Biological tank for treating rain and sewage mixed water
By combining biological treatment tanks to treat mixed rainwater and wastewater and cleaning the filter screen, the problem of insufficient wastewater treatment during rainy days is solved, achieving efficient purification and low-cost wastewater treatment results.
Patent Information
- Application Number
- CN202421427441.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-21
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2034-06-21
AI Technical Summary
In existing technologies, the treatment of mixed rainwater and sewage is insufficient during rainy days, resulting in overflow sewage polluting the water environment and endangering human health. In addition, the expansion cost of sewage treatment plants is high.
The system sequentially treats mixed rainwater and sewage using a biological anaerobic tank, a biological anoxic tank, and a biological aerobic tank. It combines a return pump and a sludge pump for biological denitrification and polyphosphate reduction, and uses a motor-driven gear system to clean the filter screen to prevent clogging.
It effectively removes nitrogen and phosphorus from wastewater, reduces water pollution from rainwater overflow, reduces the need for wastewater treatment plant expansion, lowers construction and operating costs, and reduces maintenance frequency and costs.
Smart Images
Figure CN223804960U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to sewage biological treatment technical field especially relates to a biological pool for processing rainwater and sewage mixture. BACKGROUND
[0002] The urban rainwater problem and the overflow pollution problem of the combined sewer system have become one of the main restricting factors for improving the water quality of some cities.
[0003] The combined sewer system is a drainage system that collects and transports various types of sewage and rainwater through a set of pipes. In the dry season, the combined sewer system mainly transports sewage. When it rains and snow melts, it also transports rainwater and snowwater. When the flow exceeds the treatment capacity of the sewage treatment facility, part of the overflow wastewater is discharged into natural water bodies such as lakes, rivers, bays, etc. However, the overflow sewage of the urban combined sewer system contains various pathogenic microorganisms, nitrogen and phosphorus nutrients, and toxic and harmful substances. If it is not effectively treated and directly discharged into the water body, it will seriously damage the water environment function and endanger human health. In view of the above problems, the technical personnel in the field propose a biological pool for processing rainwater and sewage mixture to solve the above problems. SUMMARY
[0004] In order to make up for the above shortcomings, the utility model provides a biological pool for processing rainwater and sewage mixture, aiming at improving the problem that the sewage treatment system cannot well treat rainwater and sewage mixture when the water volume increases in rainy days in the prior art, leading to the discharged sewage damaging the environment and endangering human health.
[0005] To achieve the above purpose, the utility model provides the following technical scheme: a biological pool for processing rainwater and sewage mixture, comprising a biochemical anaerobic tank, a biochemical anoxic tank is connected to the right side of the biochemical anaerobic tank through a pipeline, a biochemical aerobic tank is connected to the right side of the biochemical anoxic tank through a pipeline, a secondary settling tank is connected to the right side of the biochemical aerobic tank through a pipeline, a reflux pump is fixedly connected outside the biochemical aerobic tank, a water delivery pipe is fixedly connected to the output end of the reflux pump, a sludge pump is fixedly connected outside the secondary settling tank, a sludge delivery pipe is fixedly connected to the output end of the sludge pump, a filter screen is installed on the right side of the secondary settling tank, and a cleaning assembly is arranged above the right side of the secondary settling tank.
[0006] Further, the cleaning assembly comprises a fixed block, the fixed block is fixedly connected to the right side top of the secondary settling tank, a sliding groove is formed in the inside of the fixed block, a rack plate is fixedly connected in the inside of the sliding groove, a fixed shell is slidably connected in the inside of the sliding groove, a motor is fixedly connected to the top of the fixed shell, a gear is fixedly connected to the output end of the motor, and an installation shell is fixedly connected to the bottom of the fixed shell.
[0007] Further, the other end of the water delivery pipe is fixedly connected to the outside of the biochemical anoxic tank, and the other end of the sludge delivery pipe is fixedly connected to the outside of the biochemical anaerobic tank.
[0008] Further, the inside of the mounting shell is fixedly connected with a plurality of springs, and the other end of the plurality of springs is fixedly connected with a brush.
[0009] Further, the inside of the fixing shell is slidably connected with the outside of the rack plate, and the outside of the rack plate is meshingly connected with the outside of the gear.
