Hollow fiber film assembly

A technology of fiber membranes and fiber membrane bundles, applied in the field of water treatment, can solve problems such as not easy to remove, mud accumulation at the root of hollow fiber membranes, loss of effective filtration area due to inhomogeneity of filtration, etc., so as to achieve not easy deposition and retention, avoid Sedimentation, the effect of improving water flow turbulence

Active Publication Date: 2008-09-03
BEIJING ECOJOY WATER TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The above-mentioned hollow fiber membrane modules all have a common problem: the root of the hollow fiber membrane has serious sludge accumulation, and once the sludge is formed, it is not easy to remove, which reduces the effective area of ​​the membrane module and the uniformity of filtration. The continuous development and spread of membrane fouling at the root will further aggravate the inhomogeneity of filtration and the loss of effective filtration area, which will eventually shorten the service life of the entire hollow fiber membrane module
The solution disclosed in Chinese patent application 200510049324.5 is to divide the hollow fiber membranes into several bundles and evenly distribute them around the central aeration pipe, and use the airflow provided by the aeration head at the bottom of the membrane module to hydraulically flush the fiber membrane bundles. To a c

Method used

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Examples

Experimental program
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Example Embodiment

[0058] Example 1

[0059] Such as figure 1 , image 3 As shown, a hollow fiber membrane module includes a housing 1 made of UPVC (un-plasticized polyvinyl chloride) plastic with an inner diameter of 90 mm, and a hollow fiber composed of 300 hollow fiber membrane filaments 2 arranged in the housing 1 Membrane bundle 3, the average pore diameter of the hollow fiber membrane filaments 2 for passing liquid through the micropores is 0.1μm, the outer diameter of the hollow fiber membrane filaments is 1.35mm, the material is polyvinylidene fluoride, and the two ends are cast with epoxy resin. In the upper end 4 and the lower end 5, it is secondarily cast with polyurethane to protect the root of the film filament. The overall shapes of the upper end 4 and the lower end 5 are cup-shaped, and the diameter of the upper mouth circle is 60 mm. Both the upper end 4 and the lower end 5 are provided with a product water collection chamber 9 inside. The two ends of the hollow fiber membrane filam...

Example Embodiment

[0066] Example 2

[0067] Such as figure 2 , Figure 4 As shown, a hollow fiber membrane module includes a shell 1 made of UPVC plastic with an inner diameter of 90mm, a hollow fiber membrane bundle 3 composed of 180 hollow fiber membrane filaments 2 arranged in the shell 1, and a hollow fiber membrane The average pore diameter of the micropores of the silk 2 used to pass liquid is 0.1μm, the outer diameter of the hollow fiber membrane filament is 1.35mm, the material is polyvinylidene fluoride, the upper end can swing freely, and each membrane filament is in a closed cell state. The flexible epoxy resin is used for sealing, the lower end is cast with epoxy resin to gather in the lower end 5, and polyurethane is used for secondary casting to protect the root of the film filament. The overall shape of the lower end 5 is a cup shape, and the upper cross section is a square with a side length of 50 mm. The hollow fiber membrane filament 2 is in an open state in the water production ...

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Abstract

The invention discloses a hollow fibrous membrane component, which comprises hollow fibrous membrane bundle composed of a plurality of hollow fibrous membrane threads, the end of the hollow fibrous membrane bundle, an air inlet pipe, a water producing pipe and an air distribution device with an air distribution hole. The end surface of the end adopts a raised end, the air distribution device is communicated with the air inlet pipe, the position of the air distribution hole is near to the bottom part of the raised end surface when the hollow fibrous membrane component is vertically arranged, and the hole opening of the air distribution hole is opened towards the top part of the raised end surface. The invention also discloses a membrane bioreactor utilizing the hollow fibrous membrane component and water treatment equipment. The hollow fibrous membrane component disclosed by the invention has the structural characteristics that the anti-pollution performance of the hollow fibrous membrane component is enhanced, particularly the anti-pollution performance of the root of the hollow fibrous membrane is enhanced, the effective filtering areas of the hollow fibrous membrane threads are ensured, the service life of the hollow fibrous membrane component is prolonged, and the processing, the assembly, the installation and the reparation of the hollow fibrous membrane component are very convenient.

Description

technical field [0001] The invention relates to membrane separation water treatment equipment, in particular to a hollow fiber membrane module applied to water treatment and a membrane bioreactor using the hollow fiber membrane module, belonging to the technical field of water treatment. Background technique [0002] The membrane bioreactor (Membrane Bioreactor, MBR) process is an efficient sewage treatment and reuse technology that organically combines membrane separation technology and traditional biological treatment technology. In the MBR system, all kinds of pollutants in the sewage are mainly removed through the biochemical action of microorganisms, but unlike the traditional biological treatment process, the membrane module replaces the secondary settling tank and completely separates the mud and water with its high-efficiency separation. The sludge retention time and the hydraulic retention time can be independent of each other, the increase of the concentration of a...

Claims

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Application Information

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IPC IPC(8): C02F3/10C02F3/12C02F1/44
CPCY02W10/10
Inventor 孙友峰
Owner BEIJING ECOJOY WATER TECH
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