CN221117234U

CN221117234U - Can carry cities and towns sewage treatment system of mark dilatation

Info

Publication number: CN221117234U
Application number: CN202322690266.0U
Authority: CN
Inventors: 蒋燃刚; 孙振亮; 韦龙; 宗飞; 张亮
Original assignee: Wuxi Bomei Environmental Technology Co ltd
Current assignee: Wuxi Bomei Environmental Technology Co ltd
Priority date: 2023-10-08
Filing date: 2023-10-08
Publication date: 2024-06-11
Anticipated expiration: 2033-10-08

Abstract

The utility model relates to the technical field of sewage treatment, in particular to a town sewage treatment system capable of increasing the scale and the capacity, which comprises a coarse grille pond, a fine grille pond, a biological treatment system, a second anoxic pond, an MBR membrane tank, a sludge concentration pond, a disinfection pond and a sludge dewatering machine, wherein the coarse grille pond is connected with the fine grille pond through a lifting pump, the fine grille pond is connected with the biological treatment system through an aeration grit chamber, the biological treatment system is connected with the MBR membrane tank through the second anoxic pond, the MBR membrane tank is respectively connected with the disinfection pond and the sludge concentration pond, part of sludge in the sludge concentration pond flows back to the biological treatment system, and the other part of sludge is treated through the sludge dewatering machine. The integrated MBR membrane tank is adopted, so that the water-free transformation can be realized, the transformation construction content is simplified, the construction quantity is reduced, the construction cost is reduced, and the construction period is shortened; the equipment integration level is high, and the occupied area is small; so that the productivity of sewage treatment is greatly improved, and the quality of effluent can reach the surface level IV class.

Description

Can carry cities and towns sewage treatment system of mark dilatation

Technical Field

The utility model relates to the technical field of sewage treatment, in particular to a town sewage treatment system capable of increasing the volume by increasing the standard.

Background

With the continuous promotion of urban land and wastewater treatment emission standard improvement in China, the capacity of some urban wastewater treatment systems cannot meet the increasingly higher wastewater treatment demands, and new or enlarged wastewater treatment plants become effective schemes for solving the contradiction. In the face of the general shortage of construction sites, MBRs are increasingly being used.

In various effective schemes of reconstruction and expansion of sewage treatment plants, the MBR process has obvious advantages due to the characteristics of stable and reliable effluent quality, small occupied area and the like. However, in the implementation process of the reconstruction and expansion project, the production and line stop are often required, the original structure is not matched with the MBR membrane module, the reconstruction workload is large, the construction difficulty is large, the construction period is long, and the like.

In the newly-built project, the method can also meet the actual conditions of numerous pipelines, complex structure, high installation requirement of the MBR membrane module and the like in the design and construction of the MBR membrane tank.

Therefore, in order to improve efficiency, in town sewage treatment systems, modification of the conventional MBR membrane system is required.

Disclosure of utility model

The utility model solves the problems in the related art, and provides the town sewage treatment system capable of increasing the standard and the capacity, which adopts the integrated MBR membrane tank, can realize the transformation without stopping water, simplifies the transformation construction content, reduces the construction quantity, reduces the construction cost and shortens the construction period; the equipment integration level is high, and the occupied area is small; so that the productivity of sewage treatment is greatly improved, and the quality of effluent can reach the surface level IV class.

