CN215516818U

CN215516818U - Dull and stereotyped membrane module of MBR of processing sewage

Info

Publication number: CN215516818U
Application number: CN202121576293.XU
Authority: CN
Inventors: 夏海凉; 黄炜
Original assignee: Yangtze Optical Fibre and Cable Co Ltd
Current assignee: Yangtze Optical Fibre and Cable Co Ltd
Priority date: 2021-07-12
Filing date: 2021-07-12
Publication date: 2022-01-14
Anticipated expiration: 2031-07-12

Abstract

The utility model provides an MBR flat membrane assembly for treating sewage, which comprises a shell with an opening at the bottom, a collecting pipe arranged at the top of the shell, an MBR flat membrane arranged in the shell and a support plate with holes, wherein the bottom of the shell is provided with support legs, the top of the MBR flat membrane is provided with a flow guide water outlet pipe, the flow guide water outlet pipe penetrates through the top of the shell and is fixedly connected and communicated with the collecting pipe, the side edge of the support plate with holes is fixedly connected with the inner wall of the lower part of the shell, and the collecting pipe is provided with a water outlet pipe. The MBR flat membrane component has the advantages of simple structure, strong flow conductivity and good treatment effect, and after the clear water treated by the MBR flat membrane component is disinfected and sterilized, the water quality can meet the requirements of GB19923-2005 water quality for municipal sewage recycling industry, can be used as a water source in different places of various industries, and relieves the water resource crisis to a certain extent.

Description

Dull and stereotyped membrane module of MBR of processing sewage

Technical Field

The utility model belongs to the technical field of sewage treatment, and relates to a sewage treatment device.

Background

Generally, urban domestic sewage is divided into two types, the first type is industrial sewage, the second type is domestic sewage, the sewage is collected to a specified place through an urban pipeline and is subjected to centralized sewage treatment, and therefore the sewage can reach the specified standard of China.

There are many ways of treating sewage, among which, MBR membrane organisms have high activated sludge concentration, which can increase the organic load of biological treatment, and thus are widely used in sewage treatment. The utility model discloses a utility model patent that grant bulletin number is CN212640233U provides a MBR membrane treatment sewage purification device, including the box, be equipped with inlet, drain and drain pipe on the box, the drain pipe top is equipped with the MBR membrane group with box fixed connection, box fixedly connected with stirring subassembly, stirring subassembly below is equipped with the filter membrane with box fixed connection, filter membrane one end and drain parallel and level, the drain is connected with seal assembly, and the device has realized the primary purification treatment of sewage, has reduced the pressure that the MBR membrane group purified through setting up the stirring subassembly, but the device structure is comparatively complicated, and is not applicable to the continuous processing of a large amount of sewage.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the background art, the utility model provides an MBR flat membrane module for treating sewage.

This dull and stereotyped membrane module of MBR includes bottom open-ended shell, sets up in the pressure manifold at shell top and sets up in the dull and stereotyped membrane of MBR of shell inside, the bottom of shell be provided with the supporting legs, the top of the dull and stereotyped membrane of MBR be provided with the water conservancy diversion outlet pipe, the water conservancy diversion outlet pipe pass the top and the pressure manifold fixed connection and the intercommunication of shell, the pressure manifold on be provided with the outlet pipe.

The MBR flat membrane comprises a supporting frame, a filter membrane, a flow guide net and a flow guide water outlet pipe, wherein the supporting frame comprises a rectangular frame formed by sequentially surrounding four supporting plates, the flow guide net is fixedly arranged at the opening of the supporting frame, and the filter membrane is arranged on the outer side of the flow guide net.

The MBR flat membrane further comprises a flow guide pipe, wherein the flow guide pipe is arranged on the inner sides of the two flow guide nets, and the outlet of the flow guide pipe is communicated with the flow guide water outlet pipe.

The MBR flat membrane module also comprises a support plate with holes, and the side edge of the support plate with holes is fixedly connected with the inner wall of the lower part of the shell.

Furthermore, the honeycomb duct can be formed by a plurality of pipelines which are staggered, a plurality of guide holes can be arranged on the plurality of pipelines of the honeycomb duct, and outlets which are staggered and converged by the plurality of pipelines are communicated with the guide water outlet pipe so as to enhance the guide effect.

The MBR flat membrane module can be placed in an MBR tank for treating sewage, and the setting number of the MBR flat membrane modules in the MBR tank can be determined according to the sewage treatment capacity. The supporting legs of dull and stereotyped membrane module accessible bottom of MBR stands in the MBR pond, in sewage treatment's actual operation in-process, the sewage that gets into in the MBR pond has handled great suspended solid and floater through anterior segment process, accessible intake pipe makes the tiny particle such as impurity in the sewage suspend and is unlikely to the deposit toward the MBR pond air of drum-in, thereby the dull and stereotyped membrane module of MBR handles the air in the MBR pond and the dull and stereotyped membrane of sewage mixture through its inside multiunit MBR that sets up, clear water that obtains after finishing handles collects to the pressure manifold via the water conservancy diversion outlet pipe, the rethread is toward the outlet pipe, take out the clear water through membrane outlet pump and carry out disinfection and sterilization on next step, get the sludge water and stay in the MBR pond after the dull and stereotyped membrane processing of MBR finishes, can arrange next processing procedure and handle. The water outlet pipe can also be communicated to a cleaning solution conveying pipe, and the MBR flat membrane, the MBR flat membrane module and the MBR tank can be cleaned by introducing cleaning solution. In addition, the lower part of the interior of the MBR flat membrane component is also provided with the perforated support plate, so that the air and sewage mixture can flow into the interior of the MBR flat membrane component through the perforated support plate below the MBR flat membrane component, the perforated support plate not only can play a role of supporting the shell of the MBR flat membrane component, but also relieves sudden strong impact of the air and sewage mixture on the MBR flat membrane to a certain extent through the porous structure, and protects the MBR flat membrane; in addition, the structural design of the MBR flat membrane enables air and sewage mixture to be treated through the outermost filter membrane to obtain clear water, the clear water is discharged into the interior of the MBR flat membrane through the flow guide net, then the clear water is collected to the flow guide water outlet pipe through the flow guide pipe in the MBR flat membrane, the flow guide process of the clear water after the filter membrane treatment is very smooth, and the flow guide net is arranged to further support the filter membrane.

In the sewage treatment process, the MBR flat membrane module is mainly used for removing organic matters and NH from sewage₃The nitrification process of-N, MBR flat membrane module namely flat membrane-microorganism reactor, under the aerobic condition after letting in air, the microorganism is mainly divided into two stages of adsorption and stabilization for removing organic matter, in the adsorption stage, the organic matter in the sewage is mainly transferred to the activated sludge, because the activated sludge has huge surface area, and the surface contains viscous substances of polyose, in the stabilization stage, the process that the organic matter transferred to the activated sludge is utilized by the microorganism is mainly, the process of adsorption is short generally, and the stabilization stage is longer; at the same time of removing the chemical oxygen demand COD in the sewage, nitrifying bacteria can remove NH in the sewage under aerobic conditions₃Oxidation of-N to NO₂N and then further oxidized to NO₃N, removing ammonia nitrogen; after the microorganism finishes the series of processes of organic matter degradation and ammonia nitrogen removal, the flat membrane-bioreactor realizes mud-water separation and ensures the quality of the effluent; meanwhile, the absolute interception of the membrane is used, so that the whole reactor can maintain higher sludge concentration, and the whole process has strong water impact load resistance, high volume load and small occupied area.

Compared with the prior art, the MBR flat membrane module has the advantages of simple structure, strong flow conductivity and good sewage treatment effect, and after the clear water treated by the MBR flat membrane module is disinfected and sterilized, the water quality can not only reach the first-class A standard of GB18918-2002 discharge Standard of pollutants for municipal wastewater treatment plant, but also reach the requirement of GB19923-2005 Water quality for municipal wastewater reclamation and utilization industry, can be used as a water source in different places of various industries, and relieves the water resource crisis to a certain extent.

Drawings

Fig. 1 is an overall schematic diagram of an MBR flat membrane module.

FIG. 2 is a schematic diagram of the internal structure of the MBR flat-plate membrane module.

FIG. 3 is a schematic structural diagram of an MBR flat sheet membrane.

