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Technics of preparing lipophilic porous ceramic filtering material

A kind of porous ceramics and preparation technology, applied in the direction of filtration and separation, chemical instruments and methods, separation methods, etc., can solve the problems of difficult-to-elution adsorption oil, low mechanical strength, short service life, etc., to achieve enhanced oil removal ability, mechanical The effect of high strength and long service life

Inactive Publication Date: 2007-12-05
WUHAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, walnut shell is mostly used as the filter material. Although it has good adsorption and lipophilicity, it is difficult to wash off the adsorbed oil with pure water during backwashing. Usually, a cleaning agent is required. At the same time, its particle size is large and its mechanical strength is low. Therefore, the service life is short, and generally needs to be replaced within half a year at most.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A preparation process of lipophilic porous ceramic filter material, which uses ceramic filter balls as a matrix, high hydrogen-containing silicone oil as a modifier, distilled water and ethanol as a solvent, adding sodium acetate as a catalyst, and curing at 170°C. It includes the following steps:

[0015] 1) According to the Chinese invention patent number: ZL200310111209.7 (inventor: Wu Jianfeng), the environmental protection ceramic filter ball (referred to as the ceramic filter ball) is manufactured to obtain the ceramic filter ball; the ceramic filter ball with a particle size of 0.5 ~ 2mm is scrubbed with water ( Until the washing water does not appear yellow, so as to wash away the pollutants and dust adhered to the surface of the filter material), then dry it at 105°C, and then rinse the dried ceramic filter ball with ethanol for 20 minutes (stir for 10 minutes first) , then stand still for 10 minutes), and dry naturally to obtain a pretreated ceramic filter mat...

Embodiment 2

[0020] A kind of preparation technology of lipophilic porous ceramic filter material, it comprises the steps:

[0021] 1) According to the Chinese invention patent number: ZL200310111209.7 (inventor: Wu Jianfeng), the environmental protection ceramic filter ball (referred to as the ceramic filter ball) is manufactured to obtain the ceramic filter ball; the ceramic filter ball with a particle size of 0.5 ~ 2mm is scrubbed with water, Then dry it at 100°C, rinse the dried ceramic filter ball with ethanol for 15 minutes, and dry it naturally to obtain a pretreated ceramic filter material;

[0022] 2) Prepare modified solution: select high hydrogen-containing silicone oil, distilled water and ethanol according to the volume ratio of high hydrogen-containing silicone oil, distilled water and ethanol as 1:3:7, and select sodium acetate according to the quality of sodium acetate as 1% of the quality of distilled water; First add sodium acetate to distilled water, stir to dissolve it,...

Embodiment 3

[0025] A kind of preparation technology of lipophilic porous ceramic filter material, it comprises the steps:

[0026] 1) According to the Chinese invention patent number: ZL200310111209.7 (inventor: Wu Jianfeng), the environmental protection ceramic filter ball (referred to as the ceramic filter ball) is manufactured to obtain the ceramic filter ball; the ceramic filter ball with a particle size of 0.5-2mm is scrubbed with water, Then dry it at 110°C, rinse the dried ceramic filter ball with ethanol for 30 minutes, and dry it naturally to obtain a pretreated ceramic filter material;

[0027] 2) Prepare modified solution: select high hydrogen-containing silicone oil, distilled water and ethanol according to the volume ratio of high hydrogen-containing silicone oil, distilled water and ethanol as 1:3:7, and select sodium acetate according to the quality of sodium acetate as 1% of the quality of distilled water; First add sodium acetate into distilled water, stir to dissolve it,...

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Abstract

The lipophylic filtering material preparing process includes the following steps: 1. washing ceramic filter ball in water, stoving, flushing with alcohol and air drying to obtain ceramic filter material; 2. compounding modifying solution with high hydrogen silicone oil, distilled water and alcohol in the volume ratio of 1 to 3 to 7, sodium acetate in the amount of 1 % of distilled water and acetic acid in such amount as to regulate the pH value of the solution to 3-4; and 3. soaking the ceramic filter material inside the modifying solution at room temperature, drying, stoving and cooling to obtain the lipophylic filtering material. Thus obtained lipophylic filtering material has the features of high oil eliminating rate, easy cleaning, high mechanical strength and long service life.

Description

technical field [0001] The invention relates to a preparation process of lipophilic filter material. Background technique [0002] At present, the common treatment process of oily wastewater is: oil separation-coagulation (air flotation)-filtration. Among them, walnut shell is mostly used as the filter material. Although it has good adsorption and lipophilicity, it is difficult to wash off the adsorbed oil with pure water during backwashing. Usually, a cleaning agent is required. At the same time, its particle size is large and its mechanical strength is low. Therefore, the service life is short, and generally needs to be replaced within half a year at most. Contents of the invention [0003] The purpose of the present invention is to provide a preparation process of lipophilic porous ceramic filter material with high oil removal rate, easy cleaning, high mechanical strength and long service life. [0004] In order to achieve the above object, the technical solution of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D39/06
Inventor 吴建锋于健李方文卢家喜徐晓虹王鹏
Owner WUHAN UNIV OF TECH
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