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.

Inactive Publication Date: 2004-11-24
TIANJIN MOTIAN MEMBRANE ENG & TECH
View PDF2 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it still has shortcomings: the external pipeline design of the membrane module in the membrane device is not perfect
[0005] The disadvantages of the above cleaning are: there are many pipelines, and the operation is complicated
[0006] In addition, the original process is backwashing and dosing. Because the chemical itself is not clean, it pollutes the filtrate side of the membrane, thus affecting the quality of the produced water, and it is difficult to purify the chemical itself.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Operation method of externally pressurized hollow fiber membrane separator
  • Operation method of externally pressurized hollow fiber membrane separator
  • Operation method of externally pressurized hollow fiber membrane separator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] The device of the present invention is provided with a plurality of valves, and the operation, cleaning and sewage discharge of the membrane module are controlled by controlling the opening and closing of the valves. The valves in the drawings can be divided into manual valves and automatic valves (which can be pneumatic or electric diaphragm valves, butterfly valves, and ball valves) according to their types.

[0023] If divided according to function or function, valves 1 and 1a are inlet pressure regulating valves or regulating valves; valves 11 and 11a are called import automatic valves; valve 2 is outlet pressure regulating valves or regulating valves; valve 19 is called outlet automatic valves; 4 and 5 are switching valves, which are used for switching between membrane separation work and chemical cleaning work; valve 6 is the inle...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

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.

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B01D63/02B01D65/02
Inventor 吕晓龙
Owner TIANJIN MOTIAN MEMBRANE ENG & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap