CN217868299U

CN217868299U - MBR system water inlet device for retarding membrane fouling and blocking

Info

Publication number: CN217868299U
Application number: CN202221708434.3U
Authority: CN
Inventors: 黄凤国; 于汇淼; 覃雄德; 许佳; 黎泉昌
Original assignee: Shenzhen Jingchang Water Technology Co ltd
Current assignee: Shenzhen Jingchang Water Technology Co ltd
Priority date: 2022-07-04
Filing date: 2022-07-04
Publication date: 2022-11-22
Anticipated expiration: 2032-07-04

Abstract

The utility model relates to a MBR system water installations that slows down dirty stifled of membrane locates the membrane cisterna, a plurality of membrane subassemblies of having arranged at the interval in the membrane cisterna, wherein, water installations including the person in charge of intaking and a plurality of with the water distribution branch pipe of the person in charge intercommunication of intaking, a plurality of water distribution branch pipe distribution sets up in the at least double-phase offside of each membrane subassembly, just be provided with a plurality of apopore towards the membrane subassembly on the water distribution branch pipe, the aperture of apopore increases gradually along the rivers direction, makes and reachs each the discharge of membrane subassembly is unanimous, avoids the membrane module pollution degree that the different, the concentration difference of pollutant position leads to in the membrane cisterna to utilize the high velocity of flow and the pressure of apopore play water to wash away the membrane subassembly on the water distribution branch pipe, form the high-efficient washing to the membrane surface, thereby make the adnexed pollutant of membrane surface drop, slow down the decline of membrane flux, reduce the equipment energy consumption.

Description

MBR system water inlet device for retarding membrane fouling and blocking

Technical Field

The utility model relates to a sewage treatment technical field, in particular to MBR system water installations who slows down dirty stifled of membrane.

Background

In the fields of sewage treatment and water resource recycling, MBR (membrane bioreactor) is a novel sewage treatment system which integrates the membrane separation technology and the biodegradation of a bioreactor, and uses a membrane component to replace a sedimentation tank in the traditional activated sludge process to realize the separation of media. The MBR process has the advantages of higher effluent quality than the traditional biochemical process, strong impact resistance, small occupied area, capability of effectively reducing the concentration of pollutants and the like, and also has the defects of high manufacturing cost, easy pollution and blockage of membranes, high energy consumption and the like.

In order to solve the problem of membrane fouling, although the aggravation of membrane fouling can be delayed by adopting hydraulic cleaning, online (maintainability) and offline (restorable) chemical cleaning, the membrane fouling is an irreversible process, so that the flux reduction of the membrane is an inevitable trend, and the water yield of the membrane module generally presents a gradual attenuation process, so that the alleviation of membrane fouling is a positive factor for promoting the wide application of an MBR process.

At present, MBR equipment on the market slows down the adhesion of membrane face pollutant with the aeration mode, leads to the energy consumption high, and wherein, the membrane pond that the dirty stifled membrane surface of control membrane cleaned accounts for the biggest proportion of energy consumption, and the water inlet mode of current MBR equipment is for directly holing at the membrane pond wall and intake, only has a total inhalant canal, leads to the interior water distribution of membrane pond inhomogeneous.

Therefore, the prior art has yet to be developed.

SUMMERY OF THE UTILITY MODEL

In view of the foregoing prior art's weak point, the utility model aims to provide a MBR system water installations who slows down dirty stifled of membrane aims at making the discharge unanimous that reachs each membrane module, avoids the membrane module pollution degree that pollutant position is different, the concentration is different and lead to in the membrane cisterna different to slow down the decline of membrane flux, reduce the equipment energy consumption.

In order to achieve the above object, the present invention provides the following technical solutions:

the utility model provides a MBR system water installations who slows down dirty stifled of membrane locates the membrane cisterna, a plurality of membrane subassemblies of having arranged at the interval in the membrane cisterna, wherein, water installations including the person in charge of intaking and a plurality of with the water distribution branch pipe of the person in charge intercommunication of intaking, a plurality of water distribution branch pipe distributes and sets up in the at least double-phase offside of each membrane subassembly, just be provided with the apopore of a plurality of orientation membrane subassembly on the water distribution branch pipe, the aperture of apopore is crescent along the rivers direction, makes and reachs each the discharge of membrane subassembly is unanimous.

Further, the flow velocity v of the water outlet holes adjacent to each other _i 、v _i+1 Satisfies the formula:

wherein i is the number of the water outlet holes,

the flow velocity coefficient of the water outlet holes, n is the number of the water outlet holes, alpha is the specific resistance of the pipeline, L is the length of the water distribution branch pipe, and Q is the total flow of the water distribution branch pipe.

Furthermore, the membrane modules are arranged in the membrane pool at intervals in a row-by-row manner, the water distribution branch pipes are divided into a plurality of rows and arranged on two opposite sides of each row of membrane modules, or the water distribution branch pipes are divided into a plurality of columns and arranged on two opposite sides of each column of membrane modules.

Further, a plurality of water distribution branch pipes are arranged on two opposite sides of each row or each column of membrane modules at equal intervals along the height direction of the membrane modules.

Furthermore, the water inlet main pipe is provided with a plurality of water distribution pipes, and the water distribution branch pipes are communicated with the corresponding water distribution pipes.

The utility model discloses beneficial effect that technical scheme has:

the utility model discloses a set up into water and be responsible for and the water distribution branch pipe, a plurality of water distribution branch pipe distributes and sets up in the at least double-phase offside of each membrane module, and be provided with the apopore of a plurality of orientation membrane module on the water distribution branch pipe, the aperture of apopore is crescent along the rivers direction, the discharge that makes and reach each membrane module is unanimous, avoid the membrane pond in the pollutant position different, the concentration is different and the membrane module pollution degree that leads to is different, and utilize the high velocity of flow and the pressure that the apopore goes out water to wash away the membrane module on the water distribution branch pipe, form the high-efficient washing to the membrane surface, thereby make the adnexed pollutant in membrane surface drop, slow down the decline of membrane flux, reduce the equipment energy consumption.

Drawings

FIG. 1 is a schematic view of the installation of the water intake device of the present invention;

fig. 2 is a schematic structural view of the water distribution branch pipe of the present invention.

Description of the reference numerals:

100-water inlet device, 10-water inlet main pipe, 20-water distribution branch pipe, 21-water outlet hole, 30-membrane tank, 40-membrane component and 50-water distribution pipe.

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 specific embodiments described herein are only used for explaining the present invention, and are not used for limiting the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front, and rear … …) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "connected" may be a fixed connection or a removable connection, or may be integral therewith; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature.

Referring to fig. 1 and 2, the present invention provides a MBR system water inlet device 100 for alleviating membrane fouling, which is disposed in a membrane tank 30, wherein a plurality of membrane modules 40 are arranged at intervals in the membrane tank 30, the water inlet device 100 includes a main water inlet pipe 10 and a plurality of branch water distribution pipes 20 communicated with the main water inlet pipe 10, when in actual use, the main water inlet pipe 10 is provided with a plurality of branch water distribution pipes 50, and the branch water distribution pipes 20 are communicated with the corresponding branch water distribution pipes 50, so as to complete water diversion; when in use, the main water inlet pipe 10 can be connected with an external water pump so as to provide water inlet pressure.

The water distribution branch pipes 20 are distributed on at least two opposite sides of each membrane module 40, the water distribution branch pipes 20 are provided with a plurality of water outlet holes 21 facing the membrane modules 40, the direction of the opening of each water outlet hole 21 can be selected according to the arrangement positions of the membrane modules 40, the aperture of each water outlet hole 21 is gradually increased along the water flow direction, so that the water flow reaching each membrane module 40 is consistent, the pollution degree of the membrane modules 40 caused by different pollutant positions and different concentrations in the membrane pool 30 is avoided, the membrane modules 40 are washed by the high flow rate and pressure of the water outlet holes 21 on the water distribution branch pipes 20, the membrane surfaces are efficiently cleaned, pollutants attached to the membrane surfaces drop, and the reduction of the membrane flux is slowed down.

