CN211734118U

CN211734118U - Automatic MBR sewage treatment system of leading prefiltering

Info

Publication number: CN211734118U
Application number: CN202020090997.5U
Authority: CN
Inventors: 何婷; 吴谦; 吴翔; 杨声强; 陈兵兵
Original assignee: Anhui Huanghe Water-Resource Polytron Technologies Inc
Current assignee: Anhui Huanghe Water-Resource Polytron Technologies Inc
Priority date: 2020-01-15
Filing date: 2020-01-15
Publication date: 2020-10-23
Anticipated expiration: 2030-01-15

Abstract

The utility model discloses an automatic MBR sewage treatment system of leading prefiltration belongs to sewage treatment technical field. The problem of MBR device treatment sewage easily takes place to block up and life is lower among the prior art, the utility model provides a leading automatic MBR sewage treatment system of prefiltering, it is including the good oxygen pond that sets gradually, MBR pond and clean water basin, good oxygen pond and advance water piping connection, still include filter equipment and PLC controller, filter equipment sets up between inlet tube and good oxygen pond, and filter equipment, good oxygen pond, MBR pond and the interior monitoring element in the clean water basin are equallyd divide and do not are connected with the PLC controller electricity. The utility model arranges the filtering device in front of the aerobic tank to intercept and remove solid particles, thereby avoiding the blockage of the MBR membrane component in the follow-up MBR tank and effectively prolonging the service life of the MBR membrane component; and the monitoring elements in the filtering device, the aerobic tank, the MBR tank and the clear water tank are electrically connected with the PLC, so that the automatic treatment of the whole process is realized, the investment of labor cost is reduced, and the management is convenient.

Description

Automatic MBR sewage treatment system of leading prefiltering

Technical Field

The utility model belongs to the technical field of sewage treatment, more specifically say, relate to an automatic MBR sewage treatment system of leading prefiltration.

Background

With the rapid development of social economy and the acceleration of urbanization process, the discharge amount of domestic sewage and agricultural non-point source pollution is increasing day by day, a large amount of pollutants directly enter rivers and lakes to destroy the original ecological system, so that the water body is black and odorous, and fishes and shrimps are out of sight. The polluted water body not only loses the resource function and the use value, but also seriously damages the living environment of residents and even harms the physical and psychological health of the residents. At present, the MBR device bypass treatment process is one of the main methods for purifying water body pollution to treat the black and odorous problems of rivers and lakes. The MBR device has the advantages of high treatment efficiency, high and stable effluent quality, long sludge age, small excess sludge yield, stable system operation, small occupied area, no site limitation and the like. Discover behind the practical application of water bypass purification, pollutants such as COD, BOD, ammonia nitrogen in the water can effectually be got rid of to the MBR technology of simplicity, nevertheless because of lack the preliminary treatment and arrange the mud system, lead to the unable effective discharge of solid particulate matter in the sewage, easily cause the jam of MBR membrane after a large amount of accumulations, influence the device normal operating, reduce device life.

In order to solve the problems, for example, chinese patent application No. 201420497819, published as 2015, 1, 21, discloses an MBR device for treating river wastewater in a circulating manner, which comprises an anoxic zone at a water inlet and an MBR unit, wherein the MBR unit consists of membrane modules for activated sludge growth, a microporous aerator is arranged below the membrane modules, the anoxic zone automatically flows into the MBR unit, the MBR unit system consists of activated sludge and membrane modules, the membrane modules are of a drawable membrane or flat membrane structure, the MBR unit is connected with an aerobic zone, and a return pipe connected to the anoxic zone is arranged from the aerobic zone. The disadvantages of the patent are that: the MBR device is lack of a pretreatment and sludge discharge system, so that solid particles in sewage cannot be effectively discharged, and the MBR membrane is easy to block after being accumulated in a large amount, thereby affecting the normal operation of the device and reducing the service life of the device; the automatic control system of the MBR device only automatically controls the equipment inside the MBR device, cannot be remotely controlled, still needs technical personnel to operate on duty, deals with various running conditions of the equipment and increases personnel investment.

For another example, chinese patent application No. CN201821225152.1, published as 2019, 3 and 26, discloses an automatic MBR membrane sewage treatment device, and relates to the technical field of sewage treatment equipment. The device comprises an MBR membrane box, a clear water box and a backwashing water box, wherein a hollow fiber membrane assembly is arranged in the MBR membrane box, and the hollow fiber membrane assembly is communicated with the clear water box through a first pipeline; the backwash water tank is communicated with the hollow fiber membrane component through a second pipeline; the device also comprises a liquid level meter and a PLC control device, wherein the liquid level meter is arranged in the MBR membrane box and is connected with the PLC control device, so that the PLC control device controls the opening and/or closing of the first pipeline and the second pipeline based on data monitored by the liquid level meter; still be provided with the blow off pipe in the MBR membrane case, the bottom half of MBR membrane case is the toper structure, and the blow off pipe sets up in the apex department of toper structure. The disadvantages of the patent are that: although the automation degree of whole device has been improved, the MBR membrane lacks sewage pipes, leads to the unable effective discharge of solid particulate matter in the sewage.

SUMMERY OF THE UTILITY MODEL

1. Problems to be solved

To the problem that MBR device treatment sewage easily takes place to block up and life is lower among the prior art, the utility model provides an automatic MBR sewage treatment system of leading prefiltration. The utility model arranges the filtering device in front of the aerobic tank to intercept and remove solid particles, thereby avoiding the blockage of the MBR membrane component in the follow-up MBR tank and effectively prolonging the service life of the MBR membrane component; and the monitoring elements in the filtering device, the aerobic tank, the MBR tank and the clear water tank are electrically connected with the PLC, so that the automatic treatment of the whole process is realized, the investment of labor cost is reduced, and the management is convenient.

2. Technical scheme

In order to solve the above problems, the utility model adopts the following technical proposal.

The utility model provides a leading automatic MBR sewage treatment system of prefiltering, is including the good oxygen pond, MBR pond and the clean water basin that set gradually, good oxygen pond and advance water piping connection, still includes filter equipment and PLC controller, and filter equipment sets up between inlet tube and good oxygen pond, and filter equipment, good oxygen pond, MBR pond and the interior monitoring element of clean water basin are equallyd divide and are do not connected with the PLC controller electricity.

Furthermore, the filtering device comprises a water collecting tank connected with the water inlet pipe, a steel wire mesh cage is arranged below the water collecting tank, a sludge discharge pipe is arranged below the steel wire mesh cage, aerated block concrete is filled in the steel wire mesh cage, and biological filler is arranged in the aerated block concrete.

Furthermore, an upper supporting beam and a lower supporting beam are respectively arranged on the upper part and the lower part of the steel wire mesh cage.

Furthermore, a lifting lug is arranged at the top of the steel wire mesh cage.

Furthermore, a plurality of elastic membrane filaments in the MBR membrane assembly in the MBR tank are uniformly arranged in multiple rows, a gap is reserved between two adjacent rows of elastic membrane filaments, and a gap is reserved between two adjacent elastic membrane filaments in each row of elastic membrane filaments.

Furthermore, the elastic membrane filaments are made of polyvinylidene fluoride, polyvinyl chloride, polypropylene, polysulfone or polytetrafluoroethylene.

Furthermore, a return pipe is arranged between the MBR tank and the aerobic tank.

Furthermore, a sludge discharge pipe is arranged at the bottom of the aerobic tank.

Further, the monitoring elements include a water flow monitor, a water level monitor, a water quality monitor and a pressure monitor.

Further, the water level monitor is an ultrasonic liquid level meter.

3. Advantageous effects

Compared with the prior art, the beneficial effects of the utility model are that:

(1) the utility model discloses a be provided with filter equipment before the good oxygen pond, filter equipment and advance water piping connection, carry out an interception to the water at first and get rid of the solid particle effect, avoid the jam of MBR membrane module in the follow-up MBR pond, and the monitoring element in filter equipment, good oxygen pond, MBR pond and the clear water pond all is connected with the PLC controller electricity, realize the automated processing of whole process, reduce the input of human cost and convenient management;

(2) the filtering device comprises a water collecting tank, the water collecting tank is connected with a water inlet pipe to realize the influx of water flow, the water flow flows into a steel wire mesh cage through the water collecting tank, aerated block concrete is filled in the steel wire mesh cage, biological filler is arranged in the aerated block concrete, and a large number of bubble holes are arranged on the surface and inside of the aerated block concrete, so that the specific surface area of the biological filler is greatly improved, and a proper environment is provided for the attachment growth of microorganisms, thereby reducing the BOD in the water body; meanwhile, the aerated block concrete material has the function of adsorbing phosphorus, so that the total phosphorus content in sewage can be reduced, and the total phosphorus removal rate of the whole system is improved;

(3) the upper and lower supporting beams are respectively arranged above and below the steel wire net cage, and the upper and lower supporting beams play a role in fixing the steel wire net cage, so that the steel wire net cage is prevented from being interfered by external environment and cannot normally work; the lifting lugs are arranged at the top of the steel wire mesh cage, so that the steel wire mesh cage is convenient to maintain, replace and transport; the steel wire mesh cage is made of stainless steel, so that the corrosion resistance is high, and the service life of the whole steel wire mesh cage is prolonged;

(4) the utility model discloses divide into the multirow align to arrange with a plurality of elastic membrane silks in the MBR membrane module, it is gapped between two adjacent rows of elastic membrane silks, it is gapped between two adjacent elastic membrane silks in every row of elastic membrane silk, rivers disturbance makes every membrane silk surface can both obtain effectual washing away in sewage treatment in-process, the deposit rate of pollutant on membrane silk surface has greatly been reduced, avoid the membrane silk to break and intertwine, guaranteed that the MBR membrane module can be in high-efficient filtration state for a long time in the operation process;

(5) the utility model is provided with the return pipe between the MBR tank and the aerobic tank, when the water flow reaching the standard after the treatment of the MBR tank flows into the clean water tank, the water which does not reach the standard flows into the aerobic tank through the return pipe to be recycled, thereby ensuring the water quality without wasting water resources and recycling the water resources; the sludge discharge pipe is arranged at the bottom of the aerobic tank, so that sludge accumulated at the bottom of the aerobic tank can be discharged in time, and the blockage in the MBR tank is avoided;

(6) monitoring component include discharge monitoring meter, water level monitoring meter, water quality monitoring meter and pressure monitoring meter, monitor rivers from a plurality of aspects, guarantee that whole sewage treatment process can go on smoothly, and water level monitoring meter is the ultrasonic wave level gauge, simple structure, it is accurate and less by external disturbance to measure the liquid level, improves the accuracy performance of whole process.

Drawings

FIG. 1 is a process flow diagram of the present invention;

fig. 2 is a schematic plan view of the present invention;

fig. 3 is a schematic sectional view of the present invention.

In the figure: 1. a water inlet pipe; 2. a sludge discharge pipe; 3. a filtration device; 4. an aerobic tank; 5. an MBR membrane module; 6. an MBR tank; 7. a clean water tank; 8. a device room; 9. a water outlet pipe; 10. a lower layer support beam; 11. a wire mesh cage; 12. an upper layer support beam; 13. a water collection tank; 14. a PLC controller; 15. air-added block concrete.

Detailed Description

The invention will be further described with reference to specific embodiments and drawings.

Example 1

As shown in fig. 1, 2 and 3, the automatic MBR sewage treatment system with pre-filtering function comprises an aerobic tank 4, an MBR tank 6 and a clean water tank 7 which are sequentially arranged, wherein the aerobic tank 4 is connected with a water inlet pipe 1, the system also comprises a filtering device 3 and a PLC (programmable logic controller) 14, the filtering device 3 is arranged between the water inlet pipe 1 and the aerobic tank 4, and monitoring elements in the filtering device 3, the aerobic tank 4, the MBR tank 6 and the clean water tank 7 are respectively and electrically connected with the PLC 14; specifically, the filtering device 3 comprises a water collecting tank 13 connected with the water inlet pipe 1, a steel wire mesh cage 11 is arranged below the water collecting tank 13, specifically, the steel wire mesh cage 11 is made of stainless steel and has high corrosion resistance, and the steel wire mesh cage 11 is formed by using a steel bar framework as edges and using a stainless steel wire mesh as a surface; the water flow flows into the steel wire net cage 11 through the water collecting tank 13, the sludge discharge pipe 2 is arranged below the steel wire net cage 11, the air-added block concrete 15 is filled in the steel wire net cage 11, the biological filler is arranged in the air-added block concrete 15, the air-added block concrete 15 is cuboid, is similar to a brick in size, is a novel light porous material, and has a rough surface, multiple micropores, developed internal pores and a porosity of 72%; the specific surface area is large, the biological filler is arranged in the holes of the aerated block concrete 15, so that a large amount of microorganisms can be attached, grow and propagate, and the membrane hanging efficiency is improved, the specific surface area of the biological filler is greatly improved due to the large number of bubble holes on the surface and in the aerated block concrete 15, a proper environment is provided for the attachment and growth of the microorganisms, sewage is filtered by the aerated block concrete 15, solid particles are intercepted and removed, and the subsequent blockage of the MBR membrane module 5 in the MBR tank 6 is avoided; the attached microorganisms absorb and facultative hydrolyze organic nutrients, degrade organic matters or convert the organic matters into microorganism components, thereby reducing BOD in the water body; meanwhile, the aerated block concrete 15 has a phosphorus adsorption function, so that the total phosphorus content in sewage can be reduced, and the total phosphorus removal rate of the whole system is improved; and be provided with sludge discharge pipe 2 below wire mesh cage 11, conveniently discharge the solid particle thing in the sewage, avoid the solid particle thing in the sewage to bring into subsequent MBR pond 6 and cause the jam.

PLC controller 14 set up in equipment room 8, PLC controller 14 receives filter equipment 3, good oxygen pond 4, the data message that monitoring element in MBR pond 6 and the clean water basin 7 sent transmits for control system, and then control system supervises and shows it, whole control system can real time monitoring operation conditions, including filter equipment 3, good oxygen pond 4, the magnitude of voltage of MBR pond 6 and clean water basin 7 during operation, the current value, and relevant work relevant parameter with open the stop situation, convenient operation management, reduce personnel's investment.

The utility model arranges the filtering device 3 in front of the aerobic tank 4 to intercept and remove solid particles, thereby avoiding the blockage of the MBR membrane component 5 in the subsequent MBR tank 6 and effectively prolonging the service life of the MBR membrane component 5; and the monitoring elements in the filtering device 3, the aerobic tank 4, the MBR tank 6 and the clean water tank 7 are electrically connected with the PLC 14, so that the automatic treatment of the whole process is realized, the investment of labor cost is reduced, and the management is convenient.

Example 2

Basically, as in embodiment 1, preferably, the upper and lower support beams 12 and 10 are respectively disposed on the wire mesh cage 11, and the upper support beam 12 and the lower support beam 10 fix the wire mesh cage 11, so as to prevent the wire mesh cage 11 from shaking due to the interference of the external environment and failing to work normally; furthermore, the lifting lugs are arranged at the top of the steel wire mesh cage 11, so that the steel wire mesh cage 11 is convenient to maintain, replace and transport; the plurality of elastic membrane filaments in the MBR membrane assembly 5 in the MBR tank 6 are uniformly arranged in a plurality of rows, a gap is reserved between two adjacent rows of elastic membrane filaments, and a gap is reserved between two adjacent elastic membrane filaments in each row of elastic membrane filaments; in the sewage treatment process, the water flow disturbance enables the surface of each membrane wire to be effectively washed away, the deposition rate of pollutants on the surface of the membrane wire is greatly reduced, the membrane wires are prevented from being broken and intertwined, and the MBR membrane component 5 is ensured to be in a high-efficiency filtering state for a long time in the operation process; more specifically, the elastic membrane wire is made of polyvinylidene fluoride, polyvinyl chloride, polypropylene, polysulfone or polytetrafluoroethylene, and the elastic membrane wire is strong in corrosion resistance and good in ageing resistance, so that the elastic membrane wire is long in service life.

Example 3

Basically as in embodiment 2, preferably, a return pipe is arranged between the MBR tank 6 and the aerobic tank 4, and as water flows into the MBR tank 6 through the aerobic tank 4, the MBR membrane module 5 treats the water, and when the water quality in the MBR tank 6 reaches a certain standard, the water enters the clean water tank 7 and is discharged through a water outlet pipe 9 on the clean water tank 7 for use or storage; if the water quality does not reach the standard, the water enters the aerobic tank 4 through the return pipe to be recycled, so that the water resource is not wasted while the water quality is ensured, the water resource is recycled, and certain cost is saved for enterprises; and the bottom of the aerobic tank 4 is provided with a sludge discharge pipe 2, so that the sludge accumulated at the bottom of the aerobic tank 4 can be discharged in time, and the blockage in the MBR tank 6 is avoided. Specifically, in this embodiment, the monitoring element includes a water flow monitor, a water level monitor, a water quality monitor and a pressure monitor, and monitors water flow from multiple aspects to ensure that the whole sewage treatment process can be smoothly performed; and preferably, the water level monitor is an ultrasonic liquid level meter, the structure is simple, the liquid level is measured accurately and is less interfered by the outside, and the accuracy of the whole process is improved.

The examples of the utility model are only right the utility model discloses a preferred embodiment describes, and not right the utility model discloses design and scope are injectd, do not deviate from the utility model discloses under the prerequisite of design idea, the field engineering technical personnel are right the utility model discloses a various deformation and improvement that technical scheme made all should fall into the protection scope of the utility model.

Claims

1. The utility model provides a leading automatic MBR sewage treatment system of prefiltering, is connected its characterized in that including good oxygen pond (4), MBR pond (6) and clean water basin (7) that set gradually, good oxygen pond (4) and inlet tube (1): the device is characterized by further comprising a filtering device (3) and a PLC (programmable logic controller) (14), wherein the filtering device (3) is arranged between the water inlet pipe (1) and the aerobic tank (4), and monitoring elements in the filtering device (3), the aerobic tank (4), the MBR tank (6) and the clean water tank (7) are electrically connected with the PLC (14) respectively.

2. The automated MBR sewage treatment system of claim 1, wherein: the filter device (3) comprises a water collecting tank (13) connected with the water inlet pipe (1), a steel wire net cage (11) is arranged below the water collecting tank (13), a sludge discharge pipe (2) is arranged below the steel wire net cage (11), aerated block concrete (15) is filled in the steel wire net cage (11), and biological filler is arranged in the aerated block concrete (15).

3. The automated MBR sewage treatment system of claim 2, wherein: an upper-layer supporting beam (12) and a lower-layer supporting beam (10) are respectively arranged on the upper and lower sides of the steel wire mesh cage (11).

4. The automated MBR sewage treatment system of claim 3, wherein: the top of the wire mesh cage (11) is provided with a lifting lug.

5. The automated MBR sewage treatment system of claim 1, wherein: a plurality of elastic membrane filaments in an MBR membrane assembly (5) in the MBR tank (6) are uniformly arranged in multiple rows, a gap is reserved between two adjacent rows of elastic membrane filaments, and a gap is reserved between two adjacent elastic membrane filaments in each row of elastic membrane filaments.

6. The automated MBR sewage treatment system of claim 5, wherein: the elastic membrane filaments are made of polyvinylidene fluoride, polyvinyl chloride, polypropylene, polysulfone or polytetrafluoroethylene.

7. The automated MBR sewage treatment system of claim 1, wherein: a return pipe is arranged between the MBR tank (6) and the aerobic tank (4).

8. The automated MBR sewage treatment system of claim 7, wherein: the bottom of the aerobic tank (4) is provided with a sludge discharge pipe (2).

9. The automated MBR sewage treatment system of claim 1, wherein: the monitoring elements comprise a water flow monitoring meter, a water level monitoring meter, a water quality monitoring meter and a pressure monitoring meter.

10. The automated MBR sewage treatment system of claim 9, wherein: the water level monitor is an ultrasonic liquid level meter.