RU117146U1 - COMPLETE BLOCK OF A CLEANING STATION OF A CLOSED TYPE WITH AN AVERAGING WASTE WASTE - Google Patents

Abstract

 1. A complete unit of a closed sewage treatment plant with averaging of wastewater costs, including biological wastewater treatment tanks by communities of microorganisms attached to a fiber brush nozzle and consisting of free-floating activated sludge, devices, dewatering sewage sludge, communication systems and equipment for supplying and drainage of sewage, air supply, drainage of dehydrated sludge and silt water, equipped with thin-layer sludge separators, blowers, fans, exhaust humid air exhausted in bioreactors and in contact with waste and sewage sludge outside the block buildings through cleaning and disinfecting devices, characterized in that it is made of two compartments, the first of which contains devices and communications for mechanical wastewater treatment, including wastewater averaging tanks, fans and devices for removal, cleaning and disinfection of foul smelling air, devices for dewatering and disinfecting wastes and sewage sludge, A torus, round in plan, arranged bioreactors-nitrifiers, thin-layer sludge separators, blowers and communications for the distribution of wastewater, air, free-flowing activated sludge into sections of the block. ! 2. The complete unit of the treatment plant according to claim 1, characterized in that the averagers of the first compartment of the unit are combined with denitrifier sections and equipped with mechanical stirrers for mixing the incoming to the complete unit after the mechanical treatment of the initial wastewater with free-flowing circulating flows

Description

The utility model relates to devices for the biological treatment of urban and industrial wastewater and can be used in cramped building conditions with limited possibilities of allocating a sanitary protection zone for a treatment plant.

It is known to use sewage treatment plants of a closed type with zero emission of waste into the environment [1]. The disadvantages of the known design include: the need for complex treatment of a large amount of emissions into the air basin, the instability of the costs and composition of wastewater entering the biological treatment, the difficulty of dispensing reagents for the purification of wastewater from nutrients. The objective of the utility model is to ensure the stability of the treatment bioreactors and wastewater treatment plants, reduce emissions into the air basin that require complex and expensive treatment, and simplify the operation of the treatment plant.

The problem is solved in that the complete unit of a sewage treatment plant of a closed type. including reservoirs for biological wastewater treatment by microorganism communities attached to a fiber brush nozzle and as part of free-floating activated sludge, devices for dewatering sewage sludge, communication systems and equipment for supplying and discharging wastewater, air inlet, drainage of dehydrated sludge and silt water, equipped with thin-layer sludge separators, fans, venting moist air, exhausted in bioreactors and in contact with waste and sewage sludge outside the building of the th block through cleaning and disinfecting devices is made up of two compartments, in the first of which there are devices and communications for mechanical treatment of wastewater, including tanks for average flow of wastewater, fans and devices for the removal, purification and disinfection of foul smelling air of a limited amount, devices for dehydration and disinfection of garbage from equipment for mechanical treatment of wastewater and sludge in the form of excess activated sludge, and in the second, round in plan, arranged a erobic bioreactors nitrification. thin-layer sludge separators, blowers, communications for the distribution of wastewater, air, free-floating activated sludge, exhaust air fans only for disinfection.

At the same time, the average cost of wastewater flow in the first compartment of the unit is simultaneously endowed with devices for mixing incoming to the complete unit after the mechanical treatment of the original wastewater with flows of circulating free-floating activated sludge from thin-layer sludge separators of the second compartment of the unit to act as a denitrifier, as well as submersible pumps to ensure uniform flow silt mixture in the section of aerobic bioreactors-nitrification to the second compartment of the block.

The design of the complete unit of a sewage treatment plant of a closed type with averaging of wastewater costs is illustrated in FIGS. 1, 2, 3 and 4, where FIG. 1 shows a flow diagram of the processes of wastewater treatment, treatment of waste and sludge, removal, purification and disinfection of air during discharge it to the outside of the complete unit of the treatment plant, Figure 2 shows the plan of the complete unit in the form of two compartments at zero, Figure 3 shows the plan of the complete unit in the form of two compartments at a mark below zero, in Figure 4, the vertical ny section 1 and 11 separation unit for cleaning the tanks.

The inventive utility model of the complete unit of a sewage treatment plant includes the following elements:

I. The first compartment of the complete unit of the treatment plant.

II. The second compartment of the complete unit of the treatment plant.

The designations in the drawings are as follows:

1. The combined installation of filtering.

Garbage collection bin.

Sand receiving bin.

2. The distribution chamber.

Perforated distribution chamber agitation system.

Electroshiber damper.

3. Denitrifier.

Submersible propeller stirrer.

4. Aerotank-nitrification of the first stage. four'. Aerotank nitrification of the second stage.

Fine bubble aeration system.

5. Thin-layer desilter.

Submersible pump for recirculation and removal of excess activated sludge.

