Installation of biological treatment of household wastewater

 

(57) Abstract:

Usage: biological treatment of domestic wastewater in plants with low productivity. Summary of the invention in the first embodiment, the system includes a device for crushing solids, aeration tank-clarifier, an aeration device, the device settling of activated sludge. Additionally the plant is equipped with placed before aeration tank settling tank and connected in series with him and among themselves receiving tank and sump. The sump sequentially connected through the aeration tank-clarifier chamber ozonation, pneumatically associated with ozone. The receiving tank has a reverse hydraulic communication through the valve with the aeration tank-clarifier tank. In the second embodiment, the system includes a device for crushing solids, aeration tank-clarifier, an aeration device, the device settling of activated sludge and is further provided with placed before aeration tank settling tank and connected in series with him and among themselves with a capacity of reception of effluent receiving tank and sump. Receiving tank through a siphon connected with the sump, which is General, through control valve connected to the compressor. The installation also includes interconnected pneumatically camera ozonation and Luggage receive and sludge dewatering, and the first hydraulically connected to the aeration tank-clarifier and a control well. The technical result of the second invention additionally provides for the use of the installation in conditions of forced delivery of treated water from a level below the level of the host installation. 2 C. and 12 C.p. f-crystals, 7 Il.

The invention relates to installations for biological treatment of domestic wastewater with low productivity.

Known installation for domestic wastewater treatment of individual residential constructions with a population of up to 55 people [1] consisting of three series-connected wells. The first is the clarification of wastewater collection and accumulation of secreted precipitation. The second well serves as a biofilter, which support ring above the bottom of the well in recoverable boxes placed gravel and sand loading. For uniform distribution of incoming clarified effluent over the surface of the boot is centrally located above the loading of the installation assembled from prefabricated elements prefabrication.

The disadvantages of this setup is the inability to obtain stable high quality treated water with uneven inflow of waste water, the significant complexity of operations on placement and extraction of sand and gravel load, the probability of its being at high water contamination. Installation does not delete from the purified waste water biological film and removal of sediment accumulated in the first well. Installation does not provide disinfection of wastewater that were biological treatment.

Known installation of bioremediation [2] consisting of a multi-chamber settling tank, cylindrical tank, the bottom of which is placed a layer system and boot aeration and recirculation of water, and at the top is the settling zone. Before serving in the tank waste water goes through a multi-chamber settling tank. The disadvantage is the impossibility of providing high quality cleaning with significant fluctuations in the flow of incoming wastewater. In addition, the design of the installation does not contain a device for removing sediment from a multi-chamber sedimentation tank and excess activated sludge, and the installation does not obespechivali wastewater formed after flushing toilets, to re-use them [3] the Installation includes anaerobic filter layer, the contact aerator, the precipitation section for removal of suspended particles, a device for regulating the pH of the treated water with a carbon adsorption column, as well as a device for disinfecting. As a source of calcium carbonate in the device for regulating the pH is filling from oyster shells. The installation includes pumps for air supply for aeration and for pumping water. The stability of the cleaning process is ensured by adjustment of pH and organization of the circulation flow between nodes of the system. The disadvantage of this setup is the complexity of its design, and the absence of devices for removal of precipitation received. In addition, when the installation requires the use of scarce and expensive activated carbon, and the use of periodic operations for filling oyster shells.

Known biological wastewater treatment plant [4] including the aeration tank, biofilter loading and water distribution system, a secondary clarifier. During operation of the mixture of activated sludge and arabaci mixture of activated sludge and treated wastewater the plant is equipped with a submersible pump, connected to the water distribution system of the biofilter Flex and located on the floating pontoon, floating in the aeration tank. The disadvantage of this setup is the lack of devices for primary sedimentation, which reduces the quality of the purified water. Installation is also not a system for removing sludge from the secondary clarifier. In addition, the installation does not provide disinfection of treated wastewater.

Known typical biological wastewater treatment plant of small settlements capacity 12 m3/day (1.5 m3/h) KU-12, which is selected as a prototype of the claimed group of inventions. This setting is made in the form of a single unit that includes a lattice with manual cleaning or mechanized grating-crusher, aerotek-sump, equipped with mechanical aeration system, a device for settling of activated sludge and force it to return. For return activated sludge detained in the settling zone, the aeration zone through the lower slit unit is supplied through the blade lift. Excess activated sludge is periodically (1 every 1-4 months) is removed from the aeration zones in the sludge bed. The unit has nevysoko the awn ensure consistent quality cleaning fluctuations in the flow of wastewater, the necessity of manual labor when cleaning the grates from the solids, the need for recirculation of activated sludge from the settling zone of aeration, low dose of activated sludge in the aeration tank-clarifier, which leads to low oxidative capacity and significant dimensions of the aeration tank-clarifier, no device for primary sedimentation, which reduces the quality of the purified water, the need for equipment sludge drying beds for sludge formed in the process of water purification.

The claimed invention is directed to the establishment of biological treatment of domestic wastewater with a small oscillating flow from individual cottages, cottages, campsites and hotels.