In order to solve the technical problems, the utility model is realized by the following technical scheme: the utility model provides a but town sewage treatment system of scale-up dilatation, includes thick grid pond, elevator pump, thin grid pond, aeration grit chamber, biological treatment system, second oxygen deficiency pond, MBR membrane tank, sludge concentration pond, disinfection pond, sludge dewaterer, thick grid pond is connected with thin grid pond through the elevator pump, thin grid pond passes through aeration grit chamber and links to each other with biological treatment system, biological treatment system passes through second oxygen deficiency pond and links to each other with MBR membrane tank, MBR membrane tank links to each other with disinfection pond, sludge concentration pond respectively, sludge in the sludge concentration pond partly flows back to biological treatment system, another part is handled through sludge dewaterer, MBR membrane tank includes the box, the inside of the box body is sequentially divided into a buffer area, a water distribution area, an MBR membrane pond, a backflow area and an equipment room, a water inlet is formed in the buffer area, a clean water tank is arranged above the equipment room, an MBR membrane module is arranged in the MBR membrane pond, a fan, a water producing pump, a backwashing pump, a first membrane cleaning and dosing device and a second membrane cleaning and dosing device are arranged in the equipment room, the water inlet of the water producing pump is communicated with the water producing opening of the MBR membrane module, the fan is communicated with the MBR membrane module, the top beam is used as an air pipe, the water producing pump and the backwashing pump are communicated with the clean water tank, and the backwashing pump is respectively connected with the MBR membrane module, the first membrane cleaning and dosing device and the second membrane cleaning and dosing device; the mud pump is arranged in the backflow area and connected with the mud discharging port, the backflow area is provided with a backflow port, and the clear water tank is provided with a water outlet.

As a preferable scheme, a hydrolysis acidification tank is connected between the aeration sand setting tank and the biological treatment system.

As a preferred scheme, the biological treatment system sequentially comprises an anaerobic tank, a first anoxic tank and an aerobic tank, wherein the anaerobic tank is connected with a hydrolysis acidification tank, nitrifying liquid in the aerobic tank flows back to the first anoxic tank, an aeration device is arranged at the bottom of the aerobic tank and is connected with a blower, and the aerobic tank is connected with a second anaerobic tank.

As a preferable scheme, the anaerobic tank, the first anoxic tank, the aerobic tank and the second anoxic tank are all provided with microbial fillers, and the anaerobic tank and the first anoxic tank are also provided with stirring devices.

Preferably, the aeration sand basin discharges the separated sediment through a spiral sand washer.

As a preferable scheme, the top beam is arranged at the top in the box body, an air inlet of the MBR membrane assembly is communicated with the top beam through an air inlet pipe of the MBR membrane assembly, and an air outlet of the fan is communicated with the top beam through an air outlet pipe of the fan; the water inlet of the water producing pump is communicated with the water producing port of the MBR membrane assembly through the water producing pump water inlet pipe and the membrane water producing pipe, and the water outlet of the water producing pump is communicated with the clean water tank through the water producing pump water outlet pipe; the water inlet of the backwash pump is connected with the clean water tank through a backwash pump water inlet pipe, and the water outlet of the backwash pump is connected with the membrane water production pipe through a backwash pump water outlet pipe and a backwash water pipe; the medicine outlet of the first membrane cleaning and dosing device is communicated with the backwash pump outlet pipe through a first membrane cleaning and dosing pipe, and the medicine outlet of the second membrane cleaning and dosing device is communicated with the backwash pump outlet pipe through a second membrane cleaning and dosing pipe; the sludge discharge port penetrates through the wall of the backflow area and is connected with the water outlet of the sludge discharge pump.

Preferably, the sludge concentration tank is connected with the sludge dewatering machine through a sludge pump.

Compared with the prior art, the utility model has the beneficial effects that: the integrated MBR membrane tank is adopted, so that the water-free transformation can be realized, the transformation construction content is simplified, the construction quantity is reduced, the construction cost is reduced, and the construction period is shortened; the equipment integration level is high, and the occupied area is small; so that the productivity of sewage treatment is greatly improved, and the quality of effluent can reach the surface level IV class.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic structural view of the MBR membrane tank of the present utility model.