Wherein: 1-MBR flat membrane module; 1.1-a housing; 1.2-supporting feet; 1.3-support plate with holes; 1.4-MBR flat membrane; 1.41-diversion outlet pipe; 1.42-honeycomb duct; 1.43-support frame; 1.44-flow guide net; 1.45-filtration membrane; 1.5-collecting pipe; and 2-water outlet pipe.

Detailed Description

The embodiments of the present invention will be described in detail with reference to the accompanying drawings, but the embodiments are not limited to the utility model, and the advantages of the utility model will be understood more clearly by the description. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the utility model. The positional relationships described in the embodiments are all the same as those shown in the drawings, and other portions not described in detail in the embodiments are all the related art.

The integral structure of the MBR flat membrane module 1 is shown in FIG. 1, the outer part is a rectangular shell 1.1, the bottom of the shell 1.1 is open, the bottommost part of the shell 1.1 is provided with a supporting leg 1.2, and the supporting leg 1.2 can stand the whole MBR flat membrane module 1 in an MBR tank; the top of the shell 1.1 is fixed with a collecting pipe 1.5, and the collecting pipe 1.5 is provided with a water outlet pipe 2 communicated with the collecting pipe.

The internal structure of the MBR flat membrane module 5 is shown in fig. 2, a plurality of groups of MBR flat membrane modules 1.4 are arranged above the inside of the shell 1.1, and a flow-guiding water outlet pipe 1.41 is arranged at the top of the MBR flat membrane modules 1.4, as can be seen from fig. 1 and 2, the flow-guiding water outlet pipe 1.41 is arc-shaped, the flow-guiding water outlet pipe 1.41 penetrates through the top of the shell 1.1 to be communicated with the collecting pipe 1.5, and the flow-guiding water outlet pipe 1.41 can be fixedly connected with the collecting pipe 1.5, so that the MBR flat membrane modules 1.4 are fixedly connected with the collecting pipe 1.5; a supporting plate 1.3 with holes fixedly connected with the inner wall of the shell 1.1 is arranged below the inner part of the shell 1.1.

The structure of the MBR flat membrane 1.4 is shown in FIG. 3, the MBR flat membrane is of a rectangular structure as a whole, the support frame 1.43 is of a square structure with two open sides, the guide nets 1.44 are installed and fixed at the two open sides of the support frame 1.43, so that the support frame 1.43 and the guide nets 1.44 form a hollow square structure, the filter membrane 1.45 is installed at the outer side of the guide nets 1.44, the guide pipes 1.42 are arranged inside the two guide nets 1.44, namely the MBR flat membrane 1.4, and the outlets of the guide pipes 1.42 are communicated with the guide water outlet pipe 1.41. The flow guide pipe 1.42 can be formed by interlacing a plurality of pipelines, a plurality of flow guide holes can be arranged on the plurality of pipelines of the flow guide pipe 1.42, and the outlet of the plurality of pipelines which are interlaced and converged is communicated with the flow guide water outlet pipe 1.41 so as to enhance the flow guide effect.

The MBR flat membrane module 1 can be vertically arranged in an MBR tank for treating sewage through supporting legs 1.2 at the bottom, in the actual operation process of sewage treatment, the sewage entering the MBR tank is treated to remove larger suspended matters and floating matters through a front-stage process, so that the MBR flat membrane module 1 can be better protected, and the sewage can be further regulated before entering the MBR tank to homogenize the water quality and the water quantity of the sewage; air is blown into the MBR tank through the air inlet pipe, so that small particles such as impurities, microorganisms and the like in sewage are suspended and are not deposited, and therefore, the air and sewage mixture flows into the MBR flat plate membrane module 1 through the perforated support plate 1.3 below the inner part of the MBR flat plate membrane module 1, and the sudden strong impact of the air and sewage mixture on the MBR flat plate membrane is relieved to a certain extent by the porous structure of the perforated support plate 1.3; the air and sewage mixture is treated through a plurality of groups of MBR flat membrane 1.4 above the inside of the MBR flat membrane module 1, specifically, the air and sewage mixture is treated through a filter membrane 1.45, clear water obtained by treatment is discharged into the MBR flat membrane 1.4 through a flow guide net 1.44, then is collected to a flow guide water outlet pipe 1.41 through a flow guide pipe 1.42, then is collected to a collecting pipe 1.5 at the top of the MBR flat membrane module 1 from the flow guide water outlet pipe 1.41, and then is conveyed to a water outlet pipe 2, clear water obtained by treatment is pumped out through a membrane water outlet pump for next disinfection and sterilization treatment, sludge water obtained after sewage treatment by the MBR flat membrane module 1 is reserved in an MBR tank, and can be discharged to the next treatment process for treatment.