The technical result of the first use of the claimed invention is to obtain consistently high quality of purified water fluctuations in the flow rate, elimination of manual labor when cleaning the grates from solid impurities, eliminating the need for recirculation of activated sludge from the settling zone of aeration tank settling tank to the aeration, providing adequate disinfection of the water and use it for irrigation (watering), no need to Alella power at an average dose of Il 5-12 g/l, the compactness of the installation and the possibility of placing her in the basement of the cottage with gravity flow water flow for cleaning. This technical result is achieved due to the fact that the selected as a prototype plant for treatment of domestic wastewater, containing a device for crushing solids, aeration tank sedimentation tank placed in it a device for the aeration and settling of activated sludge, is further provided with placed before aeration tank settling tank and connected in series with him and among themselves receiving tank, the first of which is mounted with hydraulic communication with the sump device for crushing solid inclusions, and the sump sequentially connected through the aeration tank-clarifier chamber ozonation, pneumatically associated with ozone, through control valve connected to the compressor, which, in turn, pneumatically connected through a pressure regulating valve with airlift established in the clarifier and the aeration device and interconnected pneumatically camera ozonation and Luggage receive and sludge dewatering, the first of which is hydraulically connected to the aeration tank-clarifier and Kahn with aeration tank-clarifier and the sump has a direct hydraulic connection through the control valve chamber receiving and sludge dewatering and reverse hydraulic communication through the control valves with the aeration tank-clarifier and Luggage receive and sludge dewatering. The device for crushing hard inclusions in the form of pump-crusher, and aeration tank sedimentation tank is made in the form of two hydraulically series of tanks, each of which are placed in the aeration chamber, covered with the upper and lower grids between which is placed a porous load, and above the upper grid mounted cross gear tray, and under the lower grid of the aeration device, the perimeter of each of the reservoirs in the upper part has a ring gear tray, and a ring gear tray first reservoir is hydraulically connected with a cross gear tray of the second reservoir, conical bottom of each tank, below the aeration chamber and including a device sedimentation, provided with a pipe for release of the Deposit, and the first pipe of the tank is connected through a pipeline controlled valve with the tank and the pipe of the second tank receiving reservecost outer tube covered airtight lid and is connected through the pipe and the pipe with a camera receiving and dewatering of sludge the middle pipe is hydraulically connected to the aeration tank-clarifier, the inner pipe is provided with installed in its upper part a nozzle in the form of lattices and aerator in the form of a perforated pipe placed in the bottom, and the gap between the inner and middle tubes in the upper part of the tightly overlapped by the ring that hosts notched Weir, hydraulically connected with the control well.

Luggage receipt and sludge dewatering is made in the form of a tank with a conical bottom, inside of which is equipped with a vertical partition separating the internal volume of the zone of sediment accumulation and the zone of accumulation of sludge water, each of which is hydraulically connected to the tank in the upper part of the chamber has a Central pipe, the bottom of which is placed in the zone of accumulation of sediment, and the upper part through a pipeline connected to the camera ozonation plants and areas of accumulation of sediments and pore water has its own drain pipes.

The outlet of the pipeline connecting the camera ozonation with a control well below the water level in the test well. The receiving tank and the sump Zabiela commit the top level of the sludge water and pipelines to bypass sediment from the reservoir tank into the receiving tank and the sump from the tank into the chamber receiving and dewatering of the pipeline to bypass the sludge water from the chambers for receiving and dewatering of sediments in the sump and piping for compressed air in the settling tank, aeration tank settling tank and the ozone generator is equipped with a control valve.

The technical result of the second of the claimed group of inventions is characterized as a technical result, inherent in the first of the claimed inventions in full, and more, namely, that the installation location can be held in a special building with a forced, by means of a pump, supplying water to the treatment plant. While this technical result is achieved due to the fact that well-known treatment plant domestic wastewater containing connected in series between a device for crushing solids, aeration tank sedimentation tank placed in it a device for the aeration and settling of activated sludge, further includes placed before aeration tank settling tank and connected in series with him and among themselves the capacity of replicase associated with the receiving tank, which, in turn, through a siphon connected with the sump, and the latter consistently hydraulically connected through the aeration tank-clarifier chamber ozonation, pneumatically associated with ozone, which through a control valve connected to the compressor, which, in turn, pneumatically connected through a pressure regulating valve with airlift established in the clarifier and the aeration device and interconnected pneumatically camera ozonation and Luggage receive and sludge dewatering, the first of which is hydraulically connected to the aeration tank-clarifier and a control well, moreover, the receiving tank has a reverse hydraulic communication through the valve with tank-sump, and the sump has a direct hydraulic connection through the control valve chamber receiving and sludge dewatering and reverse hydraulic communication through the control valves with the aeration tank-clarifier and Luggage receive and sludge dewatering.

The device for crushing hard inclusions in the form of pump-crusher, and aeration tank sedimentation tank is made in the form of two hydraulically series of tanks, each of which is placed aeration is rigid mounted cross gear tray, and under the lower grid of the aeration device, the perimeter of each of the reservoirs in the upper part has a ring gear tray, and a ring gear tray first reservoir is hydraulically connected with a cross gear tray of the second reservoir, conical bottom of each tank, located under the aeration chamber and including a device sedimentation, provided with a pipe for release of the Deposit, and the first pipe of the tank is connected through a pipeline controlled valve with the tank and the pipe of the second tank receiving tank. Luggage ozone is made of three concentrically arranged in the casing pipe, and the upper part of the outer tube covered airtight lid and is connected through the pipe and the pipe with a camera receiving and dewatering sludge, secondary pipe is hydraulically connected to the aeration tank-clarifier, the inner pipe is provided with installed in its upper part a nozzle in the form of lattices and aerator in the form of a perforated pipe placed in the bottom, and the gap between the inner and middle tubes in the upper part of the tightly overlapped by the ring that hosts notched Weir, hydraulically related to the Kim bottom, inside which has a vertical partition dividing the internal volume into a zone of sediment accumulation and the zone of accumulation of sludge water, each of which is hydraulically connected to the tank in the upper part of the chamber has a Central pipe, the bottom of which is placed in the zone of accumulation of sediments, and the upper part through a pipeline connected to the camera ozonation plants and the zone of accumulation of sediments and pore water has its own drain pipes.

