CN214192948U

CN214192948U - Municipal wastewater dephosphorization system

Info

Publication number: CN214192948U
Application number: CN202023189327.8U
Authority: CN
Inventors: 柏金标; 丁华烘; 刘尚福; 马志强
Original assignee: Zhejiang Chuangqi Environmental Protection Technology Co ltd
Current assignee: Zhejiang Chuangqi Environmental Protection Technology Co ltd
Priority date: 2020-12-25
Filing date: 2020-12-25
Publication date: 2021-09-14
Anticipated expiration: 2030-12-25

Abstract

The utility model relates to a sewage treatment technical field especially relates to and discloses a municipal administration waste water dephosphorization system, including anaerobism pond, high-efficient sedimentation tank, sludge impoundment, still include the anaerobism phosphorus release pond, high-efficient sedimentation tank and sludge impoundment communicate in proper order, and the supernatant in the anaerobism phosphorus release pond flows into high-efficient sedimentation tank, and the mud in high-efficient sedimentation tank flows into sludge impoundment, and the mud in the anaerobism phosphorus release pond flows back to the anaerobism pond with the supernatant of high-efficient sedimentation tank. The utility model discloses a municipal wastewater dephosphorization system sets up the anaerobism before high-efficient sedimentation tank and releases the phosphorus pond, can make the phosphorus fully release from the anaerobic condition, increases the dephosphorization effect of follow-up workshop section, can not only effectively control the use amount of dephosphorization medicament, also enables sewage discharge and stabilizes up to standard, has energy saving and emission reduction's advantage.

Description

Municipal wastewater dephosphorization system

Technical Field

The utility model relates to a sewage treatment technical field especially relates to a municipal wastewater dephosphorization system.

Background

The municipal wastewater dephosphorization system mostly adopts a process combining the traditional biological and chemical dephosphorization process routes, decomposes organic phosphorus into phosphorus molecules through biological dephosphorization, and removes phosphorus through a chemical precipitation method, but because the capability of decomposing the organic phosphorus by microorganisms is limited, most of the organic phosphorus can not be effectively removed through the biological dephosphorization, the pressure of subsequent chemical dephosphorization is very high, a large amount of dephosphorization agents are required to be added, and the risk of exceeding the standard of total phosphorus is high.

With the continuous improvement of the discharge standard of the sewage treatment plant, the method has the advantages of saving energy, reducing emission, reducing operation cost, reducing the shortage of reserved land and the like, and has the important targets of stable standard reaching and operation cost control of the sewage treatment plant.

If the organic phosphorus can be sufficiently removed in the biological phosphorus removal stage, the use amount of the phosphorus removal agent can be effectively controlled, the sewage discharge is stable and reaches the standard, energy conservation and emission reduction are realized, and the cost is reduced.

Disclosure of Invention

The defect that exists to prior art, the utility model provides a can fully get rid of organic phosphorus in biological dephosphorization stage, can the use amount of effective control dephosphorization medicament, make the stable municipal wastewater dephosphorization system up to standard of sewage discharge.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the municipal wastewater dephosphorization system comprises an anaerobic tank, an efficient sedimentation tank, a sludge tank and an anaerobic phosphorus release tank, wherein the anaerobic tank, the anaerobic phosphorus release tank, the efficient sedimentation tank and the sludge tank are sequentially communicated, the supernatant of the anaerobic phosphorus release tank flows into the efficient sedimentation tank, the slurry of the efficient sedimentation tank flows into the sludge tank, and the slurry of the anaerobic phosphorus release tank and the supernatant of the efficient sedimentation tank flow back to the anaerobic tank. An anaerobic phosphorus release tank is arranged in front of the high-efficiency sedimentation tank, so that phosphorus can be fully released from an anaerobic state, and the phosphorus removal effect of a subsequent working section is improved.

Preferably, the system also comprises a sludge dewatering machine room, and an inlet of the sludge dewatering machine room is connected with an outlet of the sludge pool. Sludge can be transported out as mud cakes by sludge dehydration.

