The surface water treatment plant

 

The invention relates to the protection of waters, in particular to the prevention of pollution of water bodies discharged to surface stormwater discharges. The technical result is to increase the efficiency of cleaning of surface drains at drains into water bodies with the aim of environmental protection. The treatment plant surface water include rainwater collector connected to the receiving and distribution chamber, the primary node processing water from coarse particles and oil products and the node purification filters based on filter loading with pipelines of water supply for cleaning and discharge of treated water and washing system filter loading. The site of the primary water treatment contains consistently located the thickener, at least one cyclone, separator and is connected to the node purification buffer capacity, equipped with water wash the precipitate in the form of a perforated pipe, which is the drain pipe of the separator and placed on the perimeter of the bottom of the buffer capacity. Node purification further comprises a multicyclone, mounted in front of the filters representing the three serially arranged tanks with filter downloads gravel-sand, Zoloto, collecting the solution after washing the filter loading, filter and pump. The station further includes a system for removing condensed phase, presents a suction filter that communicates with the thickener and having a device for discharging dewatered sludge. 4 C.p. f-crystals, 1 Il.

The invention relates to the protection of waters, in particular to the prevention of pollution of water bodies discharged to surface stormwater discharges.

Famous wastewater treatment plant (RF patent 2094395, MKI 02 F 9/00, priority 16.07.96 year), including settling chamber, aeration, recirculation system active sludge removal system treated water and sludge sediment. The disadvantage of the design is that it does not allow to achieve the necessary degree of effluent for discharge into water bodies.

The closest technical solution to offer to the technical essence and the achieved result is the sewage runoff (USSR author's certificate 1390320, MKI E 03 F 5/10, priority 30.01.86 year ), including rainwater collector connected to the receiving and distribution chamber, the primary node processing water from coarse particles and oil products and the node purification of the Noi water, system flushing filter loading. However, the proposed treatment system rainwater does not provide the required quality of effluent water for the discharge of such water into the water body.

An object of the invention is to increase the efficiency of cleaning of surface drains at drains into water bodies with the aim of environmental protection.

The technical problem is solved due to the fact that the treatment plant surface water, including rainwater collector connected to the receiving and distribution chamber, the primary node processing water from coarse particles and oil products and the node purification filters based on filter loading with pipelines of water supply for cleaning and discharge of treated water, the washing system of filtering media, the site of the primary water treatment contains consistently located the thickener, at least one cyclone, separator and is connected to the node purification buffer capacity, equipped with water wash the precipitate in the form of a perforated pipe, which is the drain pipe of the separator and placed on the perimeter of the bottom of the buffer capacity, the node purification further comprises a multicyclone, setup and gravel-sand, zeolite, shungite, respectively, the filter washing system load is supplied by the capacity of the leaching solution, capacity, collecting the solution after washing the filter loading, the filter and the pump, the station further includes a system for removing condensed phase, presents a suction filter that communicates with the thickener and having a device for discharging dewatered sludge. Moreover, the capacity of the filter loading gravel-sand layer has the type of load: three gravel - sublayer, discharge, surface layers of thickness 200 mm and two of sand layer thickness of 400 mm In the washing system filter loading use a texturized precipitator. In the removal of condensed phase included bioreactor for treatment of dewatered sludge. As the leaching solution using a salt solution.

The drawing shows a schematic diagram of the treatment plant runoff.

Station cleaning runoff contains rainwater collector 1, the receiving and distribution chamber 2, the host for the primary treatment of water from the coarse particles and oil products containing sequentially spaced thickener 3, at least one hydrocyclone 4, Sep'a is it 9, shungite 10, respectively, the capacity of the treated wastewater 11, the supply pipe drains for cleaning and discharge of treated water 12. Removal system condensed phase presents suction filter 13 having a device (pump) 19 for discharging dewatered sludge for processing which the system includes a bioreactor 14, suitable for suction filter slurry nozzles 15. The washing system of filtering media consists of the capacity of the leaching solution 16, capacitance, collecting the solution after washing the filter loading 17, texturized precipitator 18, pump 20 for supplying washing solution to the washing of filters, tubing solution after washing the filter load 21. Filtrate discharge from the suction filter is performed in the pipeline 22.

The treatment plant surface water works in the following way. Surface storm runoff from the catchment areas flowing from the surface by rainwater collector 1, are received in receiving and distribution chamber 2, where the capture of litter on litter retaining lattices, hence surface runoff through the pipeline 12 passes sequentially through all stages of purification, first enters the site of the primary water treatment, in which first served the flow in fertile and drain into the slurry Cup, from the slurry nozzle 15 is sent to the suction filter for dewatering.