The outlet of the pipeline connecting the camera ozonation with a control well below the water level in the test well. The capacity of the receiving drains and sump equipped with sensors for fixing the upper and lower levels of waste water in the chamber receiving and dewatering of the sludge accumulation zone water set the transmitter to lock the top level of the sludge water, and pipelines to bypass from the aeration tank into the receiving tank and the sump from the tank into the chamber receiving and dewatering of the pipeline to bypass the sludge water from the chambers for receiving and dewatering of sediments in the sump and piping for compressed air in ottingen in Fig.1-6. In Fig.1 the design of the inlet tank and the sedimentation tank according to the first invention of the claimed group of Fig.2 the design of the aeration tank-clarifier aeration device and the device settling of sludge in Fig.3 the design of the camera ozonation connected to a control well of Fig.4 construction of chambers for receiving and dewatering of Fig. 5 installing treatment of domestic wastewater according to the first invention of the claimed group of Fig.6 - design foster reservoir and sump according to the second invention of the claimed group of Fig.7 installing treatment of domestic wastewater according to the second invention of the stated group.

Installation of the treatment of domestic wastewater according to the first invention of the claimed group includes receiving tank 1 (Fig.1), consisting of a body 2 with a conical bottom 3 and the cover 4. Inside the receiving tank 1 is mounted pump-crusher 5 quick and mesh basket with 6 cells 15x15 mm Receiving tank provided with inlet pipes 7 and 8, and a discharge pipe 9 and the drain pipe 10, and the level of the upper and lower layers 11 and 12, respectively.

The settling tank 13 (Fig.1) has a body oruvan Central pipe 19, with reflective shield 20. The upper part of the pipe 19 is connected hydraulically through the nozzles 21 and 9 with the receiving tank 1. On the inner perimeter of the tank 13, the upper part has a toothed ring tray 22, which is connected with the pipe 23. The tank 13 is also provided with a by-pass pipe 24 and a drain pipe 25, and the level of the upper and lower levels 26 and 27, respectively. The Central pipe 19 and the tank 13 is connected by a pipe 28 with pump-crusher 5 mounted in the receiving tank 1.

The aeration tank-clarifier (Fig. 2) consists of two hydraulically linked sequentially tanks 29 and 30, each of which has a body 31, a conical bottom 32, the cover 33 and is equipped with aeration chamber 34, closed at the top and bottom grids 35 and 36 with cells of 10 x 10 mm Inside the aeration chambers placed porous download 37 size 20x30 mm Above the upper grid 35 is installed cross gear trays 38 associated with the overflow pipe 39. Under the lower grids 36 are mounted aeration device 40 in the form of perforated pipes connected to the pipe 41. On the inner perimeter of the tanks 29 and 30 are notched trays 42, connected to the drainage pipe 43. Ver the

Luggage ozonation 47 (Fig. 3) has a housing 48, a tapered plate 49, the cover 50. Inside the housing 48 is installed vertically three concentric tubes: an outer 51, average 52 and 53 internal. The outer tube 51 is closed in its upper part sealed by a cover 54 in its upper area with a discharge pipe 55. The average pipe 52 has an overflow pipe 56. The inner pipe 53 provided in the upper part of the nozzle 57, made in the form of lattices, and in the lower part of the diffuser 58, made in the form of a perforated pipe connected with the inlet pipe 59. The gap between the inner pipe 53 and the average pipe 52 is hermetically covered by the ring 60 that hosts notched Weir 61. In the upper part of the housing 48 along its perimeter set the tray 62 with a notched Weir, which is connected through the drain pipe 63 with the control shaft 64. In the lower part of the housing 48 camera ozonation 47 is equipped with a drain pipe 65.

Baggage receiving and dewatering 66 (Fig.4) has a housing 67 with conical bottom 68 and the cover 69. Inside the chamber receiving and dewatering 66 mounted vertical overflow gear retainer 70, which divides the internal volume of the chamber into two zones: the left zone of accumulation and sludge dewatering and re receiving and dewatering 66 has a Central pipe 73, the lower part of which is placed in the zone of accumulation and sludge dewatering, and the upper part is connected with the inlet pipe 74 connected to the camera ozonation 47. Baggage receiving and dewatering 66 is also provided with a receiving pipe 75 and a drain pipe 76. In the zone of accumulation of silt mounted water sensor 77 upper water level. Baggage receiving and dewatering 66 is also equipped with a hose 78.

The above-described treatment plant domestic wastewater works as follows (Fig.5).

Wastewater pipeline 79 are received in the receiving tank 1 by gravity. When it reaches the top of the water level in the receiving tank 1 according to the signal level gauge upper level included 11 located therein a pump-crusher 5, which feeds the effluent pipeline 27 in the Central tube 19 of the tank 13 with a flow rate of 1-2 m3per hour, taking runoff from precipitation of the receiving tank 1 and grinding solids contained in sewage sludge. When the wastewater in the receiving tank 1 receives more than is removed by the pump-crusher 5, or he for some reason does not work, drains fill the receiving tank 1 and the overflow pipe 80 gravity comes lower level by the signal level of the bottom 12 of the receiving tank 1 pump-crusher 5 off.

After termination of the water in the receiving tank 1, provided that the pump-crusher 5 does not work and in the settling tank 13 has reached the upper water level, the signal level gauge upper level 26 is included in the operation of the air pump 17, which opens the valve 81 to the air supply line to the air pump 17, which is closed when it reaches the lower water level in the sump 13 by the signal transmitter of the lower level of 27.