In addition, the water outlet pipe 2 can also be communicated to a cleaning liquid conveying pipe, and the MBR flat membrane 1.4, the MBR flat membrane module 1 and the MBR tank can be cleaned by introducing cleaning liquid.

The MBR flat membrane module 1, namely a flat membrane-microorganism reactor, mainly comprises two stages of adsorption and stabilization for removing organic matters by microorganisms under the aerobic condition after air is introduced, in the adsorption stage, the organic matters in sewage are mainly transferred to activated sludge, which is caused by the fact that the activated sludge has huge surface area and the surface contains polysaccharide viscous substances, in the stabilization stage, the process that the organic matters transferred to the activated sludge are utilized by the microorganisms is mainly carried out, the adsorption process is short generally, and the stabilization stage is long; at the same time of removing the chemical oxygen demand COD in the sewage, nitrifying bacteria can remove NH in the sewage under aerobic conditions₃Oxidation of-N to NO₂N and then further oxidized to NO₃N, removing ammonia nitrogen; after the microorganism finishes the series of processes of organic matter degradation and ammonia nitrogen removal, the flat membrane-bioreactor realizes mud-water separation and ensures the quality of the effluent.

The MBR flat membrane module 1 is adopted to treat a batch of sewage, a third party unit is entrusted to carry out continuous three-day sampling detection on the water quality after disinfection and sterilization, the detection project refers to GB/T19923-.

TABLE 1 third-party detection result of effluent quality

Note: "ND" means that the result was not detected or the detection value was below the detection limit of the method.

After the clear water obtained by treating the sewage by adopting the MBR flat-plate membrane module 1 is disinfected and sterilized, the water quality reaches the requirement of GB19923-2005 water quality for municipal sewage recycling industry, and the MBR flat-plate membrane module can be used as a water source in different places of various industries.

The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings and specific examples, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

Claims

1. The utility model provides a dull and stereotyped membrane module of MBR of processing sewage which characterized in that: dull and stereotyped membrane module of MBR (1) include bottom open-ended shell (1.1), set up in pressure manifold (1.5) at shell (1.1) top and set up in dull and stereotyped membrane of MBR (1.4) of shell (1.1) inside, the bottom of shell (1.1) be provided with supporting legs (1.2), the top of dull and stereotyped membrane of MBR (1.4) be provided with water conservancy diversion outlet pipe (1.41), water conservancy diversion outlet pipe (1.41) pass top and pressure manifold (1.5) fixed connection and intercommunication of shell (1.1), pressure manifold (1.5) on be provided with outlet pipe (2).

2. The MBR flat membrane module for treating sewage according to claim 1, wherein: the MBR flat sheet membrane (1.4) comprises a support frame (1.43), a filter membrane (1.45), a flow guide net (1.44) and a flow guide water outlet pipe (1.41), wherein the support frame (1.43) comprises a rectangular frame formed by sequentially enclosing four support plates, the flow guide net (1.44) is fixedly arranged at an opening of the support frame (1.43), and the filter membrane (1.45) is arranged on the outer side of the flow guide net (1.44).

3. The MBR flat membrane module for treating sewage according to claim 2, wherein: the MBR flat membrane (1.4) further comprises a flow guide pipe (1.42), the flow guide pipe (1.42) is arranged on the inner sides of the two flow guide nets (1.44), and the outlet of the flow guide pipe (1.42) is communicated with the flow guide water outlet pipe (1.41).

4. The MBR flat membrane module for treating sewage according to any one of claims 1-3, wherein: the MBR flat membrane module (1) further comprises a perforated support plate (1.3), and the side edge of the perforated support plate (1.3) is fixedly connected with the inner wall of the lower part of the shell (1.1).