CN218232076U

CN218232076U - Municipal administration sewage treatment plant

Info

Publication number: CN218232076U
Application number: CN202221070546.0U
Authority: CN
Inventors: 李可可; 尚娜; 李丹; 原宝岗; 王亚楠; 董瑞侠; 陈娟娟
Original assignee: Shanxi Coal Zhongwei Environmental Technology Co ltd
Current assignee: Shanxi Coal Zhongwei Environmental Technology Co ltd
Priority date: 2022-05-07
Filing date: 2022-05-07
Publication date: 2023-01-06
Anticipated expiration: 2032-05-07

Abstract

The utility model relates to a sewage treatment technical field discloses a municipal administration sewage treatment plant, including thick grid, the outside box of thick grid has connected gradually thin grid outside box, whirl grit chamber, biochemical system, two sedimentation tanks, middle pond, high-efficient clarification tank, denitrification filtering pond and clean water basin through connecting the water pipe, two sedimentation tanks still have connected gradually mud reflux pump pond and dehydration computer lab through connecting the water pipe, biochemical system includes anaerobism pond, one-level oxygen deficiency pond, one-level good oxygen pond, second grade oxygen deficiency pond and second grade good oxygen pond, anaerobism pond, one-level oxygen deficiency pond, one-level good oxygen pond, second grade oxygen deficiency pond and second grade good oxygen pond all set up in same biochemical system box. The utility model discloses in, the device is through setting up biochemical system, when biochemical system discharges mud and the materialization mud that high-efficient depositing reservoir discharged mixes, because contain PAM, PAC in the materialization mud, be favorable to improving mud-water separation's efficiency.

Description

Municipal administration sewage treatment plant

Technical Field

The utility model relates to a sewage treatment technical field especially relates to a municipal administration sewage treatment plant.

Background

With the development of economy, the discharge amount of municipal sewage is increased year by year, and accounts for about 45 percent of the total discharge amount of the wastewater. The biochemical treatment is commonly used in municipal sewage, belongs to secondary treatment and mainly aims at removing non-settleable suspended matters and soluble biodegradable organic matters.

At present, most municipal sewage treatment plants adopt an activated sludge process, the principle of biological treatment is to complete the decomposition of organic matters and the synthesis of organisms through the biological action, especially the action of microorganisms, to convert organic pollutants into harmless gas products of carbon dioxide, liquid product water and solid products (biological sludge) rich in organic matters, the temperature can influence the activity of microorganisms in the biochemical treatment process, so the biochemical treatment effect is influenced, the influence of the temperature on the microorganisms is very wide, although certain types of bacteria are also activated in high-temperature environment and low-temperature environment, the most suitable temperature range for the growth of the microorganisms in the sewage treatment is 20-30 ℃, the physiological activity of the microorganisms is vigorous in the suitable temperature range, the activity is enhanced along with the increase of the temperature, the treatment effect is better, and beyond the range, the activity of the microorganisms is poor, and the biological reaction process is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the municipal administration sewage treatment plant who provides can be favorable to improving mud-water separation's efficiency, reduces the quantity of lime, molysite simultaneously to PAM, PAC in the reuse mud practice thrift the cost in the sludge treatment of high-efficient depositing reservoir.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a municipal sewage treatment device comprises a coarse grating, wherein the outer box body of the coarse grating is sequentially connected with a fine grating outer box body, a rotational flow grit chamber, a biochemical system, a secondary sedimentation tank, an intermediate water tank, a high-efficiency clarification tank, a denitrification filter tank and a clean water tank through connecting water pipes;

the biochemical system comprises an anaerobic tank, a primary anoxic tank, a primary aerobic tank, a secondary anoxic tank and a secondary aerobic tank, wherein the anaerobic tank, the primary anoxic tank, the primary aerobic tank, the secondary anoxic tank and the secondary aerobic tank are all arranged in the same biochemical system box body and are sequentially arranged from left to right;

through above-mentioned technical scheme, biochemical system is used for carrying out microorganism purification treatment with prefiltered sewage through looping through anaerobism pond, one-level oxygen deficiency pond, one-level good oxygen pond, second grade oxygen deficiency pond and second grade good oxygen pond with the sewage after filtering for form and discharge mud.

Furthermore, the anaerobic tank, the first-stage anoxic tank, the first-stage aerobic tank, the second-stage anoxic tank and the second-stage aerobic tank are connected with one another through water filtering partition plates;

through above-mentioned technical scheme, make things convenient for the back sewage of filtering to purify gradually.