After filling the tank 13 water starts overflowing pipeline 82 distilled water from the sump 13, first in tank 29 Aero tank. When this water enters the cross gear tray 38 of the first reservoir 29 and shimmers in the aeration chamber 34 filled with water, subjected to aeration. Coming from the tank 13, the water is mixed with the previously aerated water passes aeration chamber 34 drops down and the output changes its movement in the upward flow in the device sedimentation (conical bottom 32) get removed from the aeration chamber 34 activated sludge. Water collects gear tray 42 and the pipe 83 is supplied to the crusade gear tray 38 of the second tank 30 Aero tank, which is filled with aerated water, mixed with nano his feeding stops and the compressor 84 stops two hours after closing valve 81 on the pipeline 85 compressed air in the air pump 17, if this does not work the pump-crusher 5 in the receiving tank 1. The flow rate of air supplied to the aeration in the aeration tank-clarifier can be controlled via valves 86 and 87. Biologically purified waste water from the gear tray 42 of the second tank 30 Aero tank through the pipeline 88 enters the Central tube 52 camera ozonation 47 and moves it down. In the lower part of the Central tube 52, the water is saturated with ozone-air mixture supplied through the pipe 89 to the aerator from the ozonizer 83-fed air from a compressor 84, the air flow can be adjusted using the valve 90. Saturated with ozone-air mixture of water partially flows into the inner tube 53 and partly moves further down. Moving up the inner tube 53, the water is located in the pipe nozzle 57, designed for better dispersion and dissolution of ozone flowing through the notched Weir 61 in the outer pipe 51 and moves it down to where it is mixed with a part of the incoming water. Then ozonated water enters the gap between the outer pipe 51 and the housing 48 of the camera ozonation 47 and moves upwards. Decontaminated and diocesana water is diverted through the tray 62 with gear vodoslivnoy, the outlet pipe 91 is placed below the water level in the test well 64. An excessive amount of air remains undissolved ozone is discharged through pipe 92 from the camera ozonation 47 in the Central tube 73 chambers for receiving and dewatering 66 in the accumulation zone and sludge dewatering. The ozone reacts with the sediment and pore water and is completely removed from the air. The air released from the ozone is released into the atmosphere.

In the process of purification of waste water in the conical tank bottoms 29 and 30 Aero tank accumulates sediment, which consists mainly of excess activated sludge from the aeration zones tanks 29 and 30 Aero tank.

When it reaches the top level of the sludge water in the chamber receiving and dewatering 66 signal sensor 77 in the zone of accumulation of silt water after closing the valve 81 on the pipeline 85 supply air to the airlift 17 opens the valve 93 at the time of 1-2 minutes in the pipeline 94 silt removal of water from the chambers for receiving and dewatering of 66. After its closing the open valves 95 and 96 on the pipes 97 and 98 sediment removal from reservoirs 29 and 30 of the aeration tank at a time for 2-3 minutes. When this happens the sump 13 and the receiving tank 1, respectively.

Thus, all the sludge produced in the wastewater treatment process is collected in the conical part of the tank 13. Removal of sediment from the sedimentation tank 13 into the chamber receiving and dewatering 66 is performed by pipeline 99 under hydrostatic pressure when opening the 2-3 minutes of the valve 100 after threefold reach the upper level of the water in the sump 13 and stop pump-crusher 5. At the same time opens mounted on the compressed air valve 85 81 which closes after reaching the sump 13 of the lower water level.

After filling precipitation accumulation area and sludge dewatering chambers for receiving and dewatering 66, in case of receiving a new portion of sediment from the sump 13 is overflow of settled sludge water in the zone of accumulation of silt water through the jagged wall 70. Removing compacted and dewatered sludge from the camera, receive and sludge dewatering is carried out using a hose 78.

The compressor 84 and the power of the ozone generator 83 is at the maximum water level in the sump 13. Stop the compressor and the power supply of the ozone generator 83 is made within 2 hours after closing the x wastewater according to the second invention of the claimed group includes the capacity of the receiving wastewater 101 (Fig.6), within which the quick mesh basket 6 and the pump-crusher 5. The capacity of the receiving wastewater equipped with level gauge upper and lower layers 11 and 12, respectively.

Receiving tank 1 (Fig.6) consists of a housing 2 with a conical bottom 3 and the cover 4. Inside receiving tank mounted siphon 102 connected to the pipe 103. Receiving tank provided with inlet pipes 7 and 8, and a discharge pipe 9, the drain pipe 10.

The settling tank 13 (Fig.6) has a housing 14, a conical bottom 15 and the cover 16. Inside the sump is located airlift 17, provided with a nozzle 18. The tank 13 is equipped with Central pipe 19, having a reflective shield 20. The upper part of the pipe 19 is connected hydraulically through the pipe 21 and 9 with the receiving tank 1. On the inner perimeter of the sump 13 in its upper part has a toothed ring tray 22, which is connected with the pipe 23. The tank 13 is equipped with a by-pass pipe 24 and a drain pipe 25, and the level of the upper and lower levels 26 and 27, respectively. Inside the Central pipe 19 of the tank 13 is mounted siphon 104 connected through pipe 105 and 106 with the water trap 102.

The aeration tank-clarifier (Fig. 2) consists of two hydraulically last the van aeration chamber 34, covered top and bottom grids 35 and 36 with cells of 10 x 10 mm Inside the aeration chambers placed porous download 37 size 20x30 mm Above the upper grid 35 is installed cross gear trays 38 associated with the overflow pipe 39. Under the lower grids 36 are mounted aeration device 40 in the form of perforated pipes connected to the pipe 41. On the inner perimeter of the tanks 29 and 30 are notched trays 42, connected to the drainage pipe 43. Vertical pipe 44 is connected with the exhaust pipe 45. In the conical heads 32 are mounted drain pipe 46.

