CN220300495U

CN220300495U - Sewage plant filtering pond back flush water recycling system

Info

Publication number: CN220300495U
Application number: CN202321972303.0U
Authority: CN
Inventors: 曹克勋; 杨勇
Original assignee: CHONGQING ZHONGTIAN WATER SUPPLY CO LTD
Current assignee: CHONGQING ZHONGTIAN WATER SUPPLY CO LTD
Priority date: 2023-07-26
Filing date: 2023-07-26
Publication date: 2024-01-05
Anticipated expiration: 2033-07-26

Abstract

The utility model discloses a sewage plant filter tank backwash water recycling system which comprises an adjusting tank, an anaerobic tank, an anoxic tank, an aerobic tank and a filtering tank which are sequentially connected through pipelines, wherein a filter screen is arranged in the filtering tank, a backwash water inflow pipe for flushing the filter screen and a backwash water outflow pipe for outputting the flushed backwash water are also connected to the filtering tank, a backwash water sedimentation tower and a three-way valve positioned at the rear end of the backwash water sedimentation tower are arranged on the backwash water outflow pipe, one outlet end of the three-way valve is connected to the adjusting tank, the other outlet end of the three-way valve is connected to the anoxic tank, the bottom of the backwash water sedimentation tower is connected to a sludge tank through a sludge conveying pipe, and a water quality sensor is also arranged on the backwash water outflow pipe between the three-way valve and the backwash water sedimentation tower. The sewage plant filter tank backwash water recycling system provided by the utility model can effectively reduce the load of the original main treatment process, and has more reasonable overall structure and good stability.

Description

Sewage plant filtering pond back flush water recycling system

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to a sewage plant filter tank backwash water recycling system.

Background

When sewage is treated, filtration is almost a necessary process.

In order to ensure the normal filtering effect of the filter screen after the filter screen in the filter tank is used for a period of time, the filter screen is generally required to be backwashed regularly, dirt and impurities in the filter screen can be removed through backwashing, and the filtering effect is recovered.

In the prior art, for the part of backwash water, a plurality of sewage treatment plants take measures that the whole sewage treatment plants directly flow back to the front of a reaction sedimentation tank of a main treatment process after untreated, however, the treatment mode increases the load of an original sewage treatment system, namely, the system structure is unreasonable, and the operation efficiency of the system is low.

Disclosure of Invention

In view of the above, the utility model aims to provide a sewage plant filter back flushing water recycling system so as to solve the problems in the prior art.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

the utility model provides a sewage plant filtering pond back flush water recycling system, includes equalizing basin, anaerobism pond, anoxic tank, good oxygen pond and the filtering ponds of pipeline connection in proper order, install the filter screen in the filtering ponds, still be connected with on the filtering ponds be used for to the back flush water flow pipe that the filter screen washed and will wash back flush water output after the washing, install back flush water sedimentation tower and be located on the back flush water flow pipe the three-way valve of back end of back flush water sedimentation tower, an exit end of three-way valve is connected to the equalizing basin, another exit end of three-way valve is connected to the anoxic tank, the bottom of back flush water sedimentation tower is connected to the mud jar through mud conveyer pipe, the three-way valve with still be provided with water quality sensor on the back flush water flow pipe between the back flush water sedimentation tower.

Preferably, the filter tank is further connected with a compressed air input pipe, the input end of the compressed air input pipe is connected with an air compressor, and the output end of the compressed air input pipe is connected to the inside of the filter screen.

Preferably, the backwash water inflow pipe comprises a backwash water inflow main pipe, a clean water inflow pipe and a liquid medicine inflow pipe, wherein the output end of the backwash water inflow main pipe is connected to the inside of the filter screen, and the output ends of the clean water inflow pipe and the liquid medicine inflow pipe are communicated with the input end of the backwash water inflow main pipe; the input end of the clean water inflow pipe is connected with a water storage tank, and the input end of the liquid medicine inflow pipe is connected with a medicine tank.

Preferably, a liquid level sensor is arranged on the backwash water sedimentation tower.