Furthermore, the primary aerobic tank and the secondary aerobic tank are both connected with a blower room through a ventilation pipeline, and the denitrification filter tank is connected with the other blower room through the ventilation pipeline;

through the technical scheme, the air blower room is used for adding oxygen into the primary aerobic tank, the secondary aerobic tank and the denitrification filter tank through the aeration fan, so that the purification efficiency of the primary aerobic tank, the secondary aerobic tank and the denitrification filter tank is improved.

Furthermore, a mud scraper is arranged inside the secondary sedimentation tank, and a submersible stirrer is arranged inside the anaerobic tank;

through above-mentioned technical scheme, the mud scraper is used for carrying out the outer wall with the inside mud material of deposiing of secondary sedimentation pond and gets, prevents that the mud material from gluing and influencing secondary sedimentation pond and use on the secondary sedimentation pond outer wall.

Furthermore, the high-efficiency clarification tank is connected with a PAC & PAM dosing pump through an external dosing pipeline, and the denitrification filter tank is connected with a dosing room through an external dosing pipeline;

through above-mentioned technical scheme, PAC & PAM dosing pump is used for adding PAC and PAM to inside when high-efficient depositing reservoir handles sewage, adds between the medicine and is used for adding denitrifying bacteria to inside when the denitrifying filter handles sewage, and then improves sewage treatment quality and sewage treatment efficiency.

Further, the high-efficiency clarification tank is connected with a sludge reflux pump tank through a sludge pipeline, and the sludge reflux pump tank is connected with an anaerobic tank through a sludge pipeline;

through the technical scheme, the device is used for multiple-time circulation purification of sludge, and the sewage purification efficiency is improved.

Furthermore, a branch is arranged on a water outlet pipeline of the clean water tank and communicated to the inside of the denitrification filter tank, and the other end of a sludge water outlet pipeline of the high-efficiency clarification tank is communicated to the inside of the high-efficiency clarification tank and a connecting pipeline of the middle water tank;

through above-mentioned technical scheme, through setting up PAC & PAM dosing pump and insert high-efficient clarification tank, when materialization mud after high-efficient clarification tank deposits partly through the pipeline backward flow to high-efficient clarification tank intake department, because contain PAM, PAC in the mud after the sediment in the high-efficient clarification tank, with its backward flow, PAM, PAC in the reuse mud.

Furthermore, the gap between the thick grating rake teeth is set to be 10mm, and the gap between the thin grating rake teeth is set to be 3mm;

through above-mentioned technical scheme, thick grid and thin grid are used for carrying on progressively filtering treatment in proper order of sewage, prevent that large-scale foreign matter from getting into to the device in to the whole sewage treatment that carries lead to the fact certain influence.

The utility model discloses following beneficial effect has:

1. the utility model discloses in, this municipal administration sewage treatment plant is through setting up biochemical system, will pass through the anaerobism pond, one-level oxygen deficiency pond, one-level good oxygen pond, the sludge dewatering partial sludge conditioning pond is sent into to the materialized mud of discharging mud and high-efficient depositing reservoir after second grade oxygen deficiency pond and the good oxygen pond of second grade are handled in proper order and is mixed, because contain PAM, PAC in the materialized mud in the high-efficient depositing reservoir, biochemical mud and its mixed back are favorable to improving mud-water separation's efficiency, reduce lime simultaneously, the quantity of molysite, practice thrift the cost.

2. The utility model discloses in, this municipal administration sewage treatment plant inserts high-efficient depositing reservoir through setting up PAC & PAM dosing pump, when the materialization mud after high-efficient depositing reservoir deposits partly through the pipeline backward flow to high-efficient depositing reservoir intake, because contain PAM, PAC in the mud after the deposit in the high-efficient depositing reservoir, with its backward flow, PAM, PAC in the reuse mud practice thrift the cost.

Drawings

FIG. 1 is a schematic flow diagram of a municipal sewage treatment plant according to the present invention;

FIG. 2 is the utility model provides a municipal sewage treatment plant's flow system diagram.

Illustration of the drawings:

1. coarse grating; 2. fine grids; 3. a rotational flow grit chamber; 4. a biochemical system; 5. an anaerobic tank; 6. a first-stage anoxic tank; 7. a primary aerobic tank; 8. a secondary anoxic tank; 9. a secondary aerobic tank; 10. a secondary sedimentation tank; 11. a middle water tank; 12. a high-efficiency clarification tank; 13. a denitrification filter; 14. a clean water tank; 15. a dosing chamber; 16. a sludge reflux pump pool; 17. a dehydration machine room; 18. a blower room; 19. a submersible mixer; 20. a mud scraper; 21. PAC & PAM dosing pumps.