In the figure:

Coarse grille pool, 2, lifting pump, 3, fine grille pool, 4, aeration sand basin, 41, spiral sand washer, 5, hydrolytic acidification pool, 6, biological treatment system, 61, anaerobic pool, 62, first anoxic pool, 63, aerobic pool, 631, aeration device, 632, blower, 64, stirring device, 7, second anoxic pool, 8, MBR membrane tank, 81, tank, 82, water inlet, 83, buffer zone, 84, water distribution zone, 85, MBR membrane pool, 86, reflux zone, 87, inter-equipment, 88, clean water tank, 89, top beam, 810, MBR membrane module, 811, blower, 812, water producing pump, 813, backwash pump, 814, first membrane cleaning dosing system, 815, second membrane cleaning dosing system, 816, sludge pump, 817, membrane water producing pipe, 818, water producing pump water inlet pipe, 819, water producing pump water outlet pipe, 820, backwash pump water inlet pipe, 821, backwash pump water outlet pipe, 822, membrane backwash pipe, 823, fan air outlet pipe, 824, first membrane cleaning dosing pipe, 825, second membrane cleaning dosing pipe, 826, MBR membrane module air inlet pipe, 827, sludge outlet, 828, reflux inlet, 829, water outlet, 9, disinfection tank, 10, sludge concentration tank, 101, sludge dewatering machine, 102, sludge pump.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface on … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

As shown in fig. 1 to 2, a town sewage treatment system with a scalable capacity comprises a coarse grid tank 1, a lift pump 2, a fine grid tank 3, an aeration grit chamber 4, a biological treatment system 6, a second anoxic tank 7, an MBR membrane tank 8, a sludge concentration tank 10, a disinfection tank 9 and a sludge dewatering machine 101, wherein the coarse grid tank 1 is connected with the fine grid tank 3 through the lift pump 2, the fine grid tank 3 is connected with the biological treatment system 6 through the aeration grit chamber 4, the biological treatment system 6 is connected with the MBR membrane tank 8 through the second anoxic tank 7, the MBR membrane tank 8 is respectively connected with the disinfection tank 9 and the sludge concentration tank 10, part of sludge in the sludge concentration tank 10 flows back to the biological treatment system 6, the other part of sludge is treated by the sludge dewatering machine 101 and comprises a tank 81, the inside of the box 81 is sequentially divided into a buffer zone 83, a water distribution zone 84, an MBR membrane tank 85, a backflow zone 86 and an inter-device 87 from left to right, a water inlet 82 is arranged on the buffer zone 83, a clear water tank 88 is arranged above the inter-device 87, an MBR membrane module 810 is arranged in the MBR membrane tank 85, a fan 811, a water producing pump 812, a backwash pump 813, a first membrane cleaning and dosing device 814 and a second membrane cleaning and dosing device 815 are arranged in the inter-device 87, the water inlet of the water producing pump 812 is communicated with the water producing port of the MBR membrane module 810, the fan 811 is communicated with the MBR membrane module 810, the top beam 89 is used as an air pipe, the water producing pump 812 backwash pump 813 is communicated with the clear water tank 88, and the backwash pump 813 is respectively connected with the MBR membrane module 810, the first membrane cleaning and dosing device 814 and the second membrane cleaning and dosing device 815; a sludge pump 816 is arranged in the backflow area 86, the sludge pump 816 is connected with a sludge discharge port 827, the backflow area 86 is provided with a backflow port 828, and a water outlet 829 is arranged on the clear water tank 88.

In one embodiment, a hydrolytic acidification tank 5 is connected between the aeration grit chamber 4 and the biological treatment system 6.

In one embodiment, the biological treatment system 6 sequentially comprises an anaerobic tank 61, a first anoxic tank 62 and an aerobic tank 63, wherein the anaerobic tank 61 is connected with the hydrolysis acidification tank 5, nitrified liquid in the aerobic tank 63 flows back into the first anoxic tank 62, an aeration device 631 is arranged at the bottom of the aerobic tank 63 and is connected with a blower 632, and the aerobic tank 63 is connected with the second anaerobic tank 7.