[0010] Further, the outside of the brush is slidably connected with the inside of the mounting shell, and the brush is attached to the surface of the filter screen.
[0011] Further, the left side of the biochemical anaerobic tank is fixedly connected with a water inlet pipe, and the outside of the water inlet pipe is provided with a valve.
[0012] Further, the right side of the secondary sedimentation tank is fixedly connected with a drain pipe, and the outside of the drain pipe is provided with a valve.
[0013] The utility model has the advantages of the following beneficial effects:
[0014] 1. In the utility model, the biochemical anaerobic tank, the biochemical anoxic tank and the biochemical aerobic tank are used to treat the rainwater and sewage mixture in sequence, so that the bacteria in the sewage can be subjected to anaerobic, anoxic and aerobic reactions in sequence, thereby removing phosphorus in the sewage, and nitrifying and denitrifying part of the organic matter, so that the pollution of rainwater and sewage mixture or the initial rainwater to the urban water body can be effectively reduced, the sewage treatment plant does not need to be expanded, and the construction and operation cost of the sewage treatment plant is greatly reduced.
[0015] 2. In the utility model, the motor drives the gear to rotate, the fixing shell drives the mounting shell to move, the brush continuously sweeps the filter screen, the filter screen is prevented from being blocked after long-time use, the filtration effect is affected, frequent maintenance is not needed, and the maintenance cost is reduced. DRAWINGS
[0016] Figure 1 A perspective view of a biological tank for treating rainwater and sewage mixture is provided for the utility model;
[0017] Figure 2 A fixed block structure diagram of a biological tank for treating rainwater and sewage mixture is provided for the utility model;
[0018] Figure 3 A mounting shell sectional view of a biological tank for treating rainwater and sewage mixture is provided for the utility model.
[0019] LEGEND:
[0020] 1, biochemical anaerobic tank; 2, biochemical anoxic tank; 3, biochemical aerobic tank; 4, secondary sedimentation tank; 5, reflux pump; 6, sludge pump; 7, water delivery pipe; 8, sludge delivery pipe; 9, fixed block; 10, chute; 11, rack plate; 12, fixed shell; 13, motor; 14, gear; 15, mounting shell; 16, filter screen; 17, water inlet pipe; 18, drain pipe; 19, spring; 20, brush. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0022] With reference to Figure 1 and Figure 2 An embodiment provided by the utility model: a biological tank for treating rainwater and sewage mixture, comprising a biochemical anaerobic tank 1, a biochemical anoxic tank 2 connected to the right side of the biochemical anaerobic tank 1 through a pipeline, a biochemical aerobic tank 3 connected to the right side of the biochemical anoxic tank 2 through a pipeline, a secondary sedimentation tank 4 connected to the right side of the biochemical aerobic tank 3 through a pipeline, a reflux pump 5 fixedly connected to the outside of the biochemical aerobic tank 3, a water delivery pipe 7 fixedly connected to the output end of the reflux pump 5, a sludge pump 6 fixedly connected to the outside of the secondary sedimentation tank 4, a sludge delivery pipe 8 fixedly connected to the output end of the sludge pump 6, a filter screen 16 installed on the right side of the secondary sedimentation tank 4, a cleaning assembly arranged above the right side of the secondary sedimentation tank 4, the cleaning assembly being used for cleaning the filter screen 16, the other end of the water delivery pipe 7 being fixedly connected to the outside of the biochemical anoxic tank 2, and the other end of the sludge delivery pipe 8 being fixedly connected to the outside of the biochemical anaerobic tank 1.
