CN210012708U

CN210012708U - Sewage MBR integration treatment facility with second grade decomposes pond

Info

Publication number: CN210012708U
Application number: CN201920643494.3U
Authority: CN
Inventors: 廖雪琴
Original assignee: 廖雪琴
Current assignee: SICHUAN XINNENG WATER TREATMENT ENGINEERING Co.,Ltd.
Priority date: 2019-05-02
Filing date: 2019-05-02
Publication date: 2020-02-04
Anticipated expiration: 2029-05-02

Abstract

The utility model relates to the technical field of sewage treatment, in particular to MBR (membrane bioreactor) integrated sewage treatment equipment with a secondary decomposition tank, which comprises an adjusting tank, a pretreatment tank and an MBR reaction tank which are communicated in sequence, wherein a grid is arranged at the upper end of the adjusting tank, the adjusting tank and the pretreatment tank are communicated through a water guide pipe, suspension carriers are filled in the pretreatment tank and the MBR reaction tank, a membrane module is arranged in the MBR reaction tank, a water outlet pipe is arranged on the upper surface of the membrane module, a suction pump is arranged on the water outlet pipe, an aeration pipe is arranged below the membrane module, one end of the aeration pipe is fixedly connected with an air blower, an air nozzle is arranged at the upper end of the part of the aeration pipe, which is positioned in the MBR reaction tank, a blow-off pipe is arranged at the bottom end of the adjusting tank, the pretreatment tank and the MBR reaction tank, the number of decomposition reaction equipment is reduced integrally, and the process flow of sewage treatment is simplified.

Description

Sewage MBR integration treatment facility with second grade decomposes pond

Technical Field

The utility model relates to a sewage treatment technical field specifically is sewage MBR integration treatment facility with second grade decomposition tank.

Background

In the field of water resource recycling in sewage treatment, MBR (Membrane Bio-Reactor) is a novel water treatment technology combining a Membrane separation unit and a biological treatment unit, and the technological process of MBR sewage integrated treatment equipment is as follows: the method comprises the steps of enabling collected raw water such as urban domestic sewage and industrial wastewater to enter a regulating reservoir through a grid, intercepting suspended matters in the sewage, regulating water quantity and water quality, enabling the raw water to enter an anaerobic reservoir, enabling the raw water to sequentially pass through a facultative tank, an aerobic reservoir and a membrane biological reaction reservoir, achieving anaerobic treatment, aerobic treatment and membrane filtration treatment, and finally discharging the sewage through a water outlet pump. In the system, a fan is arranged to aerate each treatment tank, a proper oxygen content is provided, the growth of microorganisms is ensured, and a reflux pump is arranged to promote sludge in the membrane bioreactor tank to enter the anaerobic tank, so that the circular treatment is realized.

In the prior art, MBR sewage integrated treatment equipment is complex in process flow, more in composition equipment and inconvenient to control, membrane modules in the MBR sewage integrated treatment equipment are polluted by microorganisms for decomposition reaction in different degrees after running for a period of time, so that the membrane flux is reduced, the sewage treatment efficiency is reduced, and the MBR sewage integrated treatment equipment with a secondary decomposition tank is provided for solving the problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a sewage MBR integration treatment facility with second grade decomposition tank to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: sewage MBR integration treatment facility with second grade decomposition tank, including equalizing basin, preliminary treatment pond, the MBR reaction tank that communicates in proper order, the equalizing basin upper end is equipped with the grid, through the aqueduct intercommunication between equalizing basin and preliminary treatment pond, preliminary treatment pond and the MBR reaction tank, preliminary treatment pond and MBR reaction tank intussuseption are filled with the suspension carrier, be equipped with the membrane module in the MBR reaction tank, membrane module upper end surface is equipped with the outlet pipe, be equipped with the suction pump on the outlet pipe, the membrane module below is equipped with the aeration pipe, aeration pipe one end and air-blower fixed connection, and the aeration pipe is located MBR reaction tank internal portion upper end and is equipped with the air cock, equalizing basin, preliminary treatment pond, MBR reaction tank bottom.

Preferably, equalizing basin, preliminary treatment pond, MBR reaction tank are the box of sealed setting, all be equipped with immersible pump and aqueduct intercommunication in equalizing basin, the preliminary treatment pond, the aqueduct bore is greater than the suspension carrier.

Preferably, the suspension carrier is a suspension with a certain shape and structure made of plastic or composite materials, microorganisms for decomposition reaction including anaerobic bacteria, facultative bacteria and aerobic bacteria grow on the suspension carrier, and the specific gravity of the suspension carrier is close to that of water and is in a mixed state with the water.

Preferably, the filter membrane arranged on the membrane module is in a loose state.

Preferably, the air nozzles are provided in plurality, and the caliber of each air nozzle is smaller than that of the suspension carrier.

Preferably, one end of the sewage discharge pipe, which is far away from the regulating tank, the pretreatment tank and the MBR reaction tank, is provided with a valve and a sewage pumping pump.