Preferably, the filter screen is the drum structure, be provided with the fixed plate in the filter vat and be located the driving piece of fixed plate bottom, the filter screen bottom opening, and sealed card is established on the fixed plate, the filter screen is inside to be provided with back flush mechanism, back flush mechanism includes pivot, rotary joint, shower nozzle, inside transverse tube and inside vertical pipe, the interval is installed in the pivot a plurality of inside transverse tube, the uppermost inside transverse tube passes through rotary joint with back flush water inflow pipe intercommunication, keep away from the inside transverse tube of pivot one end with inside vertical pipe intercommunication, install a plurality of orientation on the inside vertical pipe the shower nozzle of filter screen inner wall, the bottom of pivot passes the fixed plate with the driving piece transmission is connected.

Preferably, the side wall of the rotating shaft is also connected with at least two brush shafts, the other ends of the brush shafts are fixedly connected with a brush fixing plate, and the brush fixing plate is provided with brush hair which can be abutted against the inner wall of the filter screen.

The utility model has the beneficial effects that:

according to the sewage plant filter tank backwash water recycling system provided by the utility model, the backwash water sedimentation tower and the three-way valve positioned at the rear end of the backwash water sedimentation tower are arranged on the backwash water outflow pipe, and the water quality sensor is arranged at the same time, so that the water after being washed by the filter screen of the filter tank is firstly flocculated and sedimented and then is conveyed into the regulating tank or the anoxic tank in the main treatment process according to the water quality condition, so that the load of the original main treatment process can be effectively reduced, the overall structure is more reasonable, and the stability is good.

Drawings

Fig. 1 is a schematic structural view of the present utility model.

FIG. 2 is a schematic view showing the internal structure of the filtering tank according to the present utility model.

Reference numerals illustrate:

1. an adjusting tank; 2. an anaerobic tank; 3. an anoxic tank; 4. an aerobic tank; 5. a filtering tank; 6. a filter screen; 7. a backwash water inflow pipe; 7-1, back flushing water flows into the main pipe; 7-2, a clean water inflow pipe; 7-3, a liquid medicine inflow pipe; 8. a backwash water outflow pipe; 9. back flushing the water precipitation tower; 10. a three-way valve; 11. a sludge conveying pipe; 12. a sludge tank; 13. a water quality sensor; 14. a compressed air input pipe; 15. an air compressor; 16. a water storage tank; 17. a medicament canister; 18. a liquid level sensor; 19. a fixing plate; 20. a driving member; 21. a rotating shaft; 22. a rotary joint; 23. a spray head; 24. an inner transverse tube; 25. an inner longitudinal tube; 26. a brush shaft; 27. a brush fixing plate; 28. and (3) brushing.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit or scope of the utility model, which is therefore not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model.

Referring to fig. 1 and 2, this embodiment provides a sewage plant filtering pond back flush water recycling system, including equalizing basin 1, anaerobic tank 2, anoxic tank 3, aerobic tank 4 and filtering tank 5 that are connected by pipeline in proper order, install filter screen 6 in the filtering tank 5, wherein equalizing basin 1, anaerobic tank 2, anoxic tank 3, aerobic tank 4 and filtering tank 5 etc. parts are parts in the primary sewage treatment process, still be connected with on the filtering tank 5 and be used for rinsing filter screen 6 back flush water inflow pipe 7 and back flush water outflow pipe 8 that will rinse back flush water output after the washing, install back flush water sedimentation tower 9 and be located on the back flush water outflow pipe 8 back flush water sedimentation tower 9's three-way valve 10, another outlet end of three-way valve 10 is connected to equalizing basin 1, another outlet end of three-way valve 10 is connected to anoxic tank 3, back flush water sedimentation tower 9's bottom is connected to sludge tank 12 through mud conveyer pipe 11, still be provided with quality sensor 13 on back flush water outflow pipe 8 between three-way valve 10 and back flush water sedimentation tower 9. The water quality sensor 13 can be a TOC sensor, TOC is also called total organic carbon, is an important index for analyzing the organic matter pollution content in water, and is conveyed to the regulating tank 1 through the three-way valve 10 when the TOC value of the effluent of the backwash water precipitation tower 9 is measured to be higher, such as more than 100mg/L, and is conveyed to the anoxic tank 3 through the three-way valve 10 when the measured value is less than 100 mg/L.