6. Ruff-anthracite filter (EAF).

EAF aeration system.

Ershov loading EAF.

EAF Anthracite Loading.

EAF drainage loading.

EAF electronic shutter damper.

7. The capacity for collecting filter wash water.

Rinse water pump.

Wastewater tank agitation system.

8. The filtrate discharge pump.

9. Installation of UV disinfection.

10. The reservoir of clean water (RFV).

Submersible filter flushing pump

Perforated Disturbance System (RFV).

11. Blowers of the main technological processes.

12. The fan of removal of the moist exhaust air in bioreactors.

13. Desilter.

Sludge evacuation pump.

14. The intermediate tank.

15. Screw pump for sludge dewatering.

16. The centrifuge. Bunker.

17. A complex of preparation and dosing of a coagulant solution.

18. The complex of preparation and dosing of flocculant solution.

19. The complex of dosing a solution of sodium hypochlorite.

20. BOD measurement station5.

21. Turbidity measuring station.

22. Nitrogen measuring station.

23. Station measuring phosphorus.

24. A unit for cleaning and disinfecting air discharged outside the first compartment of the block building.

25. The cylindrical wall of the block.

26. Submersible pumps of denitrifier averagers 3.

27. The site of air disinfection in the compartment 11 of the block.

K1N - Pipeline for the supply of wastewater for mechanical treatment.

K1.1. - Pipeline node mechanical wastewater treatment.

K1.2. - Pipeline for treated wastewater.

K1.3.N - Pipeline for treated and disinfected wastewater.

K1.4.N - Water supply pipe for washing filters.

K5.1.N - Pipeline recirculation of activated sludge.

K5.2.N - Pipeline for excess activated sludge.

K5.3.N - Pipeline for supplying compacted activated sludge to the intermediate tank.

K18H - Pipeline for removal of superficial water into the receiving chamber.

K19N - Pipeline for supplying compacted activated sludge to a centrifuge.

K20 - Pipeline drainage centrate in the receiving chamber.

G1 - Air Duct.

P1 - Coagulant solution supply pipe.

P2 - Flocculant solution supply pipeline.

P3 - Sodium hypochlorite solution supply pipe.

B1 - Water supply.

The complete unit of a closed sewage treatment plant is located in two departments I and II. The first compartment I is made in a rectangular shape, and the second II inside a cylindrical body with a wall (25). Inside the first compartment of the I block there is a mechanical cleaning unit with a combined installation (item 1) of filtering, including a hopper (1.1) for receiving waste and a hopper (1.2) for receiving sand. Next, the wastewater flows into the distribution chamber (pos. 2), equipped with a perforated system (pos. 2.1) of water agitation and an electric shutter damper (2.2) and flows through pipelines (K1.1) to the biological denitrification averaging unit, which includes 4 pcs. averager-denitrification tanks (item 3), and then by submersible pumps 26, the sludge mixture is pumped from compartment 1 to 8 nitrification tank aeration tanks (item 4) with built-in thin-layer sludge separators (item 5) of department 11. In denitrifiers (3) mass transfer immersion propeller mixers (pos. 3.1) are carried out, and in aeration tanks, a fine-bubble aeration system (pos. 4.1), communicated by air ducts (pos. G1) with blowers (pos. 11). From thin-layer sludge separators (5), clarified wastewater through pipelines (K1.2) to raff-anthracite filters (pos. 6), equipped with an aeration system (pos. 6.1), ruff loading (pos. 6.2), anthracite loading (pos. 6.3), drainage charge (pos.6.4) and electro-shutter damper (pos.6.5), capacity 7 for filter wash water collection, pump (7.1) for wash water discharge, and system for stirring the tank (7) for wash water. a pump (pos. 8) of the filter outlet through the pipeline (K1.2N) for disinfection, a pipeline (pos. K1.4N) for supplying water from the clean water tank (pos. 10) with an submersible pump (10.1) for washing the filters. In coarse filters (pos. 6), a coagulant solution is supplied through the pipeline (P1) from the complex (pos. 17) for preparing and dosing the coagulant solution.

