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A filter material for purifying organic-inorganic composite polluted water and its preparation method and application

An inorganic composite and polluted water technology, which is applied in the direction of chemical instruments and methods, separation methods, water pollutants, etc., can solve the problem of preparation of organic-inorganic composite polluted water, report on regeneration and utilization methods, and regeneration of filter materials. Taking advantage of weak technology and other problems, it can achieve the effects of easy recycling, stable properties, and simple preparation process

Active Publication Date: 2021-02-09
YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] After searching the existing technical documents, it is found that the development of water purification filter materials mainly focuses on how to improve the removal of single types of pollutants such as organic pollutants or inorganic pollutants, and the supporting filter material recycling technology relatively weak
So far, there has been no report on the preparation and regeneration of organic-inorganic composite polluted water purification filter materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Use acetone to dissolve cellulose acetate, then add simethicone dispersant and mix well, so that the final concentration of dispersant in the solution is 0.1% by mass, and after mixing evenly, add additives in proportion—magnesium perchlorate, anhydrous Sodium sulfate and glyceryl trioleate were thoroughly mixed at 35°C for 10 hours to obtain a composite membrane liquid, which was ready for use. Wherein, cellulose acetate: acetone: magnesium perchlorate: anhydrous sodium sulfate: triolein=1.6:20:0.5:0.2:3 (mass ratio);

[0026] Soak the purchased ceramsite filter material in an aqueous solution of 1% calcium lignosulfonate for 10 hours, wash with water until the water body is in a clear state, dry it, add 500g / L to the above-mentioned composite membrane solution, and stir Mixing collects solid matter; Then join in the 6wt% chitosan dilute acid (1% acetic acid) aqueous solution that contains sodium gluconate and PEG1000, wherein sodium gluconate: PEG1000: the mass ratio ...

Embodiment 2

[0031] Use acetone to dissolve cellulose acetate, then add simethicone dispersant and mix well, so that the final concentration of dispersant in the solution is 0.1% by mass, and after mixing evenly, add additives in proportion—magnesium perchlorate, anhydrous Sodium sulfate and glyceryl trioleate were thoroughly mixed at 30°C for 6 hours to obtain a composite membrane liquid, which was ready for use. Wherein, cellulose acetate: acetone: magnesium perchlorate: anhydrous sodium sulfate: triolein = 1: 10: 0.3: 0.12: 4 (mass ratio);

[0032] Soak the purchased ceramsite filter material in an aqueous solution of 1% calcium lignosulfonate for 24 hours, wash it with water until the water body is in a clear state, dry it, add it to the above-mentioned composite membrane solution in an amount of 1000g / L, and stir Mix and collect solid matter; Then join in the 1wt% chitosan dilute acid (2% acetic acid) aqueous solution that contains sodium gluconate and PEG1000, wherein sodium gluconat...

Embodiment 3

[0037] Use acetone to dissolve cellulose acetate, then add simethicone dispersant and mix well, so that the final concentration of dispersant in the solution is 0.1% by mass, and after mixing evenly, add additives in proportion—magnesium perchlorate, anhydrous Sodium sulfate and glyceryl trioleate were thoroughly mixed at 40°C for 24 hours to obtain a composite membrane liquid, which was ready for use. Wherein, cellulose acetate: acetone: magnesium perchlorate: anhydrous sodium sulfate: glyceryl trioleate=2:35:0.2:0.1:0.2 (mass ratio);

[0038] Soak the purchased ceramsite filter material in an aqueous solution of 1% calcium lignosulfonate for 4 hours, wash it with water until the water body is in a clear state, dry it, add it to the above-mentioned composite membrane solution in an amount of 800g / L, and stir Mix and collect solid matter; Then join in the 10wt% chitosan dilute acid (1.5% hydrochloric acid) aqueous solution that contains sodium gluconate and PEG1000, wherein so...

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Abstract

The invention relates to the technical field of environmental protection, in particular to a filter material for purifying organic-inorganic composite polluted water and its preparation method and application. Dissolve cellulose acetate in acetone, add simethicone dispersant and mix evenly, then add mixed additives, fully mix at 30-40°C for 6-48 hours to obtain a composite film solution, and then add 500-1000g / L Add the treated filter material carrier, stir and mix to obtain the filter material loaded with composite membrane liquid; add the filter material loaded with composite membrane liquid to the chitosan dilute acid aqueous solution containing sodium gluconate and PEG1000, and mix well to obtain Water-purifying filter material: the water-purifying filter material obtained by the method of the invention is stable in property, and can simultaneously remove various organic and inorganic pollutants in water with excellent performance.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a filter material for purifying organic-inorganic composite polluted water and its preparation method and application. Background technique [0002] For a long time, adsorption and flocculant addition have been the most important water treatment methods to remove lipophilic and hydrophilic pollutants, and have been widely used in various water supply or wastewater treatment. Due to its well-developed pore structure and large specific surface area, activated carbon is widely used as an adsorbent in drinking water and sewage treatment. However, activated carbon lacks selectivity in the adsorption of organic matter in water and is easily saturated. It needs to be continuously regenerated during use, and the effect of removing low-concentration organic matter is poor. It is not ideal for the removal of low-level and lipophilic pollutants in conventional water bodies....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/30B01J20/24C02F1/28C02F101/20C02F101/30
CPCB01D39/14B01D39/16B01D39/1615B01J2220/46C02F1/285C02F1/286C02F2101/20C02F2101/30
Inventor 吕剑张翠武君张宇轩
Owner YANTAI INST OF COASTAL ZONE RES CHINESE ACAD OF SCI
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