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Immersion type membrane module and membrane filtering device

A membrane module and immersion technology, applied in the field of membrane filtration device and immersion membrane module, can solve the problems of speed distribution, inconvenient maintenance and high manufacturing cost, and achieve the effect of uniform speed distribution, convenient maintenance and lower production cost.

Inactive Publication Date: 2006-12-27
JIANGSU JIUWU HITECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the shortcomings of the above-mentioned tubular membrane module equipment, such as complex equipment, high manufacturing cost, and inconvenient maintenance, and to solve the problem of the velocity distribution of the raw material fluid on the outer surface of the membrane tube and the surface of the inner channel of the membrane tube, a method of using permeate to flow from the inside is proposed. The membrane tubes drawn from the channel are membrane elements, and the membrane tubes are regularly arranged in the array through the auxiliary array arrangement device.

Method used

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  • Immersion type membrane module and membrane filtering device
  • Immersion type membrane module and membrane filtering device
  • Immersion type membrane module and membrane filtering device

Examples

Experimental program
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Effect test

Embodiment 1

[0035] A submerged membrane module 1 is characterized in that the distance from the outer surface 2 of the membrane tube to the surface of the auxiliary array arrangement device 3 around it or the outer surface spacing between the membrane tubes is adapted to the size of the channel 4 in the membrane tube as the raw material side, and the spacing It is 0 to 100 times the diameter of the channel 4 in the membrane tube. figure 2Shown are the cross-sectional views of the four components when the membrane tube is installed, the four components are the regular hexagonal membrane tube without ribs, the circular membrane tube with irregular rod-shaped ribs, and the regular hexagonal membrane tube with slots Plate rib assembly, regular hexagonal membrane tube with corrugated plate rib assembly; the cross-sectional view of the assembly after removing the membrane tube is as follows image 3 shown. The shape of the array arrangement described herein can be circular, elliptical, petal-...

Embodiment 2

[0041] Regular hexagonal auxiliary array arrangement device (the length of the filled membrane tube is 0.5m, made of stainless steel, no sleeve, no rib plate), 7 pieces of 4×19 regular hexagonal zirconia ceramic membrane tubes are evenly distributed inside, and the membrane aperture is 200nm. The distance between the outer surface of the membrane tube is 6mm. Immerse the membrane tube into the flux detection cell, the feed liquid is pure water, at 20°C, the permeation side draws negative pressure (the pressure difference between the two sides of the membrane is 0.09MPa), and the bottom is blown at 1M 3 / h, the flux is 1100L / m 2 h.

Embodiment 3

[0043] Circular auxiliary array arrangement device (the length of the filled membrane tube is 0.5m, made of plexiglass, with a sleeve and no rib plate), with 19 circular titanium oxide ceramic membrane tubes evenly distributed inside 6×19, with a membrane pore size of 50nm. The minimum distance between the outer surface of the tube is 6mm. Immerse the membrane tube into the flux detection cell. The feed liquid is pure water. At 20°C, negative pressure is drawn on the permeation side (the pressure difference between the two sides of the membrane is 0.09MPa), and the bottom is blown at 2.5M 3 / h, the flux is 800L / m 2 h.

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Abstract

The present invention relates to an immersion membrane component and airlift membrane filtration apparatus using the same. The said immersion membrane component uses a membrane pipe leading out from inner passage of a filtration solution as a membrane component, making the raw materials liquid uniformly distributed in the membrane components arrays through array arrangement and auxiliary array arrangement apparatus. The said airlift membrane filtration apparatus comprises the immersion membrane component, raw materials pool, aeration system and osmosis liquid negative pressure pumping system. Vertically dipping the component into the raw materials pool with aeration system in the bottom makes the airlift liquid move axially along membrane pipe and the osmosis liquid penetrate radically from membrane pipe, realizing cross-flow filtration and the osmosis liquid capable of being lead out by negative pressure pumping system.

Description

technical field [0001] The invention relates to a submerged membrane module and a membrane filtration device using the module. In particular, it is a submerged membrane module using a membrane tube drawn from an inner passage as a membrane element and an air-lift membrane filtration device using the module, which can be used in a sewage treatment process. Background technique [0002] Membrane is a selective barrier to realize the separation of different substances in fluid, and is used to realize membrane treatment processes such as membrane filtration, aeration, and membrane extraction. Especially in the process of membrane filtration, macromolecules or large-sized particles can be effectively retained by the membrane. Compared with conventional filtration, membrane filtration has the characteristics of high filtration precision and energy saving. [0003] In the application, the membrane element should be integrated into a membrane module, so that the raw material fluid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D63/06C02F3/12
CPCY02W10/10
Inventor 邢卫红王龙耀徐南平
Owner JIANGSU JIUWU HITECH
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