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. 1-2, the present invention provides an embodiment: a municipal sewage treatment device comprises a coarse grating 1, wherein an external box body of the coarse grating 1 is sequentially connected with an external box body of a fine grating 2, a rotational flow grit chamber 3, a biochemical system 4, a secondary sedimentation tank 10, an intermediate water tank 11, a high-efficiency clarification tank 12, a denitrification filter tank 13 and a clean water tank 14 through connecting water pipes, and the secondary sedimentation tank 10 is also sequentially connected with a sludge reflux pump tank 16 and a dewatering machine room 17 through connecting water pipes;

biochemical system 4 includes anaerobism pond 5, one-level oxygen deficiency pond 6, one-level good oxygen pond 7, second grade oxygen deficiency pond 8 and second grade good oxygen pond 9, anaerobism pond 5, one-level oxygen deficiency pond 6, one-level good oxygen pond 7, second grade oxygen deficiency pond 8 and second grade good oxygen pond 9 all set up in same biochemical system 4 box, and from left to right arrange in proper order, biochemical system 4 is through passing through anaerobism pond 5 with the sewage after filtering, one-level oxygen deficiency pond 6, one-level good oxygen pond 7, second grade oxygen deficiency pond 8 and second grade good oxygen pond 9, be used for carrying out microbial purification with prefilter's sewage, form and discharge mud.

The anaerobic tank 5, the primary anoxic tank 6, the primary aerobic tank 7, the secondary anoxic tank 8 and the secondary aerobic tank 9 are connected with each other through a water filtering baffle plate, sewage is purified gradually after being filtered conveniently, the primary aerobic tank 7 and the secondary aerobic tank 9 are both connected with a blower room 18 through ventilation pipelines, the denitrification filter tank 13 is connected with another blower room 18 through ventilation pipelines, the blower room 18 is used for adding oxygen into the primary aerobic tank 7, the secondary aerobic tank 9 and the denitrification filter tank 13 through an aeration blower, the purification efficiency of the primary aerobic tank 7, the secondary aerobic tank 9 and the denitrification filter tank 13 is improved, a sludge scraper 20 is arranged inside the secondary sedimentation tank 10, a submersible stirrer 19 is arranged inside the anaerobic tank 5, the sludge scraper 20 is used for taking sludge substances precipitated inside the secondary sedimentation tank 10 on the outer wall, the sludge substances are prevented from being bonded on the outer wall of the secondary sedimentation tank 10 to influence the use of the secondary sedimentation tank 10, the high-efficiency sedimentation tank 12 is connected with a PAC & PAM dosing pump 21 through an external dosing pipeline, the denitrification filter tank 13 is connected with a PAC and PAM dosing pump 12 through an external dosing pipeline, the PAC dosing pump is connected with a sewage purification and a sewage backflow pump 16 for improving the sewage treatment by a sewage backflow pipeline, the sewage purification efficiency of a sewage purification and a sewage purification sewage treatment sewage tank 12, the sewage treatment by a sewage purification and a sewage purification sewage treatment bypass sewage tank 12, the clearance of 1 rake teeth of thick grid sets up to 10mm, and the clearance of 2 rake teeth of thin grid sets up to 3mm, and thick grid 1 and thin grid 2 are used for carrying out the filtration treatment gradually in proper order of sewage, prevent to carry out sewage treatment to whole in the large-scale foreign matter entering device and cause certain influence, and when weather was colder winter, for the activity of guaranteeing microorganism in the biological pond, the temperature of sewage need to be guaranteed, can guarantee the temperature through following mode this moment: (1) covering a ground pipeline with a heat insulation material; (2) a heater is added at the air inlet of the aeration fan to heat air, and the temperature in the biochemical system 4 is ensured in the aeration process; (3) cover the biochemical pond through the canopy lid and keep warm to guarantee the activity of microorganism, the canopy lid still can be used to collect behind the foul smell simultaneously, deodorizes.

