RU113265U1 - COMPLETE BLOCK MODULAR CLEANING STATION OF FACTORY MANUFACTURE WITH PREPARATION OF DISPOSED SEDIMENTS FOR DISPOSAL - Google Patents

Abstract

The utility model relates to devices for treating domestic and close in composition industrial wastewater, as well as landscape wastewater, and can be used in public utilities in villages, towns, tourist complexes, recreation centers, landscape drains from the territory of animal farms, industrial enterprises, drains of which there is a high content of nutrients (nitrogen and phosphorus), unacceptable for the release of treated water into fishery ponds.

The prefabricated modular sewage treatment plant with the preparation of the separated sludge for disposal includes a self-cleaning filter device, an average flow rate of wastewater, block containers for denitrification, nitrification and wastewater bioreactors equipped with frames for fixing the brush nozzle, blower, air ducts and bubblers for aeration, regeneration of the brush nozzle, aftertreatment filters with granular anthracite filling “Purolat”, devices for removal, accumulation, processing and dehydration sludge disinfection and disinfection, a device for disinfecting purified water, thin-layer countercurrent type sedimentation tanks having bubblers for regeneration of the shelf space from activated sludge deposits. The complete block modular treatment station provides for dosing from solution tanks of soda, flocculant and a reagent for binding phosphates to insoluble substances, hypochlorite obtained by electrolysis of sodium chloride, a device for dehydrating aerobically stabilized excess activated sludge in the form of a bag dryer and a thermostat for thermal disinfection and drying of dehydrated sludge, the presence of sensors for monitoring the content of oxygen dissolved in water in bioreactors-denitrifiers and shut-off valves odachu air bubblers in water aeration, block containers into complete-block prefabricated modular cleaning station at identical contour dimensions applicable 3 types, thus for aerated fermenters block mounted longest edge containers in height.

1 s.p. formulas, 4 ill.

Description

The utility model relates to devices for treating household and similar industrial wastewater in composition and can be used in municipal services in villages, towns, tourist complexes, recreation centers, landscape drains from the territories of animal farms, industrial enterprises, the drains of which contain organic substances and nutrients (nitrogen and phosphorus) in quantities that are unacceptable for the release of water into bodies of water of cultural or fishery significance.

It is known that the most effective use in practice for wastewater treatment with time-unstable flow rates and composition of wastewater from the above sewage systems of prefabricated units of modular block type [1], having a combined technology of physico-chemical, biological and chemical wastewater treatment, including filtering of the initial effluent through self-cleaning filtering devices, accumulation and averaging over time of the composition and flow of wastewater in aerated containers averaging agents, reagent wastewater treatment with coagulants and flocculants in mixers with subsequent sedimentation, anaerobic-aerobic biological treatment of clarified runoff in free-floating activated sludge nitrification bioreactors, with devices for two-stage wastewater purification, first in grain bioreactors, and then also devices for disinfecting purified water with ultraviolet rays and devices for receiving, accumulating, treating and thickening the wastes discharged from cages, their disinfection for disposal or disposal.

The disadvantages of the known treatment plant are:

- the irrational ratio of the width and height of the block containers of complete block plants, causing difficulties in their transportation on roads and the low percentage of oxygen used in the air supplied to the bioreactors by blowers;

- a large amount of allocated sewage sludge, which leads to a rise in the cost of equipment for dehydration and disinfection of the allocated sewage sludge;

- lack of a system for automated control of the process of deep wastewater treatment from nitrogen compounds;

- removal by sedimentation with pre-treatment with reagents of a portion of organic substances in suspended solids that can be used in denitrification processes and to accelerate the accumulation of biomass of anammox microorganisms in sufficient quantities to conduct an effective wastewater treatment process.

The objective of the utility model is to reduce the cost of electricity for conducting the wastewater treatment process and dewatering and disinfecting the generated wastewater sludge, controlling the biological wastewater treatment process for the efficient use of anammox microorganisms in the process of removing nitrogen compounds from wastewater.

The problem is solved due to the fact that in the known construction of a prefabricated modular treatment plant, the parallelepiped-shaped block containers for bioreactors are made with the long side in the vertical position, which doubles the height of the water layer, the nitridenitrification bioreactors are equipped with sensors for the content of dissolved in oxygen water and magnetic valves on the aeration and regeneration ducts of the brush nozzle to control the air supply according to a special program; the device for receiving, accumulating and processing the generated sewage sludge is equipped with a ruff nozzle for holding bacteria and predatory hydrobionts (ticks, worms), as well as a thin-layer counter-current settler with a bubbler system for the regeneration of the shelf space, a device for thickening and dehydrating the excess active active in the drive The sludge is made in the form of a bag dryer made of jute fabric, bags with dehydrated sludge are sent to the thermostat before being sent for disposal or disposal. electric heating at 80 ° C for incubation and disinfection, for disinfection of purified water in the treatment station there is an electrolyzer for receiving and dosing hypochlorite obtained from table salt, hypochlorite input is provided in the tray for the flow of purified water from the post-treatment bioreactor to the post-treatment granular filter, and the flocculant is introduced from the reagent An economy is provided for in the pump for supplying the initial drain to the denitrifier and to the intermediate tank after the accumulator of excess activated sludge.

