CN218435393U

CN218435393U - Garbage transfer station sewage treatment device

Info

Publication number: CN218435393U
Application number: CN202222543283.7U
Authority: CN
Inventors: 柳翔; 柯珂; 荣万; 周婉莹; 范文斌
Original assignee: Wuhan Jingchun Environmental Protection Technology Co ltd
Current assignee: Wuhan Jingchun Environmental Protection Technology Co ltd
Priority date: 2022-09-26
Filing date: 2022-09-26
Publication date: 2023-02-03
Anticipated expiration: 2032-09-26

Abstract

The utility model relates to a sewage treatment technical field discloses a rubbish transfer station sewage treatment plant, including pretreatment unit, bars ditch, hydrolysis-acidification pond, two-stage AO-MBR unit, fenton oxidation pond, coagulating sedimentation tank, clean water basin and sludge dewatering unit, pretreatment unit's delivery port with hydrolysis-acidification pond's water inlet intercommunication, hydrolysis-acidification pond's delivery port with the water inlet intercommunication of two-stage AO-MBR unit, the delivery port of two-stage AO-MBR unit with coagulating sedimentation tank's water inlet intercommunication, coagulating sedimentation tank's delivery port with the water inlet intercommunication of Fenton oxidation pond, the delivery port of Fenton oxidation pond with the water inlet intercommunication of clean water basin. The utility model discloses in, handle rubbish transfer station sewage through "preliminary treatment + hydrolytic acidification pond + two-stage AO-MBR + Fenton oxidation + coagulating sedimentation" combined process, make sewage treatment process efficiency high and economic environmental protection, go out water quality of water and can stably reach emission standard.

Description

Garbage transfer station sewage treatment device

Technical Field

The utility model relates to a sewage treatment technical field especially relates to a rubbish transfer station sewage treatment plant.

Background

Along with the rapid development of urbanization in China, the population of urban residents is continuously increased, and the yield of municipal domestic waste is rapidly increased. However, since large cities such as the north, the wide and deep cities are short of land resources, it is difficult to find a suitable garbage disposal site around the city, and the municipal solid waste needs to be sent to a remote place for disposal. Therefore, in order to realize the rapid, efficient, economic and green transfer of municipal solid waste, the waste transfer station is widely applied, and since the domestic waste contains a large amount of moisture, the compression liquid can be generated in the compression process, the flushing waste water can be generated when the ground, equipment and the like are flushed, and in addition, the domestic sewage, the rainfall surface runoff and the like of workers are also generated, so that the waste transfer station sewage is formed jointly.

In recent years, membrane technologies such as nanofiltration and reverse osmosis become widely applied methods in the sewage treatment of transfer stations at present, but in the actual operation process, the membrane technologies are complex to operate, strict in water inlet requirement and high in membrane replacement cost, so that the working efficiency is not high, and meanwhile, the generated membrane concentrated solution needs to be further treated, so that the investment and operation cost are high, the economic and environment-friendly effects are not achieved, and most of small and medium-sized garbage transfer stations are difficult to bear.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a sewage treatment device of a garbage transfer station.

In order to realize the purpose, the utility model adopts the following technical scheme: the utility model provides a rubbish transfer station sewage treatment plant, includes pretreatment unit, bars ditch, hydrolysis-acidification pool, two-stage A/O-MBR unit, fenton oxidation pond, coagulating sedimentation tank, clean water basin and sludge dewatering unit, pretreatment unit's delivery port with hydrolysis-acidification pool's water inlet intercommunication, hydrolysis-acidification pool's delivery port with the water inlet intercommunication of two-stage A/O-MBR unit, two-stage A/O-MBR unit's delivery port with coagulating sedimentation tank's water inlet intercommunication, coagulating sedimentation tank's delivery port with the water inlet intercommunication of Fenton oxidation tank, fenton oxidation tank's delivery port with the water inlet intercommunication of clean water basin.

As a further description of the above technical solution:

the pretreatment unit consists of a regulating tank, an oil separation sedimentation tank and an air floatation tank which are connected in sequence. And a water inlet of the adjusting tank is provided with a grid.