[0023] Specifically, the biochemical anaerobic tank 1 and the biochemical anoxic tank 2 are connected by a pipeline, the biochemical anoxic tank 2 and the biochemical aerobic tank 3 are connected, and the biochemical aerobic tank 3 and the secondary sedimentation tank 4 are connected, so that the sewage can be subjected to anaerobic, anoxic and aerobic reactions in turn, thereby removing nitrogen, phosphorus and other elements in the sewage and degrading organic matter in the sewage, and effectively achieving the purification treatment operation of the sewage, wherein the sewage in the biochemical aerobic tank 3 can be extracted by the reflux pump 5, transported back to the biochemical anoxic tank 2 through the water conveying pipe 7, and provided with oxygen for the facultative anaerobic bacteria to achieve the biological denitrification operation, the sludge in the secondary sedimentation tank 4 after solid-liquid separation and sedimentation can be extracted by the sludge pump 6, transported back to the inside of the biochemical anaerobic tank 1 through the sludge conveying pipe 8, and further absorbed by the phosphorus-accumulating bacteria to effectively remove phosphorus in the sewage and ammoniate part of the organic matter, so that the biological tank can effectively reduce the pollution of the combined sewer overflow sewage in rainy days or the initial rainwater to the urban water body without the need to expand the sewage treatment plant, thereby greatly reducing the construction and operation cost of the sewage treatment plant.
[0024] With reference to Figure 2 And Figure 3 The cleaning assembly comprises a fixed block 9 fixedly connected to the right top of the secondary sedimentation tank 4, a sliding groove 10 is formed in the inside of the fixed block 9, a rack plate 11 is fixedly connected to the inside of the sliding groove 10, a fixed shell 12 is slidably connected to the inside of the sliding groove 10, a motor 13 is fixedly connected to the top of the fixed shell 12, a gear 14 is fixedly connected to the output end of the motor 13, an installation shell 15 is fixedly connected to the bottom of the fixed shell 12, a plurality of springs 19 are fixedly connected to the inside of the installation shell 15, a brush 20 is fixedly connected to the other end of the plurality of springs 19, the inside of the fixed shell 12 is slidably connected to the outside of the rack plate 11, and the outside of the rack plate 11 is meshingly connected to the outside of the gear 14.
[0025] Specifically, the fixed block 9 supports and fixes the secondary sedimentation tank 4, so that the fixed block 9 can fix the rack plate 11 in the sliding groove 10 formed in the inside, the motor 13 drives the gear 14 to rotate, and then the fixed shell 12 can slide in the sliding groove 10 in the inside of the fixed block 9, thereby driving the installation shell 15 to move, wherein the sliding groove 10 limits the movement of the fixed block 9 to keep it moving horizontally, the motor 13 can continuously reverse, thereby making the gear 14 reciprocate along the rack plate 11, and the brush 20 is driven to clean the filter screen 16, avoiding the blockage of the filter screen 16 due to long-term use, affecting the filtering effect, and reducing the maintenance cost without frequent maintenance, and the plurality of springs 19 fixedly connected to the inside of the installation shell 15 can push the brush 20 to tightly contact the surface of the filter screen 16, thereby ensuring that the moving cleaning is more clean.
[0026] Referring to Figure 1 The left side of the biochemical anaerobic tank 1 is fixedly connected with a water inlet pipe 17, a valve is installed outside the water inlet pipe 17, and the right side of the secondary sedimentation tank 4 is fixedly connected with a drain pipe 18, a valve is installed outside the drain pipe 18.
[0027] Specifically, the rainwater and sewage mixture is transported into the biological tank through the water inlet pipe 17 for treatment, and the treated sewage is discharged through the drain pipe 18, thereby reducing environmental pollution, and the valves installed outside the water inlet pipe 17 and the drain pipe 18 facilitate the control of water inlet and outlet.
