CN110756054B

CN110756054B - Blade type hollow fiber membrane component and impeller type membrane component thereof

Info

Publication number: CN110756054B
Application number: CN201911057146.9A
Authority: CN
Inventors: 张宇峰; 张健; 焦泊臻; 刘浩
Original assignee: Tianjin Chengjian University
Current assignee: Tianjin Chengjian University
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2022-04-15
Anticipated expiration: 2039-10-31
Also published as: CN110756054A

Abstract

The invention discloses a vane type hollow fiber membrane component and an impeller type membrane component thereof, comprising: an impeller membrane component: the wheel rim comprises a hollow rotating shaft (1), a spoke tube (2), a rim tube (3) and a hollow fiber membrane (4); the impeller type membrane component is formed by communicating a hollow rotating shaft (1) with the rim pipe (3) through a spoke pipe (2), the impeller type membrane component is equally divided into a plurality of areas by the spoke pipe (2), and each area is provided with a blade type hollow fiber membrane component. The impeller-type membrane modules are connected in series on the same hollow rotating shaft (4) to form a wheel row. The wheel rows are arranged in the sewage tank in an arrangement mode of being mutually staggered and embedded up and down and left and right to form a complete hollow fiber Membrane Bioreactor (MBR). Through the mode, the invention can solve the problem of low filling density of the rotary membrane module reported nowadays and a series of problems caused by sludge deposition on the root of the hollow fiber membrane in the curtain membrane.

Description

Blade type hollow fiber membrane component and impeller type membrane component thereof

Technical Field

The invention relates to a blade type hollow fiber membrane component and an impeller type membrane component thereof, which are designed aiming at a hollow fiber MBR membrane component.

Background

Most of hollow fiber membrane treatment devices in MBR (membrane bioreactor) nowadays are square bodies and are tightly stacked, and the membrane bioreactor can settle a large amount of sludge on the surface of a hollow fiber membrane after a period of time, especially the root part of a curtain type membrane, which is the main reason for causing the blockage of membrane holes and even broken filaments. Therefore, a great number of other membrane modules are reported nowadays, but all have great practical application problems, for example, the shapes of a great number of rotating devices reported nowadays cause great reduction of the packing density of hollow fiber membranes therein, reduction of water filtration efficiency and the like.

Disclosure of Invention

The purpose of the invention is as follows: the invention aims to provide a blade type hollow fiber membrane component and an impeller type membrane component thereof, which are used for solving the problem of low filling density of the rotary type membrane component reported nowadays, solving a series of problems caused by sludge deposition on the root part of a hollow fiber membrane in the curtain type membrane and achieving the purposes of simple and convenient operation and membrane blockage reduction.

The technical scheme is as follows: in order to achieve the purpose, the invention designs the following technical scheme: the vane type hollow fiber membrane component and the impeller type membrane component of the impeller type membrane component comprise a hollow rotating shaft, a rim pipe, a spoke pipe and the vane type hollow fiber membrane component; the impeller type membrane component is communicated with the hollow rotating shaft through more than three spoke pipes by a rim pipe, the impeller type membrane component is equally divided into a plurality of areas by the more than three spoke pipes, and each area is provided with a blade type hollow fiber membrane component.

One end of the hollow fiber membrane is cast on the hollow rotating shaft like a spoke of a bicycle wheel, the other end of the hollow fiber membrane is bundled and cast on the rim, and the hollow fiber membrane is arranged to form the blade type hollow fiber membrane component.

The impeller-type membrane modules are connected in series at equal intervals on the same hollow rotating shaft to form a wheel row, and the hollow rotating shaft of the wheel row is the only purified water outlet.

The wheel rows of the impeller type membrane assembly are arranged in an MBR tank in an up-down and left-right embedded arrangement mode to form a complete hollow fiber MBR.

Each row of the impeller type hollow fiber membrane component can be driven independently or uniformly by all the rows, the impeller of each row rotates in the same direction, but the upper part, the lower part, the left part and the right part of each two adjacent impellers rotate in the opposite direction.

Has the advantages that: (1) the packing density of the hollow fibers is greatly increased compared to the presently reported rotary devices. The filtering effect is greatly improved. (2) Each impeller component can be designed into a detachable structure, so that the hollow fiber membrane component can be conveniently and independently detached, replaced and maintained. (3) The shearing force between every two adjacent impellers can ensure that the hollow fiber has certain self-cleaning capability and stirring effect; self-cleaning can effectively slow down membrane pollution and membrane blocking, and a mechanical stirring mode can effectively avoid flowing dead angles. (4) The impeller rotating speed of the impeller type membrane component is adjusted through the transmission device, so that the relative flow velocity of water flow in the sewage tank and the hollow fiber membrane is controlled, the sludge distribution in the tank can be effectively improved, and the sludge adhesion degree on the surface of the membrane is reduced.