In one embodiment, the anaerobic tank 61, the first anoxic tank 62, the aerobic tank 63 and the second anoxic tank 7 are all provided with microbial fillers, and the anaerobic tank 61 and the first anoxic tank 62 are also provided with stirring devices 64.

In one embodiment, the aerated grit chamber 4 discharges separated silt through a spiral sand washer 41.

In one embodiment, the top beam 89 is disposed at the top of the interior of the tank 81, the air inlet of the MBR membrane module 810 is communicated with the top beam 89 through an MBR membrane module air inlet pipe 826, and the air outlet of the blower 811 is communicated with the top beam 89 through a blower air outlet pipe 823; the water inlet of the water producing pump 812 is communicated with the water producing port of the MBR membrane assembly 810 through a water producing pump water inlet pipe 818 and a membrane water producing pipe 817, and the water outlet of the water producing pump 813 is communicated with the clean water tank 88 through a water producing pump water outlet pipe 819; the water inlet of the backwash pump 813 is connected with the clean water tank 88 through a backwash pump water inlet pipe 820, and the water outlet of the backwash pump 813 is connected with the membrane water producing pipe 817 through a backwash pump water outlet pipe 821 and a backwash water pipe 822; the medicine outlet of the first membrane cleaning and medicine adding device 814 is communicated with the backwash pump outlet pipe 821 through a first membrane cleaning and medicine adding pipe 824, and the medicine outlet of the second membrane cleaning and medicine adding device 815 is communicated with the backwash pump outlet pipe 821 through a second membrane cleaning and medicine adding pipe 825; a sludge outlet 827 extends through the wall of the recirculation zone 86 and is connected to the water outlet of the sludge pump 816.

In one embodiment, the sludge thickening tank 10 is connected to a sludge dewatering machine 101 by a sludge pump 102.

In addition, the sewage can be conveyed among the tanks through pumps, and the description is omitted here.

The working principle is as follows:

Municipal sewage flows into a coarse grating tank 1 through a pipeline, then enters a fine grating tank 3 through a lifting pump 2 after large suspended matters are separated, small suspended matters are separated in the fine grating tank 3, then enters an aeration grit chamber 4 to remove sediment in the sewage, wherein the sediment is discharged by a spiral sand washer 41, the rest sewage enters a hydrolytic acidification tank 5 to convert macromolecular organic matters into small molecules, then flows into an anaerobic tank 61, then flows into a first anoxic tank 62 and an aerobic tank 63, nitrified liquid in the aerobic tank 63 flows back into the first anoxic tank 62, and under the action of microbial fillers in the tank, the sewage is subjected to anaerobic-anoxic-aerobic biochemical treatment and nitrified-denitrified reaction, so that organic pollutants in the sewage are degraded, the sewage and active sludge after biochemical treatment flow into an MBR membrane tank 8, and the concentration of the active sludge is greatly improved in the MBR membrane tank 8 due to the interception effect of an MBR membrane module 810 on the active sludge and the macromolecular organic matters, and the refractory matters are continuously reacted and degraded in the MBR membrane tank 8; finally, the effluent in the MBR membrane tank 8 is sterilized by ultraviolet sterilizing equipment in the sterilizing tank 9 and then discharged up to the standard, part of sludge in the MBR membrane tank 8 flows back to the anaerobic tank 61, and the rest of sludge is discharged to the sludge concentrating tank 10 for concentration treatment and then is conveyed to the sludge dehydrator 101 for dehydration treatment through the sludge pump 102.

The above is a preferred embodiment of the present utility model, and a person skilled in the art can also make alterations and modifications to the above embodiment, therefore, the present utility model is not limited to the above specific embodiment, and any obvious improvements, substitutions or modifications made by the person skilled in the art on the basis of the present utility model are all within the scope of the present utility model.