Luggage ozonation 47 (Fig. 3) has a housing 48, a tapered plate 49, the cover 50. Inside the housing 48 is installed vertically three concentric tubes: an outer 51, average 52 and 53 internal. The outer tube 51 is closed in its upper part sealed by a cover 54 in its upper area with a discharge pipe 55. The average pipe 52 has an overflow pipe 56. The inner pipe 53 provided in the upper part of the nozzle 57, made in the form of lattices, and in the lower part of the diffuser 58, made in the form of a perforated pipe connected with the inlet pipe 59. The gap between the inner pipe 53 and the average pipe 52 is hermetically covered by the ring 6 is attached overflow tray 62 with a notched Weir, is connected through the drain pipe 63 with the control shaft 64. In the lower part of the housing 48 camera ozonation 47 is equipped with a drain pipe 65.

Baggage receiving and dewatering 66 (Fig.4) has a housing 67 with conical bottom 68 and the cover 69. Inside the chamber receiving and dewatering 66 mounted vertical overflow gear retainer 70, which divides the internal volume of the chamber into two zones: the left zone of accumulation and sludge dewatering and right zone of accumulation of sludge water. Each of the zones with corresponding drain pipes 71 and 72. In the camera receiving and dewatering 66 has a Central pipe 73, the lower part of which is placed in the zone of accumulation and sludge dewatering, and the upper part is connected with the inlet pipe 74 connected to the camera ozonation 47. Baggage receiving and dewatering 66 is also provided with a receiving pipe 75 and a drain pipe 76. In the zone of accumulation of silt mounted water sensor 77 upper water level. Baggage receiving and dewatering 66 is also equipped with a hose 78.

The above-described treatment plant domestic wastewater works as follows (Fig. 7). Waste water is fed into the container receiving stockgrove 11, located in it, is included within the intake tank effluent pump 101-crusher 5, which feeds the effluent in the receiving tank 1 with a flow rate of 1-2 m3per hour, taking runoff from precipitation and grinding solids contained in sewage sludge. When filling inlet tank 1 up to and above the level of the Gulf siphon 102 discharges through a pipe 106 and the siphon 104 are served in the Central tube 19 of the sump 13. In the event that water enters the receiving tank 1 in excess of the amount of water removed by siphon 102, and fill the receiving tank 1 through the overflow pipe 8, the sewage overflow pipe 80 begin to be removed from the receiving tank 1 in the Central tube 19 of the sump 13.

After termination of the water in the tank receiving wastewater 101 and achieve lower water level by the signal level lower level 12 pump-crusher 5 stops. If the tank 13 has reached the upper water level, the signal level gauge upper level 26, the work included the air pump 17, which opens the valve 81 to the air supply line to the air pump 17, which is closed by the signal from sensor bottom level 27 when it reaches the lower water level in the sump 13. After inclusion in Rivona 104 until the collapse of the siphon.

After filling the tank 13 water supplied by a pump-crusher 5 or through a siphon 102 and 104, starts overflowing from the ring gear tray clarifier 13 distilled water in the first tank 29 aeration tank-clarifier to the aeration chamber 34 filled with aerated water.

Next, the operation of the plant for treatment of domestic wastewater on the second of the claimed invention is similar to the first installation.