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

1. the MBR reaction tank is filled with a suspension carrier loaded with a plurality of microorganisms, sewage enters the MBR reaction tank after being pretreated, and the sewage is subjected to anaerobic, facultative and aerobic decomposition reactions in the MBR reaction tank in sequence in a relatively sealed reaction environment, so that the number of decomposition reaction equipment is reduced integrally, and the process flow of sewage treatment is simplified;

2. when gas gets into MBR reaction tank from the air cock on the aeration pipe, MBR reaction tank internal water body formation rivers wash on the lax filter membrane of membrane module, and suspension carrier in the MBR reaction tank produces the collision with the lax filter membrane of membrane module under the effect of rivers, can both clear up the microorganism of jam on the filter membrane, has certain improvement to the membrane flux of membrane module, prolongs its overall structure clearance interval, has improved sewage treatment efficiency.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic side sectional view of a membrane module.

In the figure: the device comprises an adjusting tank 1, a pretreatment tank 2, an MBR reaction tank 3, a grid 4, a water guide pipe 5, a suspension carrier 6, a membrane module 7, a water outlet pipe 8, a suction pump 9, an aeration pipe 10, an air blower 11, an air tap 12 and a sewage discharge pipe 13.

Detailed Description

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

Referring to fig. 1, the present invention provides a technical solution: the sewage MBR integrated treatment equipment with the secondary decomposition tank comprises an adjusting tank 1, a pretreatment tank 2 and an MBR reaction tank 3 which are sequentially communicated, wherein a grid 4 is arranged at the upper end of the adjusting tank 1, sewage enters the equipment in the embodiment through the grid 4, the grid 4 can intercept suspended matters in the sewage and prevent the suspended matters from entering a reaction device, the equipment is protected, the sewage enters the MBR reaction tank 3 through the grid 4, the water quantity and the water quality of the sewage, such as water hardness, water pH value and the like, the adjusting tank 1, the pretreatment tank 2 and the MBR reaction tank 3 are communicated through a water guide pipe 5, the adjusting tank 1, the pretreatment tank 2 and the MBR reaction tank 3 are all box bodies which are arranged in a sealing way, submersible pumps are arranged in the adjusting tank 1 and the pretreatment tank 2 and communicated with the water guide pipe 5, the caliber of the water guide pipe 5 is larger than that a suspended carrier 6, the, under the effect of immersible pump, in getting into pretreatment tank 2 through aqueduct 5, sewage in pretreatment tank 2 gets into MBR reaction tank 3 under the effect of immersible pump on the same principle, and the immersible pump in pretreatment tank 2 can aspirate the sewage in MBR reaction tank 3, with the suspension carrier 6 that contains in the 3 sewage of MBR reaction tank aspirate the decomposition reaction that carries out the preliminary treatment in pretreatment tank 2.

The pretreatment tank 2 and the MBR reaction tank 3 are filled with suspension carriers 6, the suspension carriers 6 are suspended matters with certain shapes and structures, such as circular columns, steps, sheets or hollow spheres, made of plastics or composite materials, in the embodiment, the suspension carriers 6 are specifically hollow spheres, microorganisms for decomposition reaction, including anaerobic bacteria, facultative bacteria and aerobic bacteria, are grown on the suspension carriers 6, the specific gravity of the suspension carriers 6 is close to that of water and is in a mixed state with the water, sewage enters the MBR reaction tank 3 after pretreatment, each mechanism acts to enable the MBR reaction tank 3 to form a relatively sealed reaction environment, the sewage reacts with the aerobic bacteria on the suspension carriers 6 in the MBR reaction tank 3 firstly, then the facultative bacteria participate in the decomposition reaction of the sewage, the oxygen concentration in the MBR reaction tank 3 is gradually reduced in the decomposition reaction process, the activity of the anaerobic bacteria is increased, the sewage further has decomposition reaction with anaerobic bacteria, and the sewage sequentially has decomposition reaction such as anaerobic reaction, facultative reaction, aerobic reaction and the like in the MBR reaction tank 3, so that the number of decomposition reaction equipment is reduced integrally, and the process flow of sewage treatment is simplified.

A membrane module 7 is arranged in the MBR reaction tank 3, a filter membrane arranged on the membrane module 7 is in a loose state, sewage can react with microorganisms adsorbed on the filter membrane of the membrane module 7, and the sewage passes through the membrane module 7 to obtain purified water, a water outlet pipe 8 is arranged on the upper end surface of the membrane module 7, a suction pump 9 is arranged on the water outlet pipe 8, the purified water in the membrane module 7 is sucked out to the outside through the water outlet pipe 8 under the action of the suction pump 9 for recycling water, an aeration pipe 10 is arranged below the membrane module 7, one end of the aeration pipe 10 is fixedly connected with a blower 11, an air nozzle 12 is arranged at the upper end of the part of the aeration pipe 10, which is positioned in the MBR reaction tank 3, a plurality of air nozzles 12 are arranged, in the embodiment, specific setting is carried out according to the actual size of the part of the aeration pipe 10, and the aperture of the air tap 12 is smaller than the aperture of the suspension carrier 6, the air blower 11 sends air into the MBR reaction tank 3 through the air tap 12 on the aeration pipe 10, oxygen in the air is dissolved into the sewage to promote aerobic bacteria on the suspension carrier 6 to decompose the sewage, thereby purifying the sewage, the air is periodically introduced into the MBR reaction tank 3, so that the sewage in the MBR reaction tank 3 can periodically generate anaerobic, facultative and aerobic decomposition reactions under the action of microorganisms on the suspension carrier 6, when the air enters the MBR reaction tank 3 from the air tap 12 on the aeration pipe 10, water in the MBR reaction tank 3 forms water flow to flush on a loose filter membrane of the membrane component 7, the suspension carrier 6 in the MBR reaction tank 3 collides with the loose filter membrane of the membrane component 7 under the action of the water flow, and can clear up microorganisms blocked on the filter membrane, and the membrane flux of the membrane component 7 is improved to a certain extent, the cleaning interval time of the whole mechanism is prolonged, and the sewage treatment efficiency is improved.