[0028] Working principle: when sewage treatment is performed, the rainwater and sewage mixture is first injected into the biochemical anaerobic tank 1 through the water inlet pipe 17, so that the bacteria in the sewage perform anaerobic reaction, and then the sewage is transported to the biochemical anoxic tank 2, so that the bacteria can perform reaction, biological denitrification is achieved, and the quality of water purification is improved, then the reacted sewage is injected into the biochemical aerobic tank 3, so that the aerobic bacteria can perform reaction to degrade the organic matter in the water body, effectively remove the phosphorus in the sewage, and ammoniate part of the organic matter, then the treated sewage is discharged into the secondary sedimentation tank 4, and after a period of sedimentation, the sewage can be discharged through the drain pipe 18, and at the same time, the sewage in the biochemical aerobic tank 3 can be backflowed to the biochemical anoxic tank 2 through the start of the backflow pump 5 for secondary treatment, thereby effectively reducing the nitrogen content in the sewage, the sludge in the secondary sedimentation tank 4 can be pumped to the biochemical anaerobic tank 1 through the start of the sludge pump 6, to further remove the nitrogen and phosphorus elements in the water and improve the water quality, thereby effectively reducing the pollution of combined sewer overflow sewage or initial rainwater to urban water bodies, without the need to expand the sewage treatment plant, thereby greatly reducing the construction and operation cost of the sewage treatment plant. The impurities in the settled sewage can be filtered out when the sewage is discharged through the filter screen 16, and the fixed shell 12 can slide in the sliding groove 10 in the fixed block 9 by driving the gear 14 to rotate through the start of the motor 13, thereby driving the installation shell 15 to move and cleaning the filter screen 16 through the start of the brush 20, so as to avoid the blockage of the filter screen 16 due to long-term use, thereby affecting the filtering effect, without the need to frequently maintain the filter screen 16, thereby reducing the maintenance cost.
[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements to some technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A biological tank for treating rainwater and sewage mixture comprising a biochemical anaerobic tank (1), characterized in that: The right side of the biochemical anaerobic tank (1) is connected with a biochemical anoxic tank (2) through a pipeline, the right side of the biochemical anoxic tank (2) is connected with a biochemical aerobic tank (3) through a pipeline, the right side of the biochemical aerobic tank (3) is connected with a secondary sedimentation tank (4) through a pipeline, the outside of the biochemical aerobic tank (3) is fixedly connected with a reflux pump (5), the output end of the reflux pump (5) is fixedly connected with a water delivery pipe (7), the outside of the secondary sedimentation tank (4) is fixedly connected with a sludge pump (6), the output end of the sludge pump (6) is fixedly connected with a sludge delivery pipe (8), the right side of the secondary sedimentation tank (4) is installed with a filter screen (16), the right side of the secondary sedimentation tank (4) is provided with a cleaning assembly above, and the cleaning assembly is used for cleaning the filter screen (16). The cleaning assembly comprises a fixed block (9) fixedly connected to the right side top of the secondary sedimentation tank (4), a sliding groove (10) is formed in the inside of the fixed block (9), a rack plate (11) is fixedly connected to the inside of the sliding groove (10), a fixed shell (12) is slidably connected to the inside of the sliding groove (10), a motor (13) is fixedly connected to the top of the fixed shell (12), a gear (14) is fixedly connected to the output end of the motor (13), and an installation shell (15) is fixedly connected to the bottom of the fixed shell (12).
2. The biological cell for treating stormwater runoff according to claim 1, wherein: The other end of the water delivery pipe (7) is fixedly connected to the outside of the biochemical anoxic tank (2), and the other end of the sludge delivery pipe (8) is fixedly connected to the outside of the biochemical anaerobic tank (1).
3. The bio-pen according to claim 1, wherein: A plurality of springs (19) are fixedly connected to the inside of the installation shell (15), and the other ends of the plurality of springs (19) are fixedly connected with a brush (20).
4. The biological cell for treating stormwater runoff according to claim 1, wherein: The inside of the fixed shell (12) is slidably connected with the outside of the rack plate (11), and the outside of the rack plate (11) is meshingly connected with the outside of the gear (14).
5. The bio-pen according to claim 3, wherein: The outside of the brush (20) is slidably connected with the inside of the installation shell (15), and the brush (20) is in close contact with the surface of the filter screen (16).
6. The bio-pen according to claim 1, wherein: The left side of the biochemical anaerobic tank (1) is fixedly connected with a water inlet pipe (17), and a valve is mounted on the outside of the water inlet pipe (17).
7. The biological cell for treating stormwater runoff according to claim 1, wherein: The right side of the secondary sedimentation tank (4) is fixedly connected with a drain pipe (18), and a valve is mounted on the outside of the drain pipe (18). The left side of the biochemical anaerobic tank (1) is fixedly connected with a water inlet pipe (17), and a valve is mounted on the outside of the water inlet pipe (17). The right side of the secondary sedimentation tank (4) is fixedly connected with a drain pipe (18), and a valve is mounted on the outside of the drain pipe (18).