As a further description of the above technical solution:

the device comprises a regulating tank, a hydrolysis acidification tank, a water distribution system, an elastic filler, a two-stage A/O-MBR unit and a water treatment system, wherein a first mechanical stirrer is arranged in the regulating tank, an oil separation baffle is arranged in the oil separation sedimentation tank, the water distribution system is arranged at the bottom of the hydrolysis acidification tank, the elastic filler is arranged in the water distribution system, and the two-stage A/O-MBR unit comprises a one-stage anoxic tank, a one-stage aerobic tank, a two-stage anoxic tank, a two-stage aerobic tank and an MBR tank.

As a further description of the above technical solution:

be provided with second mechanical agitator and third mechanical agitator in one-level oxygen deficiency pond and the second grade oxygen deficiency pond respectively, be equipped with first aeration system and second aeration system in one-level good oxygen pond and the second grade good oxygen pond, the MBR pond is provided with membrane device.

As a further description of the above technical solution:

the primary aerobic tank is provided with a nitrifying liquid reflux pump, and the membrane device of the MBR tank adopts an immersed hollow fiber membrane.

As a further description of the above technical solution:

the MBR pond sets up the mud backwash pump, the Fenton oxidation pond is equipped with first charge device and fourth mechanical agitator, be provided with the suction pump between MBR pond, the Fenton oxidation pond.

As a further description of the above technical solution:

and the coagulating sedimentation tank is provided with a second dosing device and a fifth mechanical stirrer.

As a further description of the above technical solution:

the sludge treatment unit comprises a sludge pool and a sludge dewatering machine.

The utility model discloses following beneficial effect has:

1. the utility model discloses in, handle rubbish transfer station sewage through "preliminary treatment + hydrolytic acidification pond + two-stage AO-MBR + Fenton oxidation + coagulating sedimentation" combined process, make sewage treatment process efficiency high and economic environmental protection, go out water quality of water and can stably reach emission standard.

2. The utility model discloses in, through water distribution system's effect, can stir bottom mud, make it be in suspended state and with the sewage intensive mixing that gets into to improve the treatment effect in hydrolytic acidification pond, alleviateed subsequent processing's organic load. Internally mounted has the elastic packing to carry out the water conservancy cutting to the waste water of stirring, makes suspended state's mud and hydroenergy can mix more evenly abundant, for the growth of microorganism provides the advantage, has carried out the burden reduction for whole work.

Drawings

FIG. 1 is a schematic view of a sewage treatment plant of a garbage transfer station of the present invention.

Illustration of the drawings:

1. a grid trench; 2. a regulating tank; 3. an oil-separating sedimentation tank; 4. an air floatation tank; 5. a hydrolysis acidification pool; 6. a first-stage anoxic tank; 7. a primary aerobic tank; 8. a secondary anoxic tank; 9. a secondary aerobic tank; 10. an MBR tank; 11. a Fenton oxidation pond; 12. a coagulating sedimentation tank; 13. a clean water tank; 14. a sludge tank; 15. a sludge dewatering machine; 101. a grid; 201. a first mechanical agitator; 301. an oil-separating baffle; 501. a water distribution system; 502. an elastic filler; 601. a second mechanical agitator; 701. a first aeration system; 702. a nitrifying liquid reflux pump; 801. a third mechanical agitator; 901. a second aeration system; 1001. a sludge reflux pump; 1002. a membrane device; 1003. a suction pump; 1101. a first dosing device; 1102. a fourth mechanical agitator; 1201. a second dosing device; 1202. a fifth mechanical agitator.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides an embodiment: the utility model provides a rubbish transfer station sewage treatment plant, includes pretreatment unit, grid ditch 1, hydrolysis-acidification pool 5, two-stage AO-MBR unit, fenton oxidation pond 11, coagulating sedimentation tank 12, clean water basin 13 and sludge dewatering unit, its characterized in that: the water outlet of the pretreatment unit is communicated with the water inlet of a hydrolysis acidification tank 5, the water outlet of the hydrolysis acidification tank 5 is communicated with the water inlet of a two-stage A/O-MBR unit, the water outlet of the two-stage A/O-MBR unit is communicated with the water inlet of a coagulative precipitation tank 12, the water outlet of the coagulative precipitation tank 12 is communicated with the water inlet of a Fenton oxidation tank 11, and the water outlet of the Fenton oxidation tank 11 is communicated with the water inlet of a clean water tank 13.