Claims

1. A town sewage treatment system capable of increasing standard and capacity is characterized in that: the system comprises a coarse grille pool, a lifting pump, a fine grille pool, an aeration grit chamber, a biological treatment system, a second anoxic pool, an MBR membrane tank, a sludge concentration pool, a disinfection pool and a sludge dehydrator, wherein the coarse grille pool is connected with the fine grille pool through the lifting pump, the fine grille pool is connected with the biological treatment system through the aeration grit chamber, the biological treatment system is connected with the MBR membrane tank through the second anoxic pool, the MBR membrane tank is respectively connected with the disinfection pool and the sludge concentration pool, a sludge part in the sludge concentration pool is refluxed to the biological treatment system, the other part of the sludge is treated by the sludge dehydrator, the MBR membrane tank comprises a box body, a buffer zone, a water distribution zone, an MBR membrane pool, a reflux zone and a device room are sequentially separated from each other in the box body, a water inlet is arranged on the buffer zone, a clean water tank is arranged above the device room, an MBR membrane module is arranged in the MBR membrane pool, a blower, a water producing pump, a top beam, a first membrane cleaning and a second membrane cleaning and dosing device are arranged in the MBR membrane tank, the device is respectively connected with the disinfection pool and the sludge concentration pool, the sludge in the sludge concentration pool, the sludge concentration pool is respectively, the sludge in the sludge concentration pool and the tank is connected with the biological treatment pool through the disinfection pool, the water tank, and the water inlet and the MBR membrane pump, and the water tank are respectively, and the water tank are respectively; the mud pump is arranged in the backflow area and connected with the mud discharging port, the backflow area is provided with a backflow port, and the clear water tank is provided with a water outlet.

2. The scalable town sewage treatment system of claim 1, wherein: and a hydrolysis acidification tank is connected between the aeration sand setting tank and the biological treatment system.

3. The scalable town sewage treatment system of claim 2, wherein: the biological treatment system sequentially comprises an anaerobic tank, a first anoxic tank and an aerobic tank, wherein the anaerobic tank is connected with the hydrolysis acidification tank, nitrifying liquid in the aerobic tank flows back to the first anoxic tank, an aeration device is arranged at the bottom of the aerobic tank and is connected with a blower, and the aerobic tank is connected with the second anaerobic tank.

4. A scalable town sewage treatment system as claimed in claim 3, wherein: microorganism fillers are arranged in the anaerobic tank, the first anoxic tank, the aerobic tank and the second anoxic tank, and stirring devices are further arranged in the anaerobic tank and the first anoxic tank.

5. The scalable town sewage treatment system of claim 1, wherein: the aeration sand basin discharges the separated sediment through a spiral sand washer.

6. The scalable town sewage treatment system of claim 1, wherein: the top beam is arranged at the top in the box body, an air inlet of the MBR membrane assembly is communicated with the top beam through an air inlet pipe of the MBR membrane assembly, and an air outlet of the fan is communicated with the top beam through an air outlet pipe of the fan; the water inlet of the water producing pump is communicated with the water producing port of the MBR membrane assembly through the water producing pump water inlet pipe and the membrane water producing pipe, and the water outlet of the water producing pump is communicated with the clean water tank through the water producing pump water outlet pipe; the water inlet of the backwash pump is connected with the clean water tank through a backwash pump water inlet pipe, and the water outlet of the backwash pump is connected with the membrane water production pipe through a backwash pump water outlet pipe and a backwash water pipe; the medicine outlet of the first membrane cleaning and dosing device is communicated with the backwash pump outlet pipe through a first membrane cleaning and dosing pipe, and the medicine outlet of the second membrane cleaning and dosing device is communicated with the backwash pump outlet pipe through a second membrane cleaning and dosing pipe; the sludge discharge port penetrates through the wall of the backflow area and is connected with the water outlet of the sludge discharge pump.

7. The scalable town sewage treatment system of claim 1, wherein: the sludge concentration tank is connected with a sludge dewatering machine through a sludge pump.