The use of vertical thickener in the schema provides the use instead of gravity sedimentation, centrifugal, creating conditions for coalescence fine sediment, emptying directly after termination revenues storm water and receiving subsequent in case of re-shower. The last stage of cleaning water from the vertical thickener 3 pump through the pipeline 12 is served in the hydrocyclone 4, where the separation from storm water sand and mineral particles with a diameter of up to 0.02 mm Clarified water through the pipeline 12 further under residual pressure enters the separator 5, where the separated coarse - and fine (drip) oil products and suspended fine particles up to 0,005 mm Captured petroleum products are unloaded in a special container.

The effluent (treated water) after the separator 5 is sent to the second stage of purification, site cleanup via buffer tank 6, which is designed for accumulation of the pre-treated wastewater and alignment hydrodynamic loads. Buffer tank 6 is equipped with a water wash system in the form of preparerow the tank 6 is caused, when full automation of the cleaning process it is necessary to stabilise the hydrodynamic regime to facilitate cleaning on the cyclones 7 and filters 8-9, creates an additional opportunity for cleaning already clarified water via gravity sedimentation, held in the buffer tank 6. From the buffer tank 6 purified water is fed into the node purification on multicyclone 7, where the stream is purged from the fine sediment that provides the gravel-sand filter 8, which further flows in a long time without regeneration of the filter load. Gravel-gravel filter 8 has a layered type of load: three gravel - sublayer, unloading and covering layers with a thickness of 200 mm and two sand layer 400 mm. the best way to load adopted for reducing the hydrodynamic resistance. Water flow to the filter serves on the bottom. On top goes the flow of wastewater, finally cleared of suspended solids and oil products, which is then sent to the second stage filter filter filter loaded zeolite 9, having a mesoporous structure. Here is the wastewater treatment on ion level from the fine gel-like substances the AET enhanced selectivity towards carbon-containing ions, has bactericidal properties. In this filter make deep ion purification of wastewater from soluble contaminants. Clean water after filtering in filter 10 under residual pressure going into the fresh water tank 11, where the overflow goes into the overflow discharge well and then enters the city collector drain. Provided by the water from the fresh water tank 11 to the washing of the filter downloads. Thickened sludge from the hydrocyclone 4, separator 5, multicyclone 7 through the slurry nozzle 15 is supplied to the working surface of the suction filter 13, where it is dehydrated and with devices for unloading 19 is fed to biological degradation in bioreactor 14 and the filtrate through the pipeline 22 is fed to the head of the process, the thickener 3. Washing system for filtering provided in the installation to restore the properties of the load as pollution.

The prepared salt solution from tank leaching solution 16 is supplied on top of the filters 8, 9, 10, passing through the load which is enriched accumulated here pollutants from washing sinks, and pipeline 21 is fed into the container 17, collecting the solution after washing the filters 8, 9, 10. The pipeline solution p will occupait again to clean it. The system includes a texturized precipitator 18 for processing solution from the container 17, before she served in the capacity of wash water 16, where use of water for washing the filter media. Rinsing the filter media passes through a closed system.

The proposed station provides the necessary effect of cleaning runoff when entering them into the water. The content of pollutants: suspended solids - 1,2-3 mg/l, oil - 0.05 mg/L.

Claims

1. The treatment plant surface water, including rainwater collector connected to the receiving and distribution chamber, the primary node processing water from coarse particles and oil products and the node purification filters based on filter loading with pipelines of water supply for cleaning and discharge of treated water system flushing filter loading, characterized in that the node of the primary water treatment contains consistently located the thickener, at least one cyclone, separator and is connected to the node purification buffer capacity, equipped with water wash the precipitate in the form of a perforated pipe, which is the drain pipe separadores before filters representing the three serially arranged tanks with filter downloads gravel-sand, zeolite, shungite, respectively, the filter washing system load is supplied by the capacity of the leaching solution, capacity, collecting the solution after washing the filter loading, the filter and the pump, the station further includes a system for removing condensed phase, presents a suction filter that communicates with the thickener and having a device for discharging dewatered sludge.

2. Station p. 1, characterized in that capacity with filter loading gravel-sand layer has the type of load: three gravel - sublayer, discharge, surface layer thickness of 200 mm and two of sand layer thickness 400 mm

3. Station according to any one of p. 1 or 2, characterized in that the washing system filter loading use a texturized precipitator.

4. Station according to any one of paragraphs.1-3, characterized in that the removal of condensed phase included bioreactor for treatment of dewatered sludge.

5. Station according to any one of paragraphs.1-4, characterized in that the leaching solution using a salt solution.

 

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