Preferably, the device also comprises a dosing room which is connected with a dosing port of the high-efficiency sedimentation tank. Used for adding coagulant, flocculant and other medicaments to the high-efficiency sedimentation tank in the following.

Preferably, a water inlet tank, a phosphorus release tank main tank, a supernatant collecting tank and a sludge collecting tank are arranged in the anaerobic phosphorus release tank, the water inlet tank, the phosphorus release tank main tank are sequentially connected, a water outlet tank and a sludge collecting tank are arranged in the phosphorus release tank main tank, the water outlet tank is communicated with the supernatant collecting tank, the sludge collecting tank is communicated with a first sludge collecting tank, the supernatant collecting tank is provided with a sewage pipe connected to a water inlet of the efficient sedimentation tank, the first sludge collecting tank is provided with a sludge pipe connected to an inlet of the anaerobic phosphorus release tank, the phosphorus release tank main tank is provided with a truss-car type pump dredge, at least one lifting pump is arranged in the supernatant collecting tank, and at least one sludge pump is arranged in the first sludge collecting tank. The sludge sucked by the truss-car type sludge pumping machine is discharged to the first sludge collecting tank through the sludge collecting groove. The trussed-beam pump dredge can avoid the condition of anaerobic sludge deposition in the main tank of the phosphorus release tank, the slurry of the anaerobic phosphorus release tank flows back to the anaerobic tank for biological phosphorus removal again, and enough organic phosphorus is removed from the supernatant of the anaerobic phosphorus release tank and enters the efficient sedimentation tank for continuous chemical phosphorus removal.

Preferably, the main tank of the phosphorus release tank is divided into two parts, each part is provided with a truss vehicle type pump dredge, and the truss vehicle type pump dredge is integrated with a sludge pump. Can be used alternately or simultaneously, is convenient for maintenance and removes phosphorus with large capacity.

Preferably, a plurality of water inlet guide holes are formed in the partition wall of the water inlet pool and the water inlet tank, a plurality of water distribution round holes are formed in the bottom of the water inlet tank, and a guide plate is arranged below the water inlet tank. So that the water flow entering the main pool of the phosphorus release pool is uniformly distributed and enters a preset position.

Preferably, there are two lift pumps and two sludge pumps in the first sludge collecting tank, respectively. Convenient for maintenance and large capacity use.

As preferred, high-efficient sedimentation tank includes first dosing tank, the second dosing tank, the sedimentation tank main tank, second mud collecting pit, first dosing tank, the second dosing tank, the sedimentation tank main tank communicates in proper order, all set up the medicine mixer in two dosing tanks, set up central transmission mud scraper in the sedimentation tank main tank, central transmission mud scraper scrapes mud arm top and sets up the water catch bowl, the water catch bowl water converges into the canal, the canal goes out water has water piping connection to anaerobism pond, central transmission mud scraper below still is provided with the mud pipe, the export of mud pipe gets into second mud collecting pit, set up an at least sludge pump in the second mud collecting pit, second mud collecting pit has sludge piping connection to the mud pond. Two sections of dosing and stirring systems are arranged in the efficient sedimentation tank, so that the phosphorus removal agent can fully react with pollutants, and the phosphorus removal efficiency is improved. The supernatant of the high-efficiency sedimentation tank flows back into the anaerobic tank, and after biological phosphorus removal, the supernatant of the anaerobic tank is used as the effluent of the whole system and is discharged after reaching the standard,

preferably, an inclined tube filler is further arranged below the water collecting tank. The surface load of the high-efficiency sedimentation tank can be further improved, and the treatment efficiency is increased.

Preferably, an aeration system is further arranged in the high-efficiency sedimentation tank and is positioned below the inclined tube filler. The blower can adopt a Roots blower or an air compressor, can share equipment with a biochemical system or a compressed air system, and has the advantages of high equipment utilization rate, investment saving, simple facility and good treatment effect.