Drawings

FIG. 1 is a schematic view of a hollow fiber membrane module (impeller structure) according to the present invention.

FIG. 2 is a schematic sectional view of a hollow fiber membrane module (disk) according to the present invention.

FIG. 3 is a schematic top view of the hollow fiber rotary device according to the present invention.

FIG. 4 is a schematic view of the assembly arrangement of the hollow fiber membrane module of the present invention 1.

FIG. 5 is a schematic view of the assembly arrangement of the hollow fiber membrane module of the present invention, FIG. 2.

Detailed Description

The present invention will be further described in the following detailed description with reference to the drawings, which are only used for clearly and completely describing the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all embodiments, and do not limit the protection scope of the present invention.

As shown in fig. 4, the present invention provides a blade type hollow fiber membrane module and an impeller type membrane module thereof, which includes: the six-hole sleeve (1), the spoke tubes (2), the rim tube (3) and the hollow fiber membrane (4) form an impeller type membrane assembly (figure 1), and the impeller type membrane assembly is formed by connecting the six-hole sleeve (1) and the rim tube (3) through the three spoke tubes (2) to form an impeller framework; the hollow fiber membranes (4) are cast on six reserved openings of the six-hole sleeve (1), are bundled in an isosceles triangle shape like spokes of a spoke bicycle wheel and are cast on the rim pipe (3); the six-hole sleeve (1) of the impeller is in closed connection with the hollow rotating shaft (5), and a plurality of impeller type membrane components are arranged on the hollow rotating shaft (5) at equal intervals to form a wheel row of the impeller type hollow fiber membrane components; the wheel rows are arranged in the MBR tank in an up-down and left-right embedded arrangement mode to form a complete hollow fiber MBR. (FIG. 4).

When the device is used, the device is placed in a sewage tank, and each row of wheels slowly rotates in the same direction at a certain speed or starts to rotate when the sludge attachment amount on the hollow fibers reaches a certain degree; sewage is filtered by the hollow fibers and then flows into the hollow rotating shaft (5) and the rim pipe (3) from two ends of the hollow fibers respectively, filtered water in the rim pipe (3) flows into the hollow rotating shaft through the spoke pipe (2), and the filtered water is discharged from a water outlet (6) of the hollow rotating shaft.

In conclusion, the rotary membrane component can effectively slow down membrane pollution and membrane blockage, ensure that the filtration operation can be continuously carried out in a longer time, and prolong the cleaning period and the service life of the membrane component.

All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Claims

1. An impeller type membrane component comprises a hollow rotating shaft (5), a six-hole sleeve (1), spoke tubes (2), a rim tube (3) and a plurality of hollow fiber membranes (4), and is characterized in that the rim tube (3) is composed of a circular hollow tube, the spoke tubes (2) are composed of a hollow tube, more than three spoke tubes (2) are connected with the six-hole sleeve (1) and the rim tube (3) to form an impeller framework, the rim tube (3) is communicated with the hollow rotating shaft (5) through more than three spoke tubes (2), the six-hole sleeve (1) is provided with six reserved openings, one ends of the hollow fiber membranes (4) are cast on the hollow rotating shaft (5) at the six reserved openings of the six-hole sleeve (1), the other ends of the hollow fiber membranes (4) are cast on the rim tube (3) in a bundling manner, the six-hole sleeve (1) is connected with the hollow rotating shaft (5) in a closed manner, the sewage is filtered by a plurality of hollow fiber membranes (4) and then flows into the hollow rotating shaft (5) and the rim pipe (3) from two ends of the hollow fiber membranes (4), the filtered water in the rim pipe (3) flows into the hollow rotating shaft (5) through the spoke pipe (2), and the filtered water is discharged from a water outlet (6) of the hollow rotating shaft (5).

2. An edge-on membrane module, its characterized in that: the impeller-type membrane module comprises the impeller-type membrane module as claimed in claim 1, wherein a plurality of impeller-type membrane modules are connected in series on the same hollow rotating shaft to form a wheel bank-type membrane module.

3. A hollow fiber membrane bioreactor is characterized in that: the membrane module comprises the wheel row type membrane module of claim 2, and a plurality of wheel row type membrane modules are arranged in an embedded mode in a staggered mode.