All elements of the treatment plant are prefabricated and delivered to the construction site in the form of separate sections (modules) of a complete block type.

An analysis of the known technical solutions related to wastewater treatment devices in a similar combination and their mutual arrangement showed that no technical solutions containing the same set of essential features as in the claimed installation were found.

This allows us to conclude that the claimed installation meets the criterion of "novelty."

An analysis of the essential features that are distinctive from the prototype showed that such or similar features were not found in the known technical solutions with such a combination of placement and relative position, which allows us to conclude that the claimed installation meets the criterion of "significant differences".

The design of a prefabricated modular treatment plant with the preparation of precipitates for disposal is illustrated by the drawings, where in Fig. 1 the first floor of one section of bioreactor block containers. Figure 2 shows the second floor of the section of the container containers of bioreactors. Figure 3 shows the flow chart of the movement of wastewater through the treatment plant. Figure 4 shows a diagram of the mutual arrangement of sections in a prefabricated block treatment plant with the preparation of precipitates for disposal.

Designations in figure 1-4.

1. Capacitive block containers of one of the sections of a modular block treatment plant.

2. UFS.

3. Waste container with UVS.

4. Tank for preparing and dispensing soda.

5. Tank for preparation and dosing of flocculant.

6. Electric shield.

7. The room of the operator of the treatment plant.

8. Staircase.

9. The top block container for equipment placement.

10. Averager of wastewater costs.

11. Averaging pump

12. The float column in the averager 10.

13. Thin-layer sump in the accumulator (18) of excess activated sludge.

14. A pump for supplying condensed sludge from a thin-layer sump (13) to a reserve tank (42) and then to a bag dryer (45).

15. Thin-layer sedimentation tank in nitrifier (21)

16. Ruffle nozzle.

17. Frame for fixing the brush nozzle 16.

18. The accumulator of excess activated sludge.

19. Bioreactor of wastewater treatment.

20. Sparger aeration of wastewater.

21. Nitrifier.

22. Weirs.

23. The pipeline of clarified water for supplying it to the anaerobic bioreactor (26) from a thin-layer sump (13)

24. Flow divider into bioreactors (19) for wastewater treatment.

25. Pipeline for supplying biologically treated wastewater to the after-treatment to the after-treatment bioreactor (19).

26. Anaerobic denitrification bioreactor.

27. A post-treatment filter filled with granular anthracite (purolate).

28. "Purolat."

29. The cap system of pipelines for supplying washing water in the form of a water-air mixture.

30. The reservoir of clean water.

31. The blower is working.

32. Standby blower.

33. The pipeline duct.

34. A block container for accommodating a thin-layer sedimentation tank, a post-treatment bioreactor, a nitrifier and an anaerobic bioreactor.

35. Bottom flow from an anaerobic bioreactor (26) to a bioreactor (21) of nitrification of ammonium nitrogen.

36. Perforated bottom of the filter (27) aftertreatment.

37. Aeration bubblers for the regeneration of the brush nozzle (16).

38. Pipeline for supplying wastewater from the bioreactor (19) of the wastewater treatment to the filter (27) of the aftertreatment.

39. The pipeline drainage filtered water.

40. An electrolyzer for the production of hypochlorite from table salt for disinfection.

41. Block container for placement of the averager of 10 wastewater costs.

42. Intermediate capacity.

43. Thermostat.

44. Pipeline for disinfecting purified water.

45. Bag dryer

46. The pipeline communication reserve capacity 42 with a bag dryer 45.

47. The sensor of the dissolved oxygen.

48. Airlift pumping return activated sludge.

49. A pipeline communicating the pyramidal bottom of a thin-layer sump 15 by means of an airlift 48 with a storage tank (18) and a bioreactor-dinitrifier (26).

