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Aeration method for improving film pollution control function

A membrane fouling and aeration technology, applied in water aeration, chemical instruments and methods, biological water/sewage treatment, etc., can solve the problems of high energy consumption in operation, save operating costs, save aeration energy consumption, and can Strong implementation effect

Inactive Publication Date: 2010-07-07
INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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Problems solved by technology

At present, high operating energy consumption is one of the main problems encountered in the promotion and application of membrane technology

Method used

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  • Aeration method for improving film pollution control function
  • Aeration method for improving film pollution control function
  • Aeration method for improving film pollution control function

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Embodiment Construction

[0018] Within the purview of the present invention, the plug flow aeration technology involved in the present invention is compared with the traditional free aeration method. The plug flow aeration technology involved in the present invention improves membrane flux, membrane filtration effect and anti-pollution effect, etc. It has obvious technical advantages.

[0019] 1. Increased membrane flux

[0020] Taking the flat membrane module as an example, the membrane material is a flat membrane provided by a certain company, the membrane aperture is 0.3um, the effective filtration area of ​​the membrane is 0.25 square meters, the length is 800mm, the width is 300mm, and the membrane spacing is 10mm. The plug flow aeration method involved in the present invention The technical parameters of medium aeration are that the single bubble size is 400ml, and the aeration frequency is 0.42Hz. For the water sample filtration of tap water and ultrapure water (1:1), self-pressurized immersion...

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Abstract

The invention discloses an aeration method for improving film pollution control function and an application thereof in the film separation process, belonging to the water treatment technology and film separation technology application field. The aeration method in the invention is that big single bubbles are produced intermittently in aeration by an aeration device; the shearing force on the film surface and the mass transfer efficiency by the big bubbles are obviously higher than the small bubbles produced in ordinary free aeration. The invention aims to provide a film pollution aeration control method realizing low energy consumption and high efficiency, further improve the film pollution control function and the film separation selectivity and effect, reduce the aeration energy consumption, lessen the film cleaning times and cost and improve the service life of film component.

Description

field of invention [0001] The invention relates to the field of water treatment technology and membrane separation technology, such as membrane bioreactor, microfiltration, ultrafiltration and reverse osmosis and other separation processes. The application field relates to sewage treatment and resource utilization in the field of water treatment, drinking water quality purification, biotechnology And separation of material and liquid in the chemical industry, etc. Background of the invention [0002] With the technological progress of membrane science and material science, the quality and overall performance of membranes have been gradually improved; on the other hand, the manufacturing cost of membranes has been reduced year by year, which greatly reduces the investment cost of membrane separation technology. A lot of research and engineering application experience show that the problems that limit the application of membrane separation technology are membrane fouling contr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12C02F7/00
CPCY02W10/10
Inventor 张凯松魏鹏刘海宁姚萌
Owner INST OF URBAN ENVIRONMENT CHINESE ACAD OF SCI
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