The pretreatment unit consists of a regulating tank 2, an oil separation sedimentation tank 3 and an air flotation tank 4 which are connected in sequence. A water inlet of the adjusting tank 2 is provided with a grid 101 for filtering large-volume suspended matters and floating matters in water; the oil separation sedimentation tank 3 is used for removing oil substances in the sewage; the air flotation tank 4 is used for removing fine suspended solids in sewage and is provided with a first mechanical stirrer 201 in the adjusting tank 2 and is used for stirring the water quality uniformly, the oil separation baffle 301 is arranged in the oil separation sedimentation tank 3, the bottom of the hydrolysis acidification tank 5 is provided with a water distribution system 501, an elastic filler 502 is arranged in the water distribution system 501 and is used for stirring bottom sludge, so that the bottom sludge is in a suspended state and is fully mixed with the entering sewage, the treatment effect of the hydrolysis acidification tank 5 is improved, and the organic load of subsequent treatment is reduced. The two-stage A/O-MBR unit comprises a first-stage anoxic tank 6, a first-stage aerobic tank 7, a second-stage anoxic tank 8, a second-stage aerobic tank 9 and an MBR tank 10, wherein a second mechanical stirrer 601 and a third mechanical stirrer 801 are respectively arranged in the first-stage anoxic tank 6 and the second-stage anoxic tank 8 for low-speed stirring, a first aeration system 701 and a second aeration system 901 are arranged in the first-stage aerobic tank 7 and the second-stage aerobic tank 9 for continuous aeration during operation, the MBR tank 10 is provided with a membrane device 1002, the first-stage aerobic tank 7 is provided with a nitrified liquid reflux pump 702 for refluxing nitrified liquid to the front end of the first-stage anoxic tank 6, the membrane device 1002 of the MBR tank 10 adopts an immersed hollow fiber membrane, and the PVDF is used as the membrane material, the MBR tank 10 is provided with a sludge reflux pump 1001 for refluxing partial sludge to the first-stage anoxic tank 6 and supplementing the sludge amount in the two-stage A/O tank, the Fenton oxidation tank 11 is provided with a first medicine adding device 1101 and a fourth mechanical stirrer 1102, the first medicine adding device 1101 is used for adding Fenton reagent into the sewage, a suction pump 1003 is arranged between the MBR tank 10 and the Fenton oxidation tank 11, the coagulating sedimentation tank 12 is provided with a second medicine adding device 1201 and a fifth mechanical stirrer 1202, the second medicine adding device 1201 is used for adding PFS and PAM into the sewage, when the effluent of the coagulating sedimentation tank 12 reaches the discharge standard, the effluent flows into the clear water tank 13 for temporary storage or discharge, the sludge treatment unit comprises a sludge tank 14 and a sludge dewatering machine 15, the sludge tank 14 is used for storing sludge, the sludge dewatering machine 15 is used for dewatering sludge, and the effluent passes through the oil separation sedimentation tank 3 and the hydrolysis acidification tank 5, the MBR tank 10 and the coagulating sedimentation tank 12 are used for discharging sludge into a sludge tank 14, and then the sludge is dewatered by a sludge dewatering machine 15 and then is transported to an outside for disposal.