From the thin-layer sludge separator (pos. 5), the submersible pump (pos. 5.1) provides for the return of activated sludge through the pipeline (pos. 5.1H) to the denitrifier averager (pos. 3), and excess activated sludge to the sludge collector through the pipeline (K5.2N) (item 13). From the sludge compactor (pos. 13) by means of a pump (pos. 13.1), the sediment is pumped into the intermediate tank (pos. 14) through the pipeline (pos. K5.3N), and the pressurized water through the pipeline (pos. K18N) is returned to the receiving chamber of the mechanical unit sewage treatment unit I. From the intermediate tank (key 14) through the pipeline (K19H), the activated sludge sealed with a screw pump (key 15) is sent to the centrifuge for dewatering (key 16). At the same time, a flocculant solution from the complex (pos. 18) for preparing and dosing the flocculant solution is provided through the pipeline (pos. P2) to the intermediate tank (pos. 14). From the centrifuge (pos. 16), the cake is discharged into the hopper (pos. 16.1), the centrifuge no piping (pos. K20) is discharged into the denitrifier averager 3. The clarified water from the ruff-anthracite filters 6 is discharged into the receiving chamber for disinfection of purified water at the installation ( pos. 9) UV disinfection, where the effluent enters through the pipeline (pos. K1.2N), and the cleaned and disinfected effluent is discharged through the pipeline (pos. K1.3N) into the reservoir (pos. 10) of clean water. Periodically, the sodium hypochlorite solution prepared in the complex (pos. 19) for the preparation and dosing of the sodium hypochlorite solution is dosed through the pipeline (P3) into the tank (item 10). The complete unit of the sewage treatment plant is equipped with a laboratory for water quality control, which provides for the supply of clean water through the water supply (B1). In addition, automatic monitoring of stations (pos. 20) for measuring BOD5, station (21) for measuring turbidity, station (22) for measuring the content of nitrogen in purified water, and station (23) for measuring the content of phosphorus in water is provided. In the complete unit of a closed sewage treatment plant in compartment I, a unit (24) for cleaning and disinfecting the air discharged by fans (12) outside the building of unit I of the unit is installed. In compartment II, a disinfection unit 27 is provided for air discharged by fans 12 outside the building of compartment II of the unit.

Figure 1 presents the technological scheme of wastewater treatment and sludge dewatering. Figure 2 shows the plan of I and II branch offices at zero level. Figure 3 shows the plan of the I and II departments of the unit at the level of 8.0 m. Figure 4 shows a section of the unit for wastewater treatment tanks.

A complete unit of a closed sewage treatment plant is operating with averaging of wastewater costs as follows. Wastewater, having passed the mechanical treatment units with a combined installation (item 1) of straining, is divided into 2 streams. Garbage goes to the garbage collection bin (1.1), and sand goes to the sand reception bin (1.2). The filtered wastewater enters the chamber (item 2), equipped with an agitation system (item 2.1) and an electric shutter damper (item 2.2), and then through pipelines (K1.1) to the averaging and biological denitrification unit, which includes 4 pcs. denitrification averager tanks (3) the mass transfer is carried out by submersible propeller mixers (item 3.1) to reduce the estimated wastewater flow rate to the hourly average with uneven coefficients of wastewater inflow of plants with a productivity of 5 to 50 thousand m3 / day at a level of 1.5 ... 1.8 the volume of the averaging tank should be at least 0.2 Qsut [2], ie for a station of 50 thousand m3 / day, the volume of the averager should be equal to 10,000 m3. With an average hourly flow rate of 2,000 m3 / h and 200% recirculation of return activated sludge, the denitrifier volume per hour residence time should be equal to 6000 m3. If the calculated flow rate, taking into account the non-uniformity coefficient Kotch = 1.5, is 3000 m3 / h, then the recirculation flow rate should be 6000 m3 / h and the total flow to the denitrifier will be 9000 m3 / h, which approaches the volume of the flow averager. Moreover, in the cost averager there should be an unempty volume for the operation of the mixers [3]. The mixers for such a volume of tanks have a height dimension of about 2 m; therefore, the averager volume of 0.2 Qsut just ensures the operation of the mixers (item 3.1) and ensures stable denitrification. Meanwhile, a decrease in the estimated flow rate from 3000 m3 / h to 2000 m3 / h provides a significant reduction in the volumes of nitrification aeration tanks (item 4) (for a 2-hour residence time of the sludge mixture) from 18000 m3 to 12000 m3, which entails not only a decrease in the volume of the II compartment by 6000 m3 of the volume of nitrotifier aeration tanks and 6000 m3 of denitrifiers removed from there, but also a decrease in the volume of thin-layer sludge separators and wastewater treatment bioreactors. The air requirement is also reduced by almost 6000 m3 / h, as nitrification aeration tanks consume approximately 1 m3 of air per 1 m3 of volume per hour. The productivity of return activated sludge supply pumps is also reduced from 6000 m3 / h to 4000 m3 / h, which partially compensates for the energy consumption for the operation of submersible pumps (26). pumping sludge mixture from denitrification homogenizers (pos. 3) to nitrification aeration tanks (pos. 4). As a result, the introduction of the volume of an averager of wastewater costs combined with a denitrification boat into the treatment plant’s flowchart allowed both to reduce the total volume of capacitive facilities and reduce operating costs for electricity and simplify the operation of devices for dispensing reagents for post-treatment, because the wastewater flow rate in it became constant in time by the hours of the day.