The utility model discloses a municipal wastewater dephosphorization system sets up the anaerobism before high-efficient sedimentation tank and releases the phosphorus pond, can make the phosphorus fully release from the anaerobic condition, increases the dephosphorization effect of follow-up workshop section, can not only effectively control the use amount of dephosphorization medicament, also enables sewage discharge and stabilizes up to standard, has energy saving and emission reduction's advantage.

Drawings

FIG. 1 is a schematic structural diagram of a municipal wastewater dephosphorization system according to an embodiment of the present invention.

FIG. 2 is a top view of the anaerobic phosphorus release tank.

Fig. 3 is a sectional view a-a of fig. 2.

Fig. 4 is a sectional view B-B of fig. 2.

Fig. 5 is a top view structural diagram of the high efficiency sedimentation tank.

Fig. 6 is a sectional view a-a of fig. 5.

Fig. 7 is a schematic view of the structure of fig. 5 with the water collecting pipe removed.

In the figure: 1. an anaerobic tank; 2. an anaerobic phosphorus release tank; 3. a high-efficiency sedimentation tank; 4. a sludge tank; 5. a sludge dewatering machine room; 6. a dosing chamber; 7. a water inlet pool; 8. a water inlet groove; 9. a main pool of the phosphorus release pool; 10. a supernatant collecting tank; 11. a first sludge collection tank; 12. a water outlet groove; 13. a sludge collection tank; 14. a boom truck type pump dredge; 15. a lift pump; 16. a sludge pump; 17. water inlet diversion holes; 18. water distribution round holes; 19. a baffle; 20. a first dosing tank; 21. a second dosing tank; 22. a main sedimentation tank 23 and a second sludge collection tank; 24. a water collection tank; 25. a drainage channel; 26. a sludge discharge pipe; 27. an aeration system; 28. filling the inclined tube; 29. adding a medicine into the stirrer; 30. a central transmission mud scraper.

Detailed Description

The present invention will be further described with reference to fig. 1-7 and the following detailed description.

A municipal wastewater dephosphorization system is shown in figure 1 and comprises an anaerobic tank 1, an efficient sedimentation tank 3, a sludge tank 4 and an anaerobic phosphorus release tank 2, wherein the anaerobic tank 1, the anaerobic phosphorus release tank 2, the efficient sedimentation tank 3 and the sludge tank 4 are sequentially communicated, the supernatant of the anaerobic phosphorus release tank 2 flows into the efficient sedimentation tank 3, the slurry of the efficient sedimentation tank 3 flows into the sludge tank 4, and the slurry of the anaerobic phosphorus release tank 2 and the supernatant of the efficient sedimentation tank 3 flow back to the anaerobic tank 1. Still include sludge

dewatering computer lab

5, 5 imports of sludge dewatering computer lab and 4 exit linkage in sludge impoundment. Also comprises a dosing room 6, and the dosing room 6 is connected with a dosing port of the high-efficiency sedimentation tank 3.

As shown in the attached figures 2, 3 and 4, a water inlet tank 7, a water inlet tank 8, a phosphorus release tank main tank 9, a supernatant collecting tank 10 and a sludge collecting tank 11 are arranged in the anaerobic phosphorus release tank 2, the water inlet tank 7, the water inlet tank 8 and the phosphorus release tank main tank 9 are sequentially connected, a water outlet tank 12 and a sludge collecting tank 13 are arranged in the phosphorus release tank main tank 9, the water outlet tank 12 is communicated with the supernatant collecting tank 10, the sludge collecting tank 13 is communicated with a first sludge collecting tank 11, the supernatant collecting tank 10 is provided with a sewage pipe connected to a water inlet of the efficient sedimentation tank 3, the first sludge collecting tank 11 is provided with a sludge pipe connected to an inlet of the anaerobic phosphorus release tank 2, the phosphorus release tank main tank 9 is provided with a truss type pump dredge 14, the supernatant collecting tank 10 is provided with two lifting pumps 15, and the first sludge collecting tank 11 is provided with two sludge pumps 16.

The main tank 9 of the phosphorus release tank is divided into two parts, each part is respectively provided with a truss vehicle type pump dredge 14, and a sludge pump 16 is integrated on the truss vehicle type pump dredge 14.