The working principle is as follows: when needing to use the utility model discloses rubbish transfer station sewage treatment plant is through pretreatment unit, bars ditch 1, hydrolysis acidification/5, two-stage AO-MBR unit, fenton oxidation pond 11, coagulating sedimentation tank 12, clean water basin 13 and sludge dewatering unit. The sewage of the garbage transfer station is filtered by a large-volume suspended substance and a large-volume floating substance in the sewage through a grid 101 arranged at a grid channel 1, and then enters an adjusting tank 2 to adjust the quality and quantity of the sewage. Then the sewage enters an oil separation sedimentation tank 3 to remove oil and fat substances in the sewage and solid impurities which cannot be intercepted by a grid, and the effluent of the oil separation sedimentation tank 3 enters an air flotation tank 4 to remove smaller suspended matters and floating matters. And then the biodegradability of the sewage is improved through the hydrolysis acidification tank 5, so that the subsequent biochemical treatment is facilitated. The effluent of the hydrolysis acidification tank 5 enters a two-stage A/0-MBR treatment unit, which comprises a first-stage anoxic tank 6, a first-stage aerobic tank 7, a second-stage anoxic tank 8, a second-stage aerobic tank 9 and an MBR tank 10 which are connected in sequence, and is used for performing biochemical treatment on sewage to remove most pollutants such as COD, BOD, ammonia nitrogen and the like. Effluent of the two-stage A/0-MBR treatment unit sequentially enters a Fenton oxidation tank 11 and a coagulating sedimentation tank 12, sewage is treated by utilizing a combination technology of Fenton oxidation and coagulating sedimentation, pollutants difficult to biodegrade are effectively removed to reach the discharge standard, and the treated sewage finally enters a clean water tank 13 for temporary storage or discharge.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions on some technical features, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a rubbish transfer station sewage treatment plant, includes pretreatment unit, grid canal (1), hydrolysis-acidification pool (5), two-stage A/O-MBR unit, fenton oxidation pond (11), coagulating sedimentation pond (12), clean water basin (13) and sludge dewatering unit, its characterized in that: the water outlet of the pretreatment unit is communicated with the water inlet of the hydrolysis acidification tank (5), the water outlet of the hydrolysis acidification tank (5) is communicated with the water inlet of the two-stage A/O-MBR unit, the water outlet of the two-stage A/O-MBR unit is communicated with the water inlet of the coagulation sedimentation tank (12), the water outlet of the coagulation sedimentation tank (12) is communicated with the water inlet of the Fenton oxidation tank (11), and the water outlet of the Fenton oxidation tank (11) is communicated with the water inlet of the clean water tank (13).

2. The sewage treatment plant of the garbage transfer station according to claim 1, wherein: the pretreatment unit comprises equalizing basin (2), oil separating sedimentation tank (3) and air flotation tank (4) that connect gradually, the water inlet of equalizing basin (2) sets up grid (101).

3. The sewage treatment plant of the garbage transfer station as claimed in claim 2, wherein: be equipped with first mechanical agitator (201) in equalizing basin (2), be equipped with oil removal baffle (301) in oil removal sedimentation tank (3), hydrolysis-acidification tank (5) bottom is equipped with water distribution system (501), the inside of water distribution system (501) is provided with elastic filler (502), two-stage AO-MBR unit includes one-level oxygen deficiency pond (6), one-level good oxygen pond (7), second grade oxygen deficiency pond (8), second grade good oxygen pond (9) and MBR pond (10).

4. The sewage treatment plant of the garbage transfer station according to claim 3, wherein: a second mechanical stirrer (601) and a third mechanical stirrer (801) are respectively arranged in the first-stage anoxic tank (6) and the second-stage anoxic tank (8), a first aeration system (701) and a second aeration system (901) are arranged in the first-stage aerobic tank (7) and the second-stage aerobic tank (9), and a membrane device (1002) is arranged in the MBR tank (10).

5. The sewage treatment plant of the garbage transfer station as claimed in claim 3, wherein: the primary aerobic tank (7) is provided with a nitrifying liquid reflux pump (702), and a membrane device (1002) of the MBR tank (10) adopts an immersed hollow fiber membrane.

6. The sewage treatment plant of the garbage transfer station according to claim 3, wherein: MBR pond (10) set up mud backwash pump (1001), fenton oxidation pond (11) are equipped with first charge device (1101) and fourth mechanical agitator (1102), be provided with suction pump (1003) between MBR pond (10), the Fenton oxidation pond (11).

7. The sewage treatment plant of the garbage transfer station according to claim 1, wherein: the coagulating sedimentation tank (12) is provided with a second medicine adding device (1201) and a fifth mechanical stirrer (1202).

8. The sewage treatment plant of the garbage transfer station as claimed in claim 1, wherein: the sludge dewatering unit comprises a sludge pool (14) and a sludge dewatering machine (15).