50. Valves in the duct system for barbators of aeration and regeneration under a brush nozzle (16)

51. Tank for the preparation and dosing of a reagent for binding phosphates to a water-insoluble compound.

One section of a prefabricated modular sewage treatment plant with the preparation of the separated sludge for disposal consists of 9 block containers (Figs. 1-4) with a size of Z × 2.5 × 6 m, including 5 container block containers (1) installed vertically with a base size of 3 × 2.5 m and a height of 6 m, one horizontal lower capacitive (10) with a base 2.5 × 6.0 m and 3 household items (9) for equipment placement (Figs. 1 and 2 ) Wastewater from the network sewage pumping station flows unevenly at the UFS (2) into the upper block container (9). The wastes allocated to the UFS (2) fall into the container (3), and the waste water flows into the averager (10) of the wastewater flow rate of the block container (41). From the homogenizer (10), the pump (11), placed in the float column (12), pumps the wastewater uniformly into the capacitive block container of the anaerobic denitrification bioreactor (26). A flocculant solution is dosed from the tank 5 to the pump inlet (11), and a soda solution from the tank 4. In the anaerobic denitrification bioreactor (26), frames (17) are mounted for fixing the brush nozzle (16) and an air duct system (33) for supplying air to the bubblers (20) for wastewater aeration, evenly placed on the bottom of the bioreactor (26). On air ducts (33) in the above-water part, valves (48) are installed, controlled by sensors (47) of dissolved oxygen from an electric switchboard (6). Returned activated sludge is supplied to the bioreactor-denitrifier (26) from the pyramidal bottom of the thin-layer settler (15) in the nitrificator (21) by means of an airlift (48), and clarified water from the thin-layer settler (13) of the excess reservoir (18) via a pipe (23) activated sludge. From the denitrification bioreactor (26), the sludge mixture flows through the bottom flow (35) into the nitrification bioreactor (21). The nitrifier (24) is equipped with air ducts (33), bubblers (20) for wastewater aeration, frames (17) for fixing the brush nozzle (16) and a thin-layer sump (15) for holding free-floating activated sludge. In the thin-layer sump (15) there is a shelf module and aeration bubblers (20) below it for regeneration of the shelf space from activated sludge deposits. The pyramidal bottom of the thin-layer sump (15) is communicated by a pipeline (49) through the airlift (48) with the capacity of the accumulator (18) of excess activated sludge and a bioreactor-denitrifier (26) to remove the return activated sludge. For denitrification bioreactor (26), nitrification (21), aftertreatment bioreactor (19) and aftertreatment filter (27), block containers (34) are used that have twice as much water depth as in the block container for the averager (10) or block containers (9) for placement of treatment plant equipment.

From the nitrification bioreactor (21), the clarified water, through weirs (22), a flow divider (24) and pipelines (25), flows by gravity into the bioreactors (19) of wastewater treatment through a thin-layer sump (15) built into it. Bioreactors (19) for wastewater treatment are equipped with frames (17) for fixing a brush nozzle (16) with bubblers (20) for aeration of wastewater and regeneration (37) of a brush nozzle (16) communicated through air ducts (33) through valves (50) with an air blower ( 31) backup or backup blower (32).

From the bioreactors (19) of the wastewater treatment, water flows into the filters (27) of the aftertreatment, filled with a granular charge of crushed anthracite - Purolata (28). A reagent solution from the tank (51) is dosed to flow from the bioreactor (19) to the filter (27) into the pipeline (38) to bind the waste water phosphates into a water-insoluble compound, for example, aluminum phosphate or iron phosphate, as well as a hypochlorite solution from the tank electrolyzer (40). The type of reagent is selected from the conditions of its delivery to a specific treatment plant.

The post-treatment filter (27) has a perforated bottom (36) and a cap system of pipelines (29) for supplying washing water from the clean water tank (30) and air from the air duct (33) for stirring and washing “Purolate” (28) from phosphate and suspension sediments carried out from bioreactors (19) for wastewater treatment. The filtrate from the after-treatment filter (27) is discharged through the pipeline (39) to the pure water tank (30) of the RFC, and the disinfected water is discharged by the pipeline (44) to the water inlet. The accumulator (18) of excess activated sludge is equipped with a frame (17) for fixing the brush nozzle (16), air ducts (33) and bubblers (20) for aeration of the sludge mixture. A thin-layer sump (13) is integrated inside the reservoir (18) to hold stabilized activated sludge. In the process of stabilization, the dry matter of sludge decreases, and the humidity increases.

Excess moisture through the pipeline (23) of Fig. 3 is discharged to the denitrification bioreactor (26), and the condensed stabilized activated sludge is periodically pumped by the pump (14) to the intermediate tank (42) and then to the bag dryer (45). A flocculant is dosed into the container (42) from the tank (5). After dehydration in a bag dryer (45), the bag with sludge is placed in a thermostat for keeping at a temperature of 80 ° С for the purpose of decontamination and drying of sludge before disposal for disposal as organic fertilizer or soil for reclamation of disturbed areas.

