Sewage purification installation for cottages


FIELD: sewage purification equipment for separate cottages.

SUBSTANCE: the invention is pertaining to the devices for deep purification of household sewage of separately located detached buildings of cottages type, recreation centers, hospitals, sanatoria, and may be used for preparation of sewage for a reuse for needs of showering of plants, sinks and other needs of separately located housings. The sewage purification installation of cottages contains: a septic tank, a bioreactor with cenoses of the adnate and freely-floating microorganisms, having two rotating drums with chutes of the sludge mix interchute cross-flow, thin-layer sludge separators and underpans, and also buckets fixed on wheels of the rotating drums, a device of after-purification made in the form of a filtering tower with a grainy catalytic agent of the first kind, a tank for purified water, a decontamination device in the form of two filter towers filled with catalytic agents of the second and the third kind, containing air ducts for the second, a waste discharge pipeline and an electrified shutter controlled by a command electrical device. Chambers of the septic tank and the first stage of the bioreactor are made with a capability to average consumption of water. The technical result is a decrease of the installation power consumption, simplification of exploitation, full automation and improved quality of the purified sewage liquid.

EFFECT: the invention ensures decreased power input of the installation, simplification of its operation, full automation of the purification process and improved quality of the purified sewage liquid.

2 cl, 1 dwg

 

The invention relates to a device for deep purification of domestic sewage from individual buildings type cottages, lodges, hospitals, health centers, etc. and can be used to prepare wastewater for re-use for purposes such as watering plants, washing and other needs separate housing.

Know the use of septic tanks and subsurface filtration fields [1] for wastewater treatment stand-alone objects. Facility included in this unit are under the earth, and manage their work, the quality of the purified water is impossible, especially under conditions of frequent precipitation, flat terrain.

Know the use of rotating biobarabanami for biological purification of small quantities of wastewater [2]. However, due to the tightening of regulations on the content in the effluent directed to surface waters, nutrients, dissolved organic impurities and suspended solids, picking sewage treatment plants for detached type cottages one biobrane not enough.

Closest to the technical essence and the achieved effect is the installation for the biological treatment of domestic wastewater [3], including septic tank-septic tank, a device for biological treatment of WWS is corruptible sewage aerated loading of the aeration tank with attached microorganisms and secondary clarifier with airlift-type device for discharge of the sludge in the septic tank-septic tank, trickling biofilter loading a specific gravity of 0.8 to 0.95 g/m3catchment device, combined with the camera submersible pump, and a device for disinfecting water, mounted above the pump.

The disadvantages of the known devices are: instability of the air lift pump for pumping sludge in the septic tank-septic tank, salaamat annular perforated pipe that supplies the liquid waste on drip filter, incomplete disinfection of treated water with the increased removal of suspended solids from trickling biofilter, the regeneration of which is not provided, and the lamps ultraviolet irradiation are located in the zone of sedimentation of suspended solids effluent liquid.

The basis of the invention is the task of reducing energy consumption of the device, ease of operation and eliminating the need for the constant presence of operating personnel near the treatment plant due to the full automation of its work, improve the quality of treated effluents to be discharged into fisheries waters or on the ground Sukhodolov.

Solved the task execution aerated download Aero mobile, in the form of a rotating biobarabanami, provided on the outer generatrix of wheel buckets, aeration consists of two sequentially included in the testing operation, compartments, with their biobrane and scoops, each compartment is equipped with a thin layer of hydrocarbon gas detection and overflow pipes return sludge mixture in the compartment, the supply of waste liquid for the next step of purification and removal of excess activated sludge in the septic tank-a tank for purification and disinfection of cleaned fluid installation is equipped with three, consistently reported spill trays, compartments, equipped with three types of granular catalytic filter loading, the first of which consists of a catalyst Catan-III, granules of organic complexes of metals of variable valency, introduced in the mass of the polymer carrier (high density polyethylene) size grains 10...15 mm layer in the Bay of 1.0 m, and the second consists of a catalyst AK-1, granules of cylindrical shape brown color, which includes the following components: pyrite cinder, copper oxide (II), zinc oxide, calcium oxide, potassium hydroxide, petroleum coke, glass, clay, made with a layer of 900 mm and the third consisting of granules of catalyst AK-plate size grains 3...5 mm, consisting of catalyst components AK with the addition of silver oxide, made with a layer of 800 mm

