Ceramic membrane cleaning method for ceramic filter
A ceramic filter and ceramic membrane technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve problems such as low cleaning efficiency, clogging of clogged areas, and reuse without cleaning, so as to reduce costs and improve The effect of adsorption power, improving efficiency and cleaning effect
Active Publication Date: 2019-03-29
HEFEI XINDA MEMBRANE TECH
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Problems solved by technology
[0002] The ceramic filter is widely used in the recovery of mineral particles. The ceramic filter has three areas. The first area is the adsorption area. The negative pressure is used to adsorb the mineral particles on the ceramic membrane, and the water is sucked out through the capillary of the ceramic membrane, so that the mineral particles are in the A dense layer of mineral particle film is formed on the ceramic film; after adsorption, the ceramic film leaves the liquid surface and enters the drying area, where the mineral particles are also dried by vacuum negative pressure. After drying, the mineral particles on the ceramic film are removed by a scraper. Scraping; after scraping, the ceramic membrane enters the cleaning area to clean the ceramic membrane. There are two ways to clean the ceramic membrane in the prior art, ultrasonic cleaning and backwashing. After cleaning, it enters the adsorption area and is recycled. The cleaning time is short, the cleaning efficiency is low, and the cleaning effect is poor. It will cause unclean cleaning and enter the adsorption area. The clogged area of the ceramic membrane will become more and more clogged until it loses the drying function.
However, in the prior art, the clogged ceramic membrane is directly scrapped, without cleaning and reuse, and the ceramic membrane is expensive
Method used
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[0028] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0029] A ceramic membrane cleaning method for a ceramic filter, comprising the following steps:
[0030] 1. Judging the clogging status of the ceramic membrane in use
[0031] 1) During the use of the ceramic membrane in the ceramic filter, the particles are adsorbed on the ceramic membrane by negative pressure. There are many capillaries on the ceramic membrane, and the water can be sucked out through the capillaries, and the particles form a complete layer on the ceramic membrane. The thin film is scraped out by the scraper in the cer...
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The invention discloses a ceramic membrane cleaning method for a ceramic filter. The method comprises the following steps: judging the clogging condition of the ceramic membrane in use, judging replacement and cleaning conditions of the ceramic membrane in use, taking the ceramic membrane in the step 2 from the ceramic filter, and performing soaking, acid pickling and back washing. The invention aims to provide the ceramic membrane cleaning method for the ceramic filter, through cleaning and reusing of the clogged ceramic membrane, the adsorption ability of the ceramic membrane is improved, and the cost of enterprises is reduced; acid pickling and ultrasonic cleaning are conducted at the same time, and after cleaning is conducted, back washing is conducted with water, so that clogging particles are cleared, and the cleaning efficiency and the cleaning effect are improved.
Description
technical field [0001] The invention relates to a ceramic membrane cleaning method, in particular to a ceramic membrane cleaning method for a ceramic filter. Background technique [0002] The ceramic filter is widely used in the recovery of mineral particles. The ceramic filter has three areas. The first area is the adsorption area. The negative pressure is used to adsorb the mineral particles on the ceramic membrane, and the water is sucked out through the capillary of the ceramic membrane, so that the mineral particles are in the A dense layer of mineral particle film is formed on the ceramic film; after adsorption, the ceramic film leaves the liquid surface and enters the drying area, where the mineral particles are also dried by vacuum negative pressure. After drying, the mineral particles on the ceramic film are removed by a scraper. Scraping; after scraping, the ceramic membrane enters the cleaning area to clean the ceramic membrane. There are two ways to clean the cer...
Claims
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IPC IPC(8): B01D65/02
CPCB01D65/02B01D2321/04B01D2321/162B01D2321/2075B01D2321/28
Inventor 李胜明张庆陈传云梁远争李爱珍王志强
Owner HEFEI XINDA MEMBRANE TECH