1 1. Installation of the treatment of domestic wastewater containing device for adding solids, aeration tank sedimentation tank placed in it a device for the aeration and settling of activated sludge, characterized in that it further includes placed before aeration tank settling tank and connected in series with him and between the receiving tank and the sump, the first of which is mounted with hydraulic communication with the sump device for crushing solid inclusions, and the sump sequentially connected through the aeration tank-clarifier chamber ozonation, pneumatically associated with ozone, which through a control valve connected to the compressor, which, in turn, pneumatically connected through a regulating to maticevski camera ozonation and Luggage receive and sludge dewatering, the first of which is hydraulically connected to the aeration tank-clarifier and a control well, and the receiving tank has a reverse hydraulic communication through the valve with tank-sump, and the sump has a direct hydraulic connection through the control valve chamber receiving and sludge dewatering and reverse hydraulic communication through the control valves with the aeration tank-clarifier and Luggage receive and sludge dewatering.2 2. Installation under item 1, characterized in that the device for crushing hard inclusions in the form of pump-crusher. 2 3. Installation under item 1, characterized in that the aeration tank sedimentation tank is made in the form of two hydraulically series of tanks, each of which are placed in the aeration chamber, covered with the upper and lower grids between which is placed a porous load, and above the upper grid mounted cross gear tray, and under the lower grid of the aeration device, the perimeter of each of the reservoirs in the upper part has a ring gear tray, and a ring gear tray first reservoir is hydraulically connected with a cross gear tray of the second reservoir, conical bottom of each reserve is to release sediment, moreover, the pipe of the first tank is connected through a pipeline controlled valve with the tank and the pipe of the second tank receiving tank.2 4. Installation under item 1, characterized in that the camera ozone is made of three concentrically arranged in the casing pipe, and the upper part of the outer tube covered airtight lid and is connected through the pipe and the pipe with a camera receiving and dewatering sludge, secondary pipe is hydraulically connected to the aeration tank-clarifier, the inner pipe is provided with installed in its upper part a nozzle in the form of lattices and aerator in the form of a perforated pipe placed in the bottom, and the gap between the inner and middle tubes in the upper part of the geometric blocked by a ring that hosts notched Weir, hydraulically connected with a control well.2 5. Installation under item 1, characterized in that the camera is receiving and dewatering is made in the form of a tank with a conical bottom, inside of which is installed a vertical partition dividing the internal volume into a zone of sediment accumulation and the zone of accumulation of sludge water, each of which is hydraulically connected to the tank at the top of the camera ustavom pipeline connected to the camera ozonation installation moreover, zones of accumulation of sediments and pore water has its own spout.2 6. Installation under item 1, characterized in that the outlet pipe connecting the camera ozonation with a control well below the water level in the test well.2 7. Installation under item 1, characterized in that the receiving tank and the sump is equipped with sensors for fixing the upper and lower levels of waste water in the chamber receiving and dewatering of the sludge accumulation zone water set the transmitter to lock the top level of the sludge water, and pipelines to bypass sediment from aeration tanks-tanks in the receiving tank and the sump from the tank into the chamber and receive sludge dewatering and sludge water from the chambers for receiving and dewatering of sediments in the sump and piping for compressed air in the settling tank, aeration tanks-septic tanks and the ozone generator is equipped with a control valve.2 8. Installation of the treatment of domestic wastewater containing a device for crushing solids, aeration tank sedimentation tank placed in it a device for the aeration and settling of activated sludge, characterized in that it further includes placed preserver and the sump, in the first of which is mounted a device for crushing solid inclusions, hydraulically connected with the receiving tank, which, in turn, through a siphon connected with the sump, and the last serially connected through the aeration tank-clarifier chamber ozonation, pneumatically associated with ozone, which through a control valve connected to the compressor, which, in turn, pneumatically connected through a pressure regulating valve with airlift established in the clarifier and the aeration device and interconnected pneumatically camera ozonation and Luggage receive and sludge dewatering, the first of which is hydraulically connected to the aeration tank-clarifier and a control well, and the receiving tank has a reverse hydraulic communication through the valve with tank-sump, and the sump has a direct hydraulic connection through the control valve chamber receiving and sludge dewatering and reverse hydraulic communication through the control valves with the aeration tank-clarifier and Luggage receive and sludge dewatering.2 9. Installation under item 8, characterized in that the device for crushing hard inclusions in the form of pump-crusher.2 10. Set the R tanks, each of which is placed aeration chamber, covered with the upper and lower grids between which is placed a porous load, and above the upper grid mounted cross gear tray, and under the lower grid of the aeration device, the perimeter of each of the reservoirs in the upper part has a ring gear tray, and a ring gear tray first reservoir is hydraulically connected with a cross gear tray of the second reservoir, conical bottom of each tank, located below the aeration chamber and including a device sedimentation, provided with a pipe for release of the Deposit, and the first pipe of the tank is connected through a pipeline controlled valve with the tank, and the pipe of the second tank receiving tank.2 11. Installation under item 8, characterized in that the camera ozone is made of three concentrically arranged in the casing pipe, and the upper part of the outer tube covered airtight lid and is connected through the pipe and the pipe with a camera receiving and dewatering sludge, secondary pipe is hydraulically connected to the aeration tank-clarifier, the inner pipe is supplied installed in the upper part of the nozzle in the form of Edna pipes in the upper part of the tightly overlapped by the ring, hosts notched Weir, hydraulically connected with the control well.2 12. Installation under item 8, characterized in that the camera is receiving and dewatering is made in the form of a tank with a conical bottom, inside of which is installed a vertical partition dividing the internal volume into a zone of sediment accumulation and the zone of accumulation of sludge water, each of which is hydraulically connected to the tank in the upper part of the chamber has a Central pipe, the bottom of which is placed in the zone of accumulation of sediments, and the upper part through a pipeline connected to the camera ozonation plants and areas of accumulation of sediments and pore water has its own spout.2 13. Installation under item 8, characterized in that the outlet pipe connecting the camera ozonation with a control well below the water level in the test well. 2 14. Installation under item 8, wherein the collection tray drains and sump equipped with sensors for fixing the upper and lower levels of sedimentation of water, and in the chamber of the intake and dehydration of sediments in the zone of accumulation of silt water set the transmitter to lock the top level of the sludge water, and Tr is the camera receiving and sludge dewatering and sludge water from the chambers for receiving and dewatering of sediments in the sump, and pipelines to supply compressed air into the settling tank, aeration tank settling tank and the ozone generator is equipped with a control valve.

 

Same patents:

The invention relates to an apparatus with mixing devices for biological wastewater treatment, as well as to the apparatus for saturating the liquid oxygen and technical oxygen in the water

The invention relates to the biological treatment of domestic, municipal and similar in composition and amount of pollutants in industrial wastewater and can be used in households and various industries in new construction and reconstruction of existing wastewater treatment plants with airtanks

FIELD: aeration systems in sewage purification; technologies of sewage purification.

SUBSTANCE: the invention is pertaining to technologies of sewage purification and may be used for biological purification of sewage at sewage treatment plants of municipal economy. The aeration system in the aerotank includes at least two zones located over the corresponding sections of the aerotank bottom, one of the zones is a zone of nitrification, and the other is a zone of denitrification. In the zone of nitrification are located pneumatic aerators gathered in the corresponding modules and placed in a benthic part of the corresponding section of the bottom of the aeration tank. At least in each zone there is a group of aerators formed from the pneumatic aerators. The group of aerators located in the zone of nitrification is formed from the porous tubular aerators, and the group of aerators located in the zone of denitrification is formed from the perforated tubular aerators. At that within the limits of each of the mentioned groups the aerators gathered in the aerating modules and are located in the corresponding benthic parts of the aeration tank with a capability of formation in it of a broad strip of aeration. The technical result is an increase of intensity of the sewage purification with an increase of the speed of the biological purification process.