A plurality of water inlet guide holes 17 are arranged on the partition walls of the water inlet tank 7 and the water inlet tank 8, a plurality of water distribution round holes 18 are arranged at the bottom of the water inlet tank 8, and a guide plate 19 is arranged below the water inlet tank 8.

As shown in fig. 5, 6 and 7, the high-efficiency sedimentation tank 3 comprises a first dosing tank 20, a second dosing tank 21, a main sedimentation tank 22 and a second sludge collection tank 23, wherein the first dosing tank 20, the second dosing tank 21 and the main sedimentation tank 22 are sequentially communicated, dosing mixers 29 are arranged in the two dosing tanks, a central transmission mud scraper 30 is arranged in the main sedimentation tank 22, a water collection tank 24 is arranged above a mud scraping arm of the central transmission mud scraper 30, water in the water collection tank 24 is converged into a water drainage channel 25, the water drainage channel 25 is provided with a water pipe connected to the anaerobic tank 1, a sludge discharge pipe 26 is further arranged below the central transmission mud scraper 23, an outlet of the sludge discharge pipe 26 is connected to the second sludge collection tank 23, at least one sludge pump 16 is arranged in the second sludge collection tank 23, and the second sludge collection tank 23 is provided with a sludge pipe connected to the sludge tank 4.

An inclined tube filler 28 is also arranged below the water collecting tank 24. An aeration system 27 is also provided, the aeration system 27 being located below the down tube packing 28.

A vertical stirrer (not shown in the figure) is arranged in the anaerobic tank 1, and the vertical stirrer is made of glass fiber reinforced plastic blades. The lift pump 15 of the anaerobic phosphorus release pool 2 is a submersible sewage pump. The dosing system of the dosing room 6 adopts an adjustable metering pump. The sludge dewatering machine room 5 adopts a screw-stacking dewaterer. The effluent weir plate of the effluent tank 12 is made of SUS304, and the effluent tank 12 is uniformly provided with effluent square holes.

The municipal wastewater stays in the anaerobic phosphorus release pool 2 for 1.5 to 2.0 hours, and the effective water depth is 4 to 6 m.

The highest dissolved oxygen concentration designed in the anaerobic phosphorus release tank 2 is 0.2mg/L, the sludge concentration is 2-6mg/L, and the sludge load is 0.08kgBOD 5/kgVSS.d.

The water inlet end of the main tank 22 of the sedimentation tank is provided with a guide wall. The walking speed of the central transmission mud scraper 30 is 1.5-2.5 m/min. The filler material of the inclined tube filler 28 is PP, the aperture is 50mm, the upper opening of the water collecting tank 24 with the inclination angle of 60-75 degrees adopts a sawtooth weir form, and the interval of 90 degrees is 100-200 mm. The aeration system 27 uses a fan or a compressor to supply air.

The first dosing pool 20 is a coagulation reaction zone, the rotational speed of a dosing stirrer 29 in the first dosing pool is 50-70rpm, the diameter of the first dosing pool is 1500mm, the rotational speed of the dosing stirrer 29 in the second dosing pool 21 is 20-30rpm, and the diameter of the second dosing pool is 1500 mm.

The sludge dewatering machine room 5 is provided with a dewatering machine, a sludge pump, a screw conveyor (horizontal), a screw conveyor (inclined), an air compressor, an axial flow fan and a PAM preparation and feeding integrated machine.

In summary, the preferred embodiments of the present invention are not intended to limit the scope of the present invention, and all equivalent changes and modifications made according to the content of the claims of the present invention should be considered as the technical scope of the present invention.

Claims

1. The utility model provides a municipal wastewater dephosphorization system, includes anaerobism pond (1), high-efficient sedimentation tank (3), sludge impoundment (4), its characterized in that: the anaerobic phosphorus release device is characterized by further comprising an anaerobic phosphorus release tank (2), wherein the anaerobic tank (1), the anaerobic phosphorus release tank (2), the efficient sedimentation tank (3) and the sludge tank (4) are sequentially communicated, the supernatant of the anaerobic phosphorus release tank (2) flows into the efficient sedimentation tank (3), the slurry of the efficient sedimentation tank (3) flows into the sludge tank (4), and the slurry of the anaerobic phosphorus release tank (2) and the supernatant of the efficient sedimentation tank (3) flow back to the anaerobic tank (1).