The utility model discloses a mode of intaking compares in traditional single passageway mode of intaking, and the inhomogeneous problem of cloth water in the membrane pond 30 can be solved to the multichannel mode of intaking of this application, can replace or partly replace aeration systems completely to reduce the equipment energy consumption, and make the normal steady operation of equipment.

As an example, a plurality of membrane modules 40 are arranged in the membrane tank 30 at intervals in rows and columns, a plurality of the water distribution branch pipes 20 are arranged in multiple rows on two opposite sides of each row of membrane modules 40, or a plurality of the water distribution branch pipes 20 are arranged in multiple columns on two opposite sides of each row of membrane modules 40.

Further, a plurality of water distribution branch pipes 20 are arranged on two opposite sides of each row or each column of membrane modules 40 at equal intervals along the height direction of the membrane modules 40, so that membrane filaments at each height of the membrane modules 40 can be washed by water from the water outlet holes 21, and different pollution degrees of the membrane modules 40 caused by different positions and different concentrations of pollutants in the membrane pool 30 are avoided.

In particular, the flow velocity v of water adjacent to said outlet opening 21 _i 、v _i+1 Satisfies the formula:

wherein i is the number of the water outlet holes 21, the tail end is 1, the number of the water outlet holes increases in sequence in the reverse water flow direction, and i =1,2 …, n;

the flow rate coefficient of the water outlet hole 21 can be selected to be 0.97; n is the number of the water outlet holes 21; alpha is the specific resistance of the pipeline; l is the length of the water distribution branch pipe 20; q is the total flow rate of the water distribution branch pipes 20.

Wherein α can be represented by the formula

N is a pipe roughness coefficient, and if an iron pipe is N =0.013 and a steel pipe is N =0.012, d is the diameter of the water distribution branch pipe 20.

V satisfying the above formula _i 、v _i+1 The water flow from the water outlet hole 21 to each membrane module 40 can be consistent, so that different pollution degrees of the membrane modules 40 caused by different positions and concentrations of pollutants in the membrane pool 30 can be avoided.

The above embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. It is not exhaustive here for all embodiments. All obvious changes or variations led out by the technical scheme of the utility model are still in the protection scope of the utility model.

Claims

1. The utility model provides a slow down dirty MBR system water installations who blocks up of membrane, locates the membrane cisterna, a plurality of membrane modules of having arranged at the interval in the membrane cisterna, a serial communication port, water installations include the water inlet be responsible for and a plurality of with the water distribution branch pipe of intercommunication is responsible for, a plurality of the water distribution branch pipe distributes and sets up in the at least double-phase offside of each membrane module, just be provided with a plurality of apopore towards the membrane module on the water distribution branch pipe, the aperture of apopore increases along the rivers direction gradually, makes and reachs each the discharge of membrane module is unanimous.

2. The MBR system water inlet device for reducing membrane fouling according to claim 1, wherein a plurality of membrane modules are arranged in the membrane tank at intervals in a row-by-row manner, a plurality of water distribution branch pipes are arranged in a plurality of rows on two opposite sides of each row of membrane modules, or a plurality of water distribution branch pipes are arranged in a plurality of rows on two opposite sides of each row of membrane modules.

3. The MBR system water inlet device for reducing membrane fouling according to claim 2, wherein a plurality of the water distribution branch pipes are arranged on two opposite sides of each row or column of membrane modules at equal intervals along the height direction of the membrane modules.

4. The MBR system water inlet device for reducing membrane fouling according to claim 1, wherein the main water inlet pipe is provided with a plurality of water distribution pipes, and the water distribution branch pipes are communicated with the corresponding water distribution pipes.