Given the lack of polluting units and energy consumption for disinfection, as well as more specific biocenosis the steps clear and wastewater, catalytic download compartments purification of waste water, provided the task of increasing the level of treatment, reduce energy costs and increase reliability.

Conducted patent research has shown that neither the patent nor in the scientific literature there is no information about treatment plants with this set of distinctive features of the supply, performance, arrangement, design features of the installation, which is shown in the claims, allows us to state that the proposed installation meets the conditions of patentability ovelty.

Comparative analysis of the devices used in the known technical solutions, including the prototype, shows the significance of the distinctive features of the proposed solution. The advantages which are achieved by the new design of the installation, suggests that problems which made on inventive step, since they are set and performance is not obviously derived from the well-known in the art solutions and therefore meet the criteria of patentability inventiveness.

The proposed installation is illustrated by a drawing.

The treatment plant includes: trash basket 1, two - or three-chamber septic-tank 2, tank 3 from biobar what'am 5, equipped with 4 scoops, water trays 6 and the thin-film hydrocyclone GZ 7. The hydrocarbon gas detection 7 the second stage biobarabanami 5 reported pipe 8 with electrified locking valve 13 controlled by the controller with septic tank-septic tank 2. From hydrocarbon gas detection 7 the second stage biobarabanami 5 clarified water enters the filtration column 10, filled with a catalyst of the first kind, in its upper part. After the catalyst, the effluent flows into the column 11 with the catalyst of the second kind, continuously aerated by air from the duct 14, and then the flow goes to column 12, filled with a catalyst of the third kind and blown by air from the duct 14, after which is discharged through the pipe 16 into the nearest surface watercourse. Column 10 once a day, washed with purified water stored in the tank 15 clean water filled with air from the column 12. Wash water is pumped from the tank 15 through the pipe 9, provided with a shut-off valve 13 controlled by the controller.

The proposed sewage treatment plant works as follows: wastewater from the cottages in the yard sewer network comes in observation wells in the trash basket 1, which are exempt from large, insoluble in water and waste. Then through the flooded enter the runoff enters first it is a measure of the septic tank 2, where stand out from the wastewater suspended solids and floating impurities. Floating impurities formed on the surface of a layer of fat, the locking entering water from atmospheric air oxygen. In the chambers of the septic tank 2 flow anaerobic biological processes, ensured the destruction of synthetic surfactants (detergents). From the septic tank 2 drain by gravity flows into the tank 3 with biobrane 5. In the tank of the tank 3 has two bobaraba 5, separated from each other by a solid wall. Each biobrane 5 on the outer generatrix fixed buckets 4, raising the liquid waste from a sump bobaraba 5 in the drain tray 6 and later in the thin-layer hydrocarbon gas detection 7. In the first biobrane the water level is variable, and the second constant. From the sump of the hydrocarbon gas detection 7 the second stage of bobaraba 5 provide a discharge of the sludge mixture in the first chamber of the septic tank 2 through electric valves 13 through the pipeline 8. The water level in the chambers of the septic tank 2 and the pallet first bobaraba 5 can be changed by an amount which allows the second step biobarabanami 5 to apply a constant flow average flow. The flow rate is adjusted by tilting the ladle to the horizontal plane. From hydrocarbon gas detection 7 the second stage biobarabanami 5 osvetleni the runoff flows by gravity into the column 10 quick filter filtering runoff from the top down through the granular catalyst stamps of the first kind. The filtrate is given in column 11 with another catalyst. And as silting of the catalyst of the first type in the column 10 is washed with purified water in the pipe 9 with a stop valve 13 from the reservoir 15 pure water from the bottom up, with a simultaneous supply of air from the duct 14.