The treatment station provides a room (7) for the operator, a ladder (8) for servicing equipment and monitoring the condition of the aeration system, settling and filtering, the operation of the electrolyzer (40) and the blower (31).

A prefabricated block modular treatment plant is operating with the preparation of precipitates for disposal as follows.

The source wastewater comes from a network sewage pumping station via a pressure pipe to a self-cleaning filtering device (UFS) (2) located in the upper block container (9) for equipment placement (Figure 1-2). The waste filtered off on the UFS sieve (2) falls into the waste container (3), the waste water flows into the block containers (41) of the averager (10) of the wastewater discharge. By means of a pump (11) located in the float column (12) of the averager (10), the wastewater is uniformly pumped into the capacity of the block container (34) of the denitrifier bioreactor (26). Due to the entry into the bioreactor-denitrifier (26) of not only the flow of wastewater from the averager (10), but also the return of activated sludge through the pipeline (49) by means of airlift (48), as well as clarified water from a thin-layer sump (13) of the reservoir (18) ammonia nitrogen with initial wastewater and nitrites with nitrates, in return activated sludge and clarified superficial water (Figure 3) from a thin-layer sump (13) are introduced into the reservoir ( 18), as well as organic matter. Due to the presence of sensors (47) of dissolved oxygen and bubblers (20), connected by pipelines (33), an air duct with blowers (31) or (32) through valves (50) that can be opened or closed by an electric switchboard (6) with automation devices with a program control, in the bioreactor-denitrifier (26), on the one hand, anoxic conditions are supported, and on the other hand, the conditions of mass transfer of mixing of the treated sludge mixture. In clots of activated sludge formed by a flocculant introduced into the stock from tank 5 for preparing a flocculant solution, as well as soda, the solution of which is prepared in tank 4 in a denitrifier bioreactor, the optimum pH of the sludge mixture is maintained both for conducting the denitrification process and for development , reproduction and accumulation of microorganisms anammox. Inside the cords of the ruffled nozzle (16) of the frames (17), there are conditions for the vital activity of anammox bacteria and for the existence of methanogens.

According to the Vinogradsk Institute of Microbiology of the Russian Academy of Sciences, the contribution of anammox bacteria to the removal of nitrogen compounds can reach up to 30% of the total amount of nitrogen that needs to be removed from wastewater according to the standards for the release of purified water in denitrification bioreactors (26) with a brush nozzle (16) sewage in reservoirs of fishery value. The remaining 70% of the nitrogen removed is due to nitrogen consumption for the growth of the biomass of microorganisms and for heterotrophic denitrification.

The sludge mixture is transferred from the denitrification bioreactor (26) to the nitrification bioreactor (21) through the bottom flow (35). The continuous air supply through the bubblers (20) communicated by the air ducts (33) with the blower (31) in the block containers (34) having a water layer twice as large as in the known constructions of the block containers guarantees a twice as much percentage of the use of atmospheric oxygen, and therefore, half the need for air and energy consumption. It is known that the energy consumption for air supply in biological treatment plants amounts to 70 ... 80% of the total electricity demand during operation of treatment plants, i.e. the proposed changes in the design of block containers provide a solution to one of the problems posed in the utility model.

A smaller bottom area in block containers (34) ensures, with less air demand, a continuous coating of the bottom of the bioreactor-nitrifier (21) with bubblers (20), and this creates conditions for high aerobicity of the medium, both in the volume of the nitrifier (21) and inside Ruff nozzles (16). Two block containers (34) are involved in the nitrification process. In the second nitrificator (19) along the course of the movement of the sludge mixture, ceteris paribus, a thin-layer settler (15) is mounted, which separates the sludge mixture stream into two flow equal in size. The flow of clarified water, passing through the shelf space, is collected by the catchment channel and after the divider (24) the flow is distributed by pipelines (25) to the bioreactors (19) of wastewater treatment. The stream of double-packed activated sludge from the pyramidal bottom of a thin-layer sump (15) is pumped by means of an airlift (48) through pipelines (49) into the bioreactor-denitrifier (26) and into the accumulator (18) of excess activated sludge. The ratio of the costs of return and excess activated sludge is established during commissioning and is adjusted during operation. The clarified water entering the bioreactor (19) of purification is freed from a part of suspended solids due to their sorption on a brush nozzle (16) fixed on the frames (17), ammonium nitrites and nitrogen, as well as organic substances. What ensures bringing the quality of treated water to the level of requirements of reservoirs for cultural and domestic water use. The stability of the tertiary treatment bioreactors (19) is ensured by the presence of aeration bubblers (20) and regeneration bubblers (37), as well as the drainage of regeneration water by emptying the regenerated compartment of the tertiary treatment bioreactors (19) through a network of sewage pipes to a network pumping station. To bring the quality of purified water to the level of standards for discharge into a reservoir of fishery importance, it is necessary to bind phosphates into insoluble substances by dosing a reagent containing iron or aluminum, and filtering the purified water through a filtering granular charge that does not come into contact with phosphates to create non-washable zones. Such a load is anthracite crumb - “Purolate”. For post-treatment filters (27), block containers (34) are used. In addition to Purolat (28), in the after-treatment filters (27) there is a perforated bottom (36) and a cap system of pipelines (29) for supplying washing water from the clean water tank (30) and air from the air duct (33). Water is introduced into the filtration through a pipeline (38), and the filtrate is discharged through a pipeline (39). The wash water is discharged to the flow averager (10). The reagent from the tank (51) and hypochlorite from the electrolyzer (40), obtained by electrolysis of a solution of sodium chloride, are introduced into the pipeline (38). The disinfection of purified water in the RFA is nearing completion (30). Disinfected water from the RFC (30) is discharged through the pipeline (44) to the water intake.