2. The municipal wastewater dephosphorization system according to claim 1, wherein: the sludge dewatering equipment further comprises a sludge dewatering machine room (5), and an inlet of the sludge dewatering machine room (5) is connected with an outlet of the sludge pool (4).

3. The municipal wastewater dephosphorization system according to claim 1, wherein: and the medicine adding room (6) is also included, and the medicine adding room (6) is connected with the medicine adding port of the high-efficiency sedimentation tank (3).

4. The municipal wastewater dephosphorization system according to claim 1, wherein: a water inlet tank (7), a water inlet tank (8), a main phosphorus release tank pool (9), a supernatant collecting tank (10) and a sludge collecting tank (11) are arranged in the anaerobic phosphorus release tank (2), the water inlet tank (7), the water inlet tank (8) and the phosphorus release tank main tank (9) are sequentially connected, a water outlet tank (12) and a sludge collecting tank (13) are arranged in the phosphorus release tank main tank (9), the water outlet tank (12) is communicated with a supernatant collecting tank (10), the sludge collecting tank (13) is communicated with a first sludge collecting tank (11), the supernatant collecting tank (10) is provided with a sewage pipe connected to a water inlet of the efficient sedimentation tank (3), the first sludge collecting tank (11) is provided with a sludge pipe connected to an inlet of the anaerobic phosphorus release tank (2), the phosphorus release tank main tank (9) is provided with a truss vehicle type pump sludge suction machine (14), at least one lifting pump (15) is arranged in the supernatant collecting tank (10), and at least one sludge pump (16) is arranged in the first sludge collecting tank (11).

5. The municipal wastewater dephosphorization system according to claim 4, wherein: the phosphorus release tank main tank (9) is divided into two parts, each part is provided with a truss vehicle type pump dredge (14), and a sludge pump (16) is integrated on the truss vehicle type pump dredge (14).

6. The municipal wastewater dephosphorization system according to claim 4, wherein: the water inlet tank is characterized in that a plurality of water inlet diversion holes (17) are formed in the partition walls of the water inlet tank (7) and the water inlet tank (8), a plurality of water distribution round holes (18) are formed in the bottom of the water inlet tank (8), and a diversion plate (19) is arranged below the water inlet tank (8).

7. The municipal wastewater dephosphorization system according to claim 4, wherein: the lifting pump (15) and the sludge pump (16) in the first sludge collecting tank (11) are respectively provided with two pumps.

8. The municipal wastewater dephosphorization system according to claim 1, wherein: the high-efficiency sedimentation tank (3) comprises a first dosing tank (20), a second dosing tank (21) and a main sedimentation tank (22), second sludge collecting pit (23), first dosing pond (20), second dosing pond (21), sedimentation tank main pool (22) communicate in proper order, all set up in two dosing ponds and add medicine mixer (29), set up central transmission mud scraper (30) in sedimentation tank main pool (22), central transmission mud scraper (30) are scraped mud arm top and are set up water catch bowl (24), water catch bowl (24) water converges and enter drainage canal (25), drainage canal (25) play water has water piping connection to anaerobism pond (1), central transmission mud scraper (30) below still is provided with sludge discharge pipe (26), sludge discharge pipe (26) export gets into second sludge collecting pit (23), set up in second sludge collecting pit (23) at least one sludge pump (16), second sludge collecting pit (23) have sludge piping connection to sludge impoundment (4).

9. The municipal wastewater dephosphorization system according to claim 8, wherein: an inclined tube filler (28) is also arranged below the water collecting tank (24).

10. The municipal wastewater dephosphorization system according to claim 9, wherein: an aeration system (27) is also arranged in the high-efficiency sedimentation tank (3), and the aeration system (27) is positioned below the inclined tube filler (28).