Wash water pipeline flows from the column 10 in the hydrocarbon gas detection 7 and is discharged through the pipe 8 into the first chamber of the septic tank 2. From the column 11 of the processed water flows into the column 12 with the catalyst of the third kind. The catalysts and process water in columns 11 and 12 continuously barbotiruyut air from the duct 14. From the column 12 of the water by the air supplied to the tank 15, and the rest of the flow is discharged through pipe 16 through the purified water tank 17 to the nearest surface watercourse.

Supply treatment plant for wastewater cottages chamber septic tank-septic tank, not less than 2.5-day stay due to the need to ensure anaerobic decomposition of complex, hard substances, such as detergents, equalization of wastewater in time. Detached houses have the specific composition of wastewater. If the house is a large washing clothes, lingerie, then at a time into the sewer receive a lot of detergents that wash away the biofilm attached microorganism is, affect the mass transfer of oxygen into the water and greatly reduces the efficiency of wastewater treatment.

The study authors showed that septic-tank detergents dissolved within the first two days and their harmful effect on the aerobic constructions is eliminated.

The involvement of the chambers of the septic tanks and the first stage anaerobic bioreactor as equalization tank costs wastewater can reduce the depth variation of the height of the liquid level in the septic tank-septic tank, and in the first stage anaerobic bioreactor that stabilizes their work, and ultimately contributes to the achievement of our goal of improving the quality of treated water to the required level.

Supply aerobic biobarabanami with Ershova nozzle by lifting water buckets can reduce energy consumption and to simplify the process of transferring sludge mixtures, recycling of wastewater, disposal of excess biomass in anaerobic stabilisation.

Performing a disinfecting device in the form of filters with catalytic loading of the granular material eliminates the need for reagent addition, and this simplifies operation and eliminates the need for the constant presence of operating personnel, contributes to increase the degree of automation of the operation of the treatment plant.

Use in cleaning set the three types of catalysts can significantly improve the quality of effluent water, especially for nitrogen ammonium nitrogen and nitrite, the value of COD and BOD, specific organic compounds: detergents and petroleum products.

Sources of information

1. Installation for sewage treatment. The Handbook. (Edited Loskutov). - M.: Regional office problems of introduction of modern technologies of Russian Academy of natural Sciences, 2001. - P.58-59.

2. As the USSR №1271016. 4 C 02 F 3/30, 17.05.1982, the Device for biological treatment of water. Kulikov NI and other

3. Patent No. 2137720 C1. 7 C 02 F 3/06, 1999 Installation for the biological treatment of domestic wastewater. Rich I.A., I.A. Nechaev

1. Sewage treatment plant for wastewater cottages, including the septic tank, bioreactor with communities of attached and free-floating microorganisms and disinfecting device, characterized in that the chambers of the septic tank and the first stage bioreactor made with the possibility of averaging the costs of water, bioreactor contains two rotating drums with trays spill-silt mixtures, thin-layer hydrocyclone GZ pallets, and mounted on wheels spinning reels scoops, and the hydrocarbon gas detection, located after the second bobaraba connected with sbresny pipeline, equipped with electrified driven command-electric valve device, aftertreatment device is made in the form of a filter column with granular catalyst is m first view periodically flushed by the flow of purified water from the purified water tank in the reverse direction of filtration of wastewater from the overflow of her in the second hydrocarbon gas detection bobaraba through a waste pipe connected with the first chamber of the septic tank and disinfecting the device is made in the form of two filter columns filled with catalysts of the second and third containing ducts for sparging.

2. Sewage treatment plant according to claim 1, characterized in that tank effluent water made with the possibility of replenishment of washing water by means of air from the filtration column with a catalyst of the third kind, is located above the column with the catalyst of the first type and is equipped with an electrified valve associated with the command-electric device on the discharge pipeline.



 

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