Membrane filter

A membrane filtration and membrane module technology, applied in membrane technology, semi-permeable membrane separation, chemical instruments and methods, etc., can solve the problems of curtain membrane, reduction of effective filtration area, and deterioration of effluent quality. The effect of easy industrialization implementation, improved anti-pollution degree, stable effluent quality and quantity

Inactive Publication Date: 2006-08-02
TIANJIN MOTIAN MEMBRANE ENG & TECH
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AI Technical Summary

Problems solved by technology

For the membrane module composed of two diaphragms, its main disadvantage is that it cannot solve the pollution problem of the curtain membrane well
During use, because the membrane module only aerates the lower part of the membrane, there will be sludge between the

Method used

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Embodiment Construction

[0011] The membrane device of the present invention is mainly used for pretreatment of seawater. Its simple process is as follows:

[0012] Raw seawater→flocculation sedimentation→intermediate water storage tank→submerged curtain membrane filter device→water production tank→purified seawater.

[0013] Membrane filtration device of the present invention (hereinafter referred to as membrane device, see figure 1 ) includes water intake system, membrane filtration system, water production system, aeration system and control system.

[0014] The water inlet system of the membrane device of the present invention includes an intermediate water storage tank 1 , a water inlet pump 3 and a membrane filter tank 9 piped in sequence. When the membrane device is used, the seawater is first settled through the flocculation and sedimentation process. The seawater after flocculation and settlement enters the intermediate water storage tank 1 . The volume of the intermediate water storage t...

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Abstract

The membrane filter apparatus includes a water inlet system, a membrane filter system, a water producing system, an aeration system and a control system. The membrane filter system includes membrane filter tank and inside immersed modules, which has gas inlet pipe connected via the aeration system to the control system, water outlet port connected to the water producing system via valve and pressure meter and 2-10 membrane assemblies comprising curtain type membrane and connected to the aeration system via pipeline. The aeration system includes blower, gas flow meter, aeration regulating valve and aeration pipe connected successively via pipes and connected to the control system. The control system has PLC controller and corresponding software. The membrane filter apparatus is used in pre-treatment of sea water and the unique aeration mode results in raised antifouling capacity and long service life of the membrane and stable water output quality and amount.

Description

technical field [0001] The invention relates to a membrane filtration device in the field of membrane separation technology, specifically a submerged curtain membrane filtration device mainly used for water purification and reverse osmosis seawater desalination pretreatment, and the international patent main classification number is intended to be Int.Cl 7 B01 D63 / 02. Background technique [0002] The core desalination element in the reverse osmosis seawater desalination process is the reverse osmosis membrane. This kind of reverse osmosis membrane requires that the incoming seawater must meet a certain water quality index before it can enter. Therefore, the seawater must be pretreated before the reverse osmosis membrane element, that is, to remove solid particles, bacteria, algae and other impurities in the seawater. , so as not to cause contamination of the reverse osmosis membrane. Among the above-mentioned water quality indicators, the most important indicator is the ...

Claims

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Application Information

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IPC IPC(8): B01D61/02B01D63/02
Inventor 戴海平杜启云
Owner TIANJIN MOTIAN MEMBRANE ENG & TECH
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