In some preferred embodiments, to improve the degree of automation, a controller is further provided, and the controller is in signal connection with both the three-way valve 10 and the water quality sensor 13, and is used for automatically controlling the opening and closing of the three-way valve 10 according to the measured value of the water quality sensor 13.

Specifically, in this embodiment, through installing back flush water sedimentation tower 9 and being located on back flush water outflow pipe 8 back flush water sedimentation tower 9 rear end three-way valve 10, set up water quality sensor 13 simultaneously, will carry out flocculation precipitation to the water after the filter screen 6 of filter tank 5 first, and then carry in equalizing basin 1 or anoxic tank 3 in the main treatment process according to the quality of water condition, compare the system before the former treatment mode directly will directly back flow to the sedimentation tank with back flush water all not through handling, this embodiment can effectively reduce the load of former main treatment process, overall structure is more reasonable, stability is good.

Continuing with the illustration of fig. 1, in some embodiments, the filter tank 5 is further connected with a compressed air input pipe 14, an input end of the compressed air input pipe 14 is connected with an air compressor 15, and an output end of the compressed air input pipe 14 is connected to the inside of the filter screen 6. Air generated by the air compressor 15 is conveyed into the filter screen 6 through the compressed air input pipe 14, so that a certain gas scouring force is provided during back flushing, and the cleaning effect of the filter screen is improved.

In some embodiments, the backwash water inflow pipe 7 comprises a backwash water inflow main pipe 7-1, a clean water inflow pipe 7-2 and a liquid medicine inflow pipe 7-3, wherein the output end of the backwash water inflow main pipe 7-1 is connected to the inside of the filter screen 6, and the output ends of the clean water inflow pipe 7-2 and the liquid medicine inflow pipe 7-3 are communicated with the input end of the backwash water inflow main pipe 7-1; the input end of the clean water inflow pipe 7-2 is connected with a water storage tank 16, and the input end of the liquid medicine inflow pipe 7-3 is connected with a medicine tank 17. During the back flushing process, chemical agents such as acidic agents or alkaline agents in the agent tank 17 are delivered to the filter screen 6 through the liquid medicine inflow pipe 7-3, so that the cleaning effect on dirt of the filter screen 6 is improved.

The liquid level sensor 18 is arranged on the back flush water sedimentation tower 9, the liquid level inside the back flush water sedimentation tower 9 is monitored by the liquid level sensor 18, and after the liquid level reaches a certain height value, the back flush water in the back flush water sedimentation tower 9 is output.

In some embodiments, as shown in fig. 2, the filter screen 6 is in a cylindrical structure, a fixing plate 19 and a driving member 20 positioned at the bottom of the fixing plate 19 are arranged in the filter tank 5, the driving member 20 can be a waterproof motor, or the motor is hermetically installed at the bottom of the fixing plate 19, the bottom of the filter screen 6 is opened and is hermetically clamped on the fixing plate 19, a back flushing mechanism is arranged in the filter screen 6, the back flushing mechanism comprises a rotating shaft 21, a rotating joint 22, a spray head 23, an inner transverse pipe 24 and an inner longitudinal pipe 25, a plurality of inner transverse pipes 24 are installed on the rotating shaft 21 at intervals, the uppermost inner transverse pipe 24 is communicated with the back flushing water inflow pipe 7 through the rotating joint 22, in particular to be connected with the output end of the back flushing water inflow main pipe 7-1, the inner transverse pipe 24 far away from one end of the rotating shaft 21 is communicated with the inner longitudinal pipe 25, a plurality of spray heads 23 facing the inner wall of the filter screen 6 are installed on the inner longitudinal pipe 25, and the bottom of the rotating shaft 21 penetrates through the fixing plate 19 to be in transmission connection with the driving member 20. Further, at least two brush shafts 26 are further connected to the side wall of the rotating shaft 21, a brush fixing plate 27 is fixedly connected to the other ends of the brush shafts 26, and bristles 28 capable of being abutted to the inner wall of the filter screen 6 are arranged on the brush fixing plate 27. By arranging the back flushing mechanism, the flushing effect on the filter screen 6 can be further improved, and dirt and impurities in the filter screen 6 can be thoroughly cleaned.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The utility model provides a sewage plant filtering pond back flush water recycling system, its characterized in that, including equalizing basin (1), anaerobism pond (2), anoxic tank (3), good oxygen pond (4) and filtering ponds (5) of pipeline connection in proper order, install filter screen (6) in filtering ponds (5), still be connected with on filtering ponds (5) be used for right backwash water flow pipe (7) and the backwash water outflow pipe (8) of the backwash water output after will washing of filter screen (6), install backwash water sedimentation tower (9) and be located on backwash water outflow pipe (8) backwash water sedimentation tower (9) rear end three-way valve (10), one exit end of three-way valve (10) is connected to equalizing basin (1), another exit end of three-way valve (10) is connected to anoxic tank (3), the bottom of backwash water sedimentation tower (9) is connected to mud pot (12) through mud conveyer pipe (11), backwash water quality sensor (13) are still provided with on backwash water outflow pipe (8) between backwash water sedimentation tower (9).

2. The backwash water recycling system of a filter tank of a sewage plant according to claim 1, wherein the filter tank (5) is further connected with a compressed air input pipe (14), the input end of the compressed air input pipe (14) is connected with an air compressor (15), and the output end of the compressed air input pipe (14) is connected to the inside of the filter screen (6).

3. A sewage plant filter tank backwash water recycling system according to claim 1, characterized in that the backwash water inflow pipe (7) comprises a backwash water inflow main pipe (7-1), a clean water inflow pipe (7-2) and a liquid medicine inflow pipe (7-3), the output end of the backwash water inflow main pipe (7-1) is connected to the inside of the filter screen (6), and the output ends of the clean water inflow pipe (7-2) and the liquid medicine inflow pipe (7-3) are both communicated with the input end of the backwash water inflow main pipe (7-1); the input end of the clean water inflow pipe (7-2) is connected with a water storage tank (16), and the input end of the liquid medicine inflow pipe (7-3) is connected with a medicament tank (17).

4. A sewage plant filter tank backwash water recycling system according to claim 1, characterized in that a liquid level sensor (18) is installed on the backwash water sedimentation tower (9).

5. The back flushing water recycling system of the filtering pond of the sewage plant according to claim 1, wherein the filtering screen (6) is of a cylindrical structure, a fixed plate (19) and a driving piece (20) arranged at the bottom of the fixed plate (19) are arranged in the filtering pond (5), the bottom of the filtering screen (6) is opened, the fixed plate (19) is clamped in a sealing manner, a back flushing mechanism is arranged inside the filtering screen (6), the back flushing mechanism comprises a rotating shaft (21), a rotating joint (22), a spray head (23), an inner transverse pipe (24) and an inner longitudinal pipe (25), a plurality of inner transverse pipes (24) are arranged on the rotating shaft (21) at intervals, the uppermost inner transverse pipe (24) is communicated with the back flushing water flowing pipe (7) through the rotating joint (22), the inner transverse pipe (24) far away from one end of the rotating shaft (21) is communicated with the inner longitudinal pipe (25), a plurality of inner longitudinal pipes (25) are arranged on the inner longitudinal pipe (25) and face the inner wall of the filtering screen (6), and the rotating shaft (21) is connected with the bottom of the driving piece (20) through the rotating shaft (21).

6. The backwash water recycling system of a sewage plant filter tank according to claim 5, wherein at least two brush shafts (26) are further connected to the side wall of the rotating shaft (21), the other ends of the brush shafts (26) are fixedly connected with brush fixing plates (27), and bristles (28) capable of being abutted to the inner wall of the filter screen (6) are arranged on the brush fixing plates (27).