Excess activated sludge discharged into the accumulator (18) containing scaffolds (17) with a ruff nozzle (16) holding the biocenosis of bacteria and predatory aquatic organisms (ticks, worms), as well as a system of bubblers (20) communicated by air ducts (33) with a blower (31), in the course of processing by the biocenosis of microorganisms and hydrobionts attached to the brush nozzle (16), it is mineralized and its dry matter is mineralized 5 ... 6 times (Figure 3). During sludge mineralization, sludge decomposition products increase the salt content of sludge water and inhibit the process; therefore, the sludge mixture of the accumulator (18) should be continuously washed. The washing water is a continuously supplied sludge mixture of excess activated sludge, which, after mixing with the processed activated sludge of the accumulator (18), enters a thin-layer sump (13) and, after separation from the sludge in the shelf space, is discharged by pipeline (23) into the bioreactor-denitrifier (26). From the pyramidal bottom of the thin-layer sedimentation tank (13) with a pump (14), the mineralized sludge is discharged into an intermediate tank (42), where a flocculant is introduced from the tank (5), and then to a bag dryer (48) through a pipeline (46). In a bag dryer (48), sludge humidity is reduced to 80% and the sediment volume is reduced by 3 times in comparison with traditional precipitation processing technology, which allows the use of bag dryers in the range of capacities of the proposed treatment plant design from 100 to 2000 m ³ / cit, and a thermostat (43) of limited size for the decontamination of dehydrated sludge directly in jute bags while adjusting the temperature of the sludge to 80 ° C without damaging the bags. This makes it possible to reuse the bags as returnable packaging, and this significantly reduces operating costs, both in electricity and in components for the installation of the processing of sludge materials, manual labor costs, which fully provides solutions to the problems posed in the utility model.

Shown in Fig.1-3, one section of a prefabricated block treatment plant with the preparation of the allocated sludge for disposal provides the performance of the treatment plant for various types and composition of wastewater in the range from 150 to 250 m ³ / day. For high throughputs, FIG. 4 shows an embodiment of blocking sections into a module of appropriate capacity.

Claims (1)

A prefabricated modular wastewater treatment plant with the preparation of precipitates for disposal, including: modular containers, a self-cleaning filter, averager, bioreactors for wastewater treatment and purification, a thin-layer sump for holding free-floating activated sludge, blowers with air ducts and waste aeration bubblers water, a unit for preparing and dosing reagents, a device for disinfecting purified water, a device for draining, accumulating, thickening, overfilling bottling, dehydration and disinfection of sludge discharged during wastewater treatment, characterized in that the devices for discharging, accumulating, thickening and processing the discharged wastewater sludge are equipped with a ruff nozzle for holding bacteria and predatory aquatic organisms, a thin-layer sump countercurrent type with a system for sparging air regeneration in the shelf space for holding a free-floating biocenosis, the device for dehydration and disinfection is equipped with bag dryers and a heat chamber, the device for The disinfection of purified water is made in the form of an electrolyzer of a solution of sodium chloride to produce sodium hypochlorite and a metering tank, the bioreactors for wastewater treatment and purification are equipped with frames for fixing the brush nozzle, sensors for monitoring the content of dissolved oxygen and magnetic valves in the ducts to control the air supply to the aeration and regeneration bubblers ruff nozzles, block containers for bioreactors mounted on the long side of the box in an upright position.