Equalizing basin 1,

preliminary treatment pond

2, 3 bottoms in MBR reaction tank all are equipped with blow off pipe 13, blow off pipe 13 is kept away from equalizing basin 1, preliminary treatment pond 2, one of MBR reaction tank 3 serves and is equipped with the valve and takes out dirty pump, when equipment is reacting, the valve is in the normal close state, when carrying out the sewage treatment of certain time, microorganism also passes through certain life cycle in each reaction tank, when gathering certain sediment bottom the reaction tank, open the valve, take the mud that the reaction tank is low out through taking out dirty pump.

The working principle is as follows: sewage enters the adjusting tank 1 through the grating 4, sewage after being adjusted in the adjusting tank 1 is pumped to the pretreatment tank 2 to react under the action of the submersible pump, similarly, sewage in the pretreatment tank 2 is pumped into the MBR reaction tank 3, the air blower 11 is started, air enters the MBR reaction tank 3 through the air nozzle 12 on the aeration pipe 10 to react with microorganisms on the suspension carrier 6 and the membrane module 7, after sufficient reaction is carried out, the air blower 11 is closed, sewage in the equipment continues to carry out decomposition reaction, and then facultative bacteria and anaerobic bacteria on the suspension carrier 6 are gradually improved, so that corresponding reaction is carried out, the air blower 11 is started again after sufficient reaction, periodic decomposition reaction is achieved, and purified water is pumped to the outside through the water outlet pipe 8 under the action of the suction pump 9 to be recycled.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Sewage MBR integration treatment facility with second grade decomposition tank, including equalizing basin (1), preliminary treatment pond (2), MBR reaction tank (3) that communicate in proper order, its characterized in that: the upper end of the adjusting tank (1) is provided with a grid (4), the adjusting tank (1) is communicated with the pretreatment tank (2), the pretreatment tank (2) is communicated with the MBR reaction tank (3) through a water guide pipe (5), the pretreatment tank (2) and the MBR reaction tank (3) are filled with suspended carriers (6), a membrane module (7) is arranged in the MBR reaction tank (3), a water outlet pipe (8) is arranged on the upper end surface of the membrane module (7), a suction pump (9) is arranged on the water outlet pipe (8), an aeration pipe (10) is arranged below the membrane module (7), one end of the aeration pipe (10) is fixedly connected with a blower (11), and the upper end of the part of the aeration pipe (10) positioned in the MBR reaction tank (3) is provided with an air tap (12), the bottom ends of the adjusting tank (1), the pretreatment tank (2) and the MBR reaction tank (3) are all provided with a sewage discharge pipe (13).

2. The MBR-integrated sewage treatment device with the secondary decomposition tank as claimed in claim 1, wherein: equalizing basin (1), preliminary treatment pond (2), MBR reaction tank (3) are the box of sealed setting, all be equipped with immersible pump and aqueduct (5) intercommunication in equalizing basin (1), preliminary treatment pond (2), aqueduct (5) bore is greater than suspension carrier (6).

3. The MBR-integrated sewage treatment device with the secondary decomposition tank as claimed in claim 1, wherein: the suspended carrier (6) is a suspended substance which is made of plastic or composite materials and has a certain shape structure, microorganisms for decomposition reaction including anaerobic bacteria, facultative bacteria and aerobic bacteria grow on the suspended carrier (6), and the specific gravity of the suspended carrier (6) is close to that of water and is in a mixed state with the water.

4. The MBR-integrated sewage treatment device with the secondary decomposition tank as claimed in claim 1, wherein: the filter membrane arranged on the membrane component (7) is in a loose state.

5. The MBR-integrated sewage treatment device with the secondary decomposition tank as claimed in claim 1, wherein: the number of the air nozzles (12) is multiple, and the caliber of the air nozzles (12) is smaller than that of the suspension carrier (6).

6. The MBR-integrated sewage treatment device with the secondary decomposition tank as claimed in claim 1, wherein: one of the sewage discharge pipe (13) far away from the adjusting tank (1), the pretreatment tank (2) and the MBR reaction tank (3) is provided with a valve and a sewage pump.