Operation method of externally pressurized hollow fiber membrane separator

The technology of a separation device and an operation method, applied in the field of membrane separation, can solve the problems of many pipelines, complicated operation and unclean chemicals, etc., and achieve the effects of membrane flux recovery, good cleaning effect and simple operation and operation.
CN1548219AInactive Publication Date: 2004-11-24TIANJIN MOTIAN MEMBRANE ENG & TECH
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
TIANJIN MOTIAN MEMBRANE ENG & TECH
Publication Date
2004-11-24
Estimated Expiration
Not applicable ยท inactive patent

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Abstract

The first operation process in hollow fiber membrane separator system includes: work state; air and water double-washing state including introducing small amount of original liquid to wash the membrane in the right direction while introducing compressed air to wash the membrane in the right direction; and draining state. The second operation process includes: work state; air and water double-washing state including introducing small amount of original liquid to wash the membrane in the right direction while introducing compressed air to wash the membrane in the right direction; inverse washing state with inverse washing liquid; and draining state. The third operation process includes: work state; air and water double-washing state including introducing small amount of original liquid with chemical added to wash the membrane in the right direction while introducing compressed air to wash the membrane in the right direction; and draining state.
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Description

technical field

[0001] The invention relates to a membrane separation technology, in particular to an operation method of an external pressure hollow fiber membrane separation device. Background technique

[0002] With the improvement of people's living standards, people's requirements for drinking water continue to increase, so-called pure water, space water or purified water has entered people's daily life. Moreover, production and industrial water, such as biochemical, pharmaceutical, food, seasoning and other fields, have higher and higher requirements for water purification. In recent years, people have developed microfiltration and ultrafiltration membrane technologies for water purification, which are meeting this need and have achieved good practical results. Among them, external pressure hollow fiber membranes are most widely used. This is because the external pressure hollow fiber membrane (hereinafter referred to as the membrane) has the largest filling area per...

Claims

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