EFFECT: the invention ensures an increased intensity of the sewage purification and increased speed of the biological purification process.

3 tbl, 5 dwg

FIELD: treatment of sewage; biological cleaning of waste water in purification works.

SUBSTANCE: proposed method includes forming of at least two zones above respective sections of aerotank bottom: one zone is used for nitrification and other zone is used for de-nitrification. Aerobic conditions are created in nitrification zone and anoxide conditions are created in de-nitrification zone. Fine-bubble aeration is performed in nitrification zone with the aid of pneumatic aerators which are preliminarily located in near-bottom part of respective section of aerotank bottom. Wide band of aeration is formed in two zones of aerotank. Medium-bubble and/or coarse-bubble aeration is performed in de-nitrification zone by means of other pneumatic aerators which are preliminarily located in near-bottom part of respective section of aerotank.

EFFECT: enhanced intensity of cleaning sewage due to increased rate of biological purification.

14 cl, 5 dwg, 3 tbl

FIELD: preservation of the environment; methods of biological purification of waste waters.

SUBSTANCE: the invention is pertaining to the field of environmental control and may be used in a municipal services and different branches of industry at construction of new and renovation of the existing Waste waters disposal plants. Waste waters together with a mixture of the suspended active sludge and free-floating nozzles are fed into a bioreactor containing an anaerobic area and an aerobic area. In an aerobic area the mixture is divided into two streams. One stream is returned for mixing with the initial waste waters, and the other stream is guided into a desilter for a preclarification with production of the dense active sludge being returned in the aerobic area, and a mixture of excessive sludge and the biologically purified waste waters. Conduct a controlled feeding of the air into the bioreactor. In the anaerobic area the waste waters are forced in a circulating motion in the closed channel formed at least by one septum by mechanical or pneumatic action. The reservoir of the device is supplied with the water-feeding and water-withdrawing chutes. The desilter is supplied with a septum not reaching to the bottom the reservoir with opening and stream-guiding deflectors. The technical result of the invention is an increased degree of the waste waters purification from suspended substances, and also from organic compounds, ammonium compounds and phosphor; exclusion of conditions for increasing concentration of metabolism products.

EFFECT: the invention ensures an increased degree of the waste waters purification from suspended substances, organic compounds, ammonium compounds and phosphor, exclusion of conditions for increasing concentration of metabolism products.

13 cl, 1 tbl, 4 dwg

FIELD: purification of the urban sewage and industrial waste waters.

SUBSTANCE: the invention is pertaining to the field of purification of the urban sewage and also the waste waters of the food-processing industry and cattle-breeding complexes and is intended for removal from the urban sewage liquor and the industrial waste waters of phosphor in the form of ions PO43-. The method of removal of phosphor from the sewage liquor includes the mechanical, biological, physicochemical purification with return of the phosphor depleted compacted active sludge from the sludge concentration tank into the aerotank, with feeding into the sludge concentration tank of the sludge water enriched with the volatile fatty acids produced in the acidoficator working with the crude sediment from the primary settlers in the mode of the first stage of the anaerobic fermentation. At that the redundant active sludge released from the ions PO43- in the sludge concentration tank is added into the acidoficator. Due to injection into the acidoficator of the redundant active sludge the shortage of the organic substances is compensated at the low values of the biochemical oxygen demand of the initial sewage liquor and it ensures the necessary amount of the volatile fatty acids fed into the sludge concentration tank for realization of the dephosphatization process. The method is characterized by reduction of the operational costs of purification of the sewage and industrial waste waters from phosphor.

EFFECT: the invention ensures the necessary amount of the volatile fatty acids fed into the sludge concentration tank for realization of the dephosphatization process.

1 dwg

FIELD: biological purification of waste water.

SUBSTANCE: proposed method includes mechanical purification of waste water in first settler followed by delivery of waste water to bioactivator containing micro-flora where zones at heterogeneous content of oxygen in medium are maintained by controllable introduction of oxygen; then mixture of waste water with activated sludge is directed to secondary settler for separating the mixture into purified waste water and activated sludge which is continuously returned to the beginning of bioactivator. Sediment after first settler is recirculated to primary settler inlet for creating the hydrolysis process and heteroacetogenic process directly in primary settler. Zones of medium at heterogeneous content of oxygen are formed in secondary settler by regulating the rate of recirculation of activated sludge from secondary settler to bioactivator inlet. Zones of medium at heterogeneous content of oxygen in bioactivator are distributed horizontally.

EFFECT: reduction of volume of sediment and excessive activated sludge; low cost of maintenance of purification works; enhanced operational efficiency of purification works.

17 cl, 6 dwg, 3 tbl

FIELD: food processing industry; microbiological industry; methods of production of the biogas during fermentation of the organic substances.

SUBSTANCE: the invention is pertaining to the method to increase output of the biogas during fermentation of the organic substances due to initiating participation of the micro-organisms may be used in the microbiological industry and the food-processing industry. The method is realized in the methane-tank (2) with the system of the electrodes (1), the stirrer (3) and its lower part made in the form of the parabola (4). The system of the electrodes (1) has the different in height inter-electrode spacing intervals, that allows to realize the discharges in the form of the traveling wave due to the fact that at first one pair of the electrodes with the smaller spacing interval is actuated and then the other pair of the electrodes with the greater spacing interval is actuated. The water solution of the organic substrate is subjected to the action of the high-voltage discharge pulses by the system of the electrodes (1) ensuring the periodical step-by-step electrohydraulic treatment in the process of preparation for the anaerobic thermophilic or mesophilic fermentation. The lower part of the methane-tank made in the form of the parabola (4) ensures the directed formation of the impulse energy. The technical result of the invention is acceleration of the anaerobic process of the fermentation of the organic substances, the increased quantity of the methanogennic bacteria, the more complete splitting of the organics and the increased output of the biogas.