The working principle is as follows: the municipal sewage treatment device comprises the following sewage treatment steps: sewage firstly enters an anaerobic tank 5, a submersible stirrer 19 is arranged in the area to mix inlet water with return sludge of a back-stage biochemical mixed liquid, nitrate nitrogen is provided by a back-stage biochemical return system to carry out denitrification reaction, outlet water enters a first-stage anoxic tank 6 to remove part of ammonia nitrogen in the water under the denitrification condition, the outlet water enters a first-stage aerobic tank 7 to carry out nitrification reaction, sludge-water mixed liquid is sent back to a first-stage aerobic tank 7 of an anaerobic zone through a nitrification liquid return pump through a pipeline, the outlet water enters a second-stage anoxic tank 8, the rest nitrate nitrogen is removed by carrying out denitrification reaction at the position, the second-stage anoxic outlet water enters a second-stage aerobic tank 9 to further degrade the rest sludge, the outlet water of the second-stage aerobic tank 9 enters a second-settling tank 10 to carry out sludge-water separation on the mixed liquid, after the settled sludge is collected by the second-settling tank 10, a part of the sludge is returned to the anaerobic tank 5 through a pipeline to supplement the sludge concentration of the system, and the rest sludge enters a sludge tank; the effluent of the secondary sedimentation tank 10 enters an intermediate water tank 11, the effluent is pumped to an efficient clarification tank 12 by a lifting pump, after PAC is added, PAM medicament is flocculated with pollutants such as residual suspended matters and total phosphorus in water, coagulation and sedimentation are carried out and then removed, the effluent enters a denitrification deep bed filter, a part of materialized sludge precipitated by the efficient clarification tank 12 flows back to the water inlet of the efficient clarification tank 12, the efficient clarification tank 12 further removes the total nitrogen in the water in the denitrification deep bed filter and then enters a clear water tank 14, bactericide is added into the clear water tank 14 and then reaches the standard to be discharged, the municipal sewage treatment device sends the discharged sludge sequentially treated by the anaerobic tank 5, an anoxic tank 6, a primary aerobic tank 7, a secondary anoxic tank 8 and a secondary aerobic tank 9 and the materialized sludge discharged by the efficient clarification tank 12 to a sludge tank of a sludge dewatering part through a biochemical system 4 for mixing, the materialized sludge contains PAM and PAC and is mixed with the biochemical sludge, the biochemical sludge is favorable for improving the separation efficiency of the municipal sludge separation, meanwhile, the usage amount of iron salts is reduced, the sewage treatment device also can be connected to the efficient clarification tank 12 by a PAC and PAC reflux of the PAM and the sludge containing PAC and the PAC after PAM and the PAM sludge is repeatedly used for recycling, and the sewage treatment, the PAC reflux of the PAM sludge in the efficient clarification tank 12, and the PAC can be recycled after PAM sludge containing sewage treatment.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a municipal administration sewage treatment plant, includes thick grid (1), its characterized in that: the external box body of the coarse grating (1) is sequentially connected with the external box body of the fine grating (2), the rotational flow grit chamber (3), the biochemical system (4), the secondary sedimentation tank (10), the intermediate water tank (11), the high-efficiency clarification tank (12), the denitrification filter tank (13) and the clean water tank (14) through connecting water pipes, and the secondary sedimentation tank (10) is further sequentially connected with a sludge reflux pump tank (16) and a dewatering machine room (17) through connecting water pipes;

biochemical system (4) are including anaerobism pond (5), one-level oxygen deficiency pond (6), one-level good oxygen pond (7), second grade oxygen deficiency pond (8) and second grade good oxygen pond (9), anaerobism pond (5), one-level oxygen deficiency pond (6), one-level good oxygen pond (7), second grade oxygen deficiency pond (8) and second grade good oxygen pond (9) all set up in same biochemical system (4) box, and from left to right arrange in proper order.

2. The municipal sewage treatment apparatus of claim 1, wherein: the anaerobic tank (5), the first-stage anoxic tank (6), the first-stage aerobic tank (7), the second-stage anoxic tank (8) and the second-stage aerobic tank (9) are connected with each other through water filtering partition plates.

3. The municipal sewage treatment apparatus of claim 1, wherein: the primary aerobic tank (7) and the secondary aerobic tank (9) are both connected with a blower room (18) through ventilation pipelines, and the denitrification filter (13) is connected with another blower room (18) through a ventilation pipeline.

4. The municipal sewage treatment apparatus of claim 1, wherein: a mud scraper (20) is arranged in the secondary sedimentation tank (10), and a submersible stirrer (19) is arranged in the anaerobic tank (5).

5. The municipal sewage treatment apparatus of claim 1, wherein: the high-efficiency clarification tank (12) is connected with a PAC & PAM dosing pump (21) through an external dosing pipeline, and the denitrification filter tank (13) is connected with a dosing room (15) through an external dosing pipeline.

6. The municipal sewage treatment apparatus of claim 1, wherein: the high-efficiency clarification tank (12) is connected with a sludge reflux pump tank (16) through a sludge pipeline, and the sludge reflux pump tank (16) is connected with an anaerobic tank (5) through a sludge pipeline.

7. The municipal sewage treatment apparatus of claim 1, wherein: the water outlet pipeline of the clean water tank (14) is provided with a branch communicated to the inside of the denitrification filter tank (13), and the other end of the sludge water outlet pipeline of the high-efficiency clarification tank (12) is communicated to the inside of the connecting pipeline of the high-efficiency clarification tank (12) and the intermediate water tank (11).

8. The municipal sewage treatment apparatus of claim 1, wherein: the rake tooth gap of the coarse grating (1) is set to be 10mm, and the rake tooth gap of the fine grating (2) is set to be 3mm.