The released volumes of denitrification reservoirs in the II compartment are converted into additional nitrification compartments (steps) with a corresponding increase in the treatment plant capacity or with a decrease in the overall dimensions of the II compartment of the complete unit. Mass transfer in aeration tanks is provided by the fine-bubble aeration system (item 4.1). communicated by air ducts (pos. G1) with blowers (pos. 11). Nitrified wastewater is separated from the return activated sludge in thin-layer sludge separators (item 5) and through pipelines (K 1.2) flows to ruff filters (pos. 6) equipped with an aeration system (pos. 6.1), ruff loading (pos. 6.2), by anthracite loading (pos.6.3), drainage loading (pos.6.4) and electric shutter damper (pos.6.5), and the return sludge from the pyramidal bottoms of thin-layer sludge separators (suz.5) with an immersion pump (pos.5.1) is returned through the pipeline (5.11-1 ) activated sludge to the denitrifier averager (item 3), and through the pipeline ( K5.2H) excess activated sludge is pumped to the sludge compactor (item 13). From the sludge compactor (pos. 13) by means of a pump (pos. 13.1), the sludge is pumped into the intermediate tank (pos. 14) through the pipeline (K5.31-G), and the pressurized water through the pipeline (K18N) is returned to the receiving chamber of the mechanical waste treatment compartment water I. From the intermediate tank (pos. 14), the condensed activated sludge with a screw pump (pos. 15) is fed through a pipeline (K19N) to the centrifuge for dehydration (pos. 16). At the same time, a flocculant solution from the complex (pos. 18) for preparing and dosing the flocculant solution is provided through the pipeline (pos. P2) to the intermediate tank (pos. 14). From the centrifuge (pos. 16), the cake is discharged into the hopper (pos. 16.1), and the centrate is discharged through the pipeline (K20) to the denitrifier averager (pos. 3).

The clarified water from the ruff-anthracite filters (pos. 6) is discharged into the receiving chamber of the purified water disinfection unit at the UV disinfection unit (pos. 3.9), where the effluent enters through the pipeline (K1.2N), and the purified and disinfected effluent is discharged through the pipeline (K 1.31-1) into the tank (item 10) of pure water. From time to time, a solution of sodium hypochlorite prepared in the complex (item 19) for preparing and dosing a solution of sodium hypochlorite is dosed through a pipe (P3) into the reservoir (item 10) of pure water.

To monitor the operation of the complete unit of a closed sewage treatment plant, it is equipped with a control laboratory that feeds tap water through a water supply system (B1) and automatic control (pos. 20) for measuring BPK5 (pos. 21), turbidity measurements, and a station (pos. 22) for measuring nitrogen , station (item 23) of phosphorus measurement. In unit 1, a unit (pos. 24) for cleaning and disinfecting bad smelling air convexed by a fan (pos. 12) outside the building of unit I of the unit is installed. In Division II, only disinfection of exhaust air from aerobic bioreactors is provided at the installation (key 27) with the removal of fans (key 12) of disinfected air outside the building of department II of the block; no more than 10% of gas emissions are cleaned, which significantly reduces cleaning costs air.

Information sources:

1. Patent for utility model No. 95332. Publ. 06/27/2010 Bul. Number 18. Patent holder: CJSC "Company" Ecos ".

2. Water disposal: Textbook. Voronov Yu.V. et al. - M.: INFRA-M, 2007-415 s.

3. Abmessungen fur Tauchmotorrurwerk Uniprop TR 80-1. Wilo. Email: info@wiloemu.de

Claims (2)

1. A complete unit of a closed sewage treatment plant with averaging of wastewater costs, including biological wastewater treatment tanks by communities of microorganisms attached to a fiber brush nozzle and consisting of free-floating activated sludge, devices, dewatering sewage sludge, communication systems and equipment for supplying and drainage of sewage, air supply, drainage of dehydrated sludge and sludge water, equipped with thin-layer sludge separators, blowers, fans, exhaust humid air exhausted in bioreactors and in contact with waste and sewage sludge outside the block buildings through cleaning and disinfecting devices, characterized in that it is made of two compartments, the first of which contains devices and communications for mechanical wastewater treatment, including wastewater averaging tanks, fans and devices for the removal, cleaning and decontamination of foul smelling air, devices for dewatering and disinfecting waste water and sewage sludge, A torus, round in plan, arranged bioreactors-nitrifiers, thin-layer sludge separators, blowers and communications for the distribution of wastewater, air, free-flowing activated sludge into sections of the block. 2. The complete unit of the treatment plant according to claim 1, characterized in that the averagers of the first compartment of the unit are combined with the denitrifier sections and equipped with mechanical mixers for mixing the feed to the complete unit after the mechanical treatment of the source wastewater with flows of circulating free-floating activated sludge from thin-layer sludge separators of the second unit compartments and are equipped with submersible pumps for uniform supply of sludge mixture from denitrification averagers to the nitrification section of the second section eniya block.