EFFECT: the invention ensures acceleration of the anaerobic process of the fermentation of the organic substances, the increased quantity of the methanogennic bacteria, the more complete splitting of the organics and the increased output of the biogas.

2 cl, 2 ex, 1 dwg

FIELD: treatment of domestic and industrial sewage water for aerobic biological purification process for removal of organic and mineral contaminants, may be utilized in large-scale and average-scale purification stations.

SUBSTANCE: method involves providing processes of sieving, flotation, averaging consumption and contaminant concentration before feeding of sewage water for aerobic biological purification process, with basic sewage water being preliminarily subjected to flotation separation process; directing clarified sewage water into consumption and contaminant concentration averaging device; directing flotation concentrate into anaerobic reactor for fermentation at acid fermentation stage; separating fermented flotation concentrate into liquid and solid phases using screw-type thickeners and strainers; accumulating liquid phase in specialized accumulators for mixing with sewage water fed from consumption and contamination concentration averaging device for aerobic biological purification process; discharging solid phase in container for further disposal onto landfill for solid domestic wastes.

EFFECT: simplified sewage water purification process, reduced capital and operating expenses, and decreased consumption of power.

4 cl, 1 dwg, 2 ex

FIELD: waste water treatment.

SUBSTANCE: invention relates to processes of biologically treating domestic and compositionally equivalent industrial waste waters. Process comprises consecutive holding of a consortium of microorganisms removing organic and mineral impurities from waste waters under anaerobic, anoxide, and aerobic conditions in container constructions with intensive mass exchange provided by stirrers, pumps, and air bubbling. Recycled active sludge from secondary settlers is mixed with fresh waste water stream having passed grates and sand-catchers. Resulting mixture is subjected to flotation treatment, after which flotation concentrate is held for at least half-hour in anaerobic bioreactors at continuous stirring and clarified fluid with sludge water is loaded to denitrificator along with circulating stream of sludge mix from denitrificator outlet and anaerobically treated flotation concentrate. Further, sludge mix from denitrificator is routed to nitrificator, wherein it is subjected to air bubbling. Biomass of excess active sludge augmented under aerobic conditions of nitrificator is dewatered to cake state and subjected to biocomposting under aerobic conditions in mixture with sawdust without loss of phosphorus so that phosphorus-rich biohumus is obtained.

EFFECT: reduced volume of container constructions and power consumption on removal of phosphorus from waste water and increase of phosphorus in biohumus obtained from active sludge grown on treatment plant.

1 dwg

FIELD: mechanics; chemistry.

SUBSTANCE: completely-block modular clearing station includes tanks of multistage biological sewage treatment by communities attached on a filamentary brush mounting attachment and free-floating microorganisms of active silt, desilting devices and sludge thickeners, the devices dehydrating deposits of sewage and communications for a supply and a tap of sewage, feedings of air, a tap of collecting deposits. The clearing station is executed in the form of, at least, four-storeyed building of tower type with the isolated arrangement of bioreactors. The station is supplied with air ejectors, placed on a ground floor and communicated through air intake channels with the ventilating chamber passing from top to bottom through all floors of clearing station and arranged floor-by-floor with ventilation ducts. The station also is arranged by the ventilators assigning damp air, completed in bioreactors for limits of a building of clearing station through clearing and disinfecting devices, supplied by biopunchers for processing of the dehydrated deposits of sewage, ripening and drying at the expense of warm air heated in the air ejectors.

EFFECT: lowering of specific expenditures of the electric power on unit of cleared sewage, improvement of hygienic working conditions of serving staff and abbreviation of the area of the earth assigned under clearing station.

4 dwg

FIELD: sewage treatment facilities.

SUBSTANCE: invention is related to the field of biological purification of sewage from organic compounds, nitrogen and phosphorus. To realise the method, the following hydraulically communicated stages - anaerobic, anoxic, aerobic - are performed for treatment with activated sludge with membrane separation, stage of deaeration that precedes stage of anaerobic treatment, stage of powdered activated carbon (PAC) treatment with membrane separation. Method also includes recirculation of sludge mixture from the aerobic treatment stage to stage of deaeration and recirculation of sludge mixture from anoxic stage to anaerobic stage. Purified water after serial anaerobic stage at load on activated sludge by "БПК" of 2.0-4.0 mg/g·hr and anoxic stage at load on activated sludge by nitrogen of 3.5-4.5 mg/g·hr, "БПК" of 8-13 mg/g·hr is supplied directly to the stage of aerobic treatment with membrane separation. At that load on activated sludge by nitrogen makes 0.8-1.2 mg/g-hr, by oil products - 0.5-0.7 mg/g·hr, according to synthetic surfactants - 0.16-0.22 mg/g·hr and by phenols - 0.18-0.25 mg/g·hr. At the stage of anoxic treatment 80-90% of recirculated sludge mixture is supplied from deaeration stage. Water purification with PAC is carried out at concentration of dissolved oxygen to 4.0 mg/l due to supply of compressed air and PAC concentration of 20-30 g/l at its single charging. At that load on PAC by oil products makes 0.35-0.45 mg/g·hr, by synthetic surfactants - 0.06-0.07 mg/g·hr and by phenols - 0.02-0.024 mg/g·hr.

EFFECT: method provides for increased degree of purification from nitrogen and phosphorus, wider range of removed organic compounds, process simplification and reduction of its duration.

2 tbl, 3 ex

Up!