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Ceramic film backwash method

A backwashing and ceramic membrane technology, applied in the field of mechanical equipment cleaning, can solve the problems of incomplete flux recovery, slow recovery speed, high energy consumption, etc., and achieve the effect of saving energy and cleaning agent consumption, and fast recovery and regeneration

Inactive Publication Date: 2008-05-28
姜洪达
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. Slow flux recovery and high energy consumption;
[0004] 2. Flux recovery is not complete;
[0005] 3. The recovery and regeneration of ceramic membrane flux cannot be performed online

Method used

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Experimental program
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Effect test

Embodiment Construction

[0026] Concrete steps of the present invention are:

[0027] a. First install a tee at the clear liquid outlet at the feed end of the ceramic membrane module, and connect the tee with the backwash liquid storage tank through a pipeline. A backwash pump, a backwash control valve, and a backwash pressure are installed on the pipeline. surface;

[0028] b. When cleaning the ceramic membrane filtration equipment, the cleaning solution should be injected into the backwash tank in advance; the temperature of the cleaning solution should be the same as that of the circulating fluid in the ceramic membrane equipment (general range 20°C-95°C). The cleaning process can be cleaned during the production and operation of the ceramic membrane filtration equipment or when the production is stopped. The cleaning liquid can be pure water or ultra-filtered acid-base water with a certain concentration, such as 1% nitric acid or 1% sodium hydroxide, etc. ;

[0029] c. First close the upper and ...

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PUM

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Abstract

A ceramic membrane backwashing method belongs to the field of mechanical equipment cleaning. The aim of the invention is the ceramic membrane backwashing method which employs a backwashing way to clean a ceramic membrane cleaning device. The invention is provided with a tee at the liquid outlet of a ceramic membrane component; the tee is communicated with a cleaning solution tank through a pipeline; a backwashing pump, a backwashing control valve, a backwashing pressure gauge are arranged on the pipeline; and the backwashing is conducted by the added equipments. Based on the general traditional cleaning method, the invention also adds a plurality of advantages that the equipment needs not to be stopped; the restoration and regeneration of the ceramic membrane flux can be conducted online faster and more thoroughly than the original cleaning method; and the cleaning agent amount can also be saved.

Description

Technical field: [0001] The invention belongs to the field of mechanical equipment cleaning. Background technique: [0002] At present, in order to restore the membrane flux, the ceramic membrane production equipment generally adopts the traditional cleaning method, also known as the positive washing method, (that is, adding acid or alkali or other cleaning agents to pure water, and the equipment system is the same as in normal production. Turn on the circulating pump for circular cleaning, the difference is that the permeate outlet valve needs to be closed; open the permeate outlet valve every 20 minutes or so, observe the permeate flow meter, and detect the membrane flux until the membrane flux recovers). Traditional cleaning methods have the following problems: [0003] 1. Slow flux recovery and high energy consumption; [0004] 2. Flux recovery is not complete; [0005] 3. The restoration and regeneration of ceramic membrane flux cannot be performed online. Inventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D65/02
Inventor 姜洪达
Owner 姜洪达
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