Double-layer foaming composite adsorption film for sewage treatment and preparation method thereof

A composite adsorption and sewage treatment technology, applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of single adsorption type, low adsorption efficiency, and low labor efficiency, and achieve High adsorption efficiency, many adsorption channels, and the effect of improving labor efficiency

Inactive Publication Date: 2018-08-10
CHENDU NEW KELI CHEM SCI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] It can be seen that the method of directly blending the adsorption filler into the resin in the prior art has problems such as uneven dispersion, low adsorption efficiency,

Method used

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  • Double-layer foaming composite adsorption film for sewage treatment and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] a. Mixing foaming agent with porous ceramics, forming a polyvinyl alcohol film layer on the surface of the mixed particles by spray precipitation method, to obtain foaming agent / porous ceramic microcapsules;

[0035] b, mixing foaming agent with diatomite, adopting spray precipitation method to form polyvinyl alcohol film layer on the surface of mixed particles, making foaming agent / diatomite microcapsule;

[0036] c, mixing the foaming agent / porous ceramic microcapsules prepared in step a with polyurethane prepolymer and ethylene / vinyl acetate copolymer to prepare mixture A;

[0037] d, mixing the blowing agent / diatomite microcapsules prepared in step b with polyurethane prepolymer and ethylene / vinyl acetate copolymer to prepare mixture B;

[0038]e. Extrude compound A and compound B through double-layer co-extrusion equipment to form a film, and obtain a double-layer film composed of polyurethane and ethylene / vinyl acetate copolymer, which is a double-layer film for s...

Embodiment 2

[0043] a. Mixing foaming agent with porous ceramics, forming a polyvinyl alcohol film layer on the surface of the mixed particles by spray precipitation method, to obtain foaming agent / porous ceramic microcapsules;

[0044] b, mixing foaming agent with diatomite, adopting spray precipitation method to form polyvinyl alcohol film layer on the surface of mixed particles, making foaming agent / diatomite microcapsule;

[0045] c, mixing the foaming agent / porous ceramic microcapsules prepared in step a with polyurethane prepolymer and ethylene / vinyl acetate copolymer to prepare mixture A;

[0046] d, mixing the blowing agent / diatomite microcapsules prepared in step b with polyurethane prepolymer and ethylene / vinyl acetate copolymer to prepare mixture B;

[0047] e. Extrude compound A and compound B through double-layer co-extrusion equipment to form a film, and obtain a double-layer film composed of polyurethane and ethylene / vinyl acetate copolymer, which is a double-layer film for ...

Embodiment 3

[0052] a. Mixing foaming agent with porous ceramics, forming a polyvinyl alcohol film layer on the surface of the mixed particles by spray precipitation method, to obtain foaming agent / porous ceramic microcapsules;

[0053] b, mixing foaming agent with diatomite, adopting spray precipitation method to form polyvinyl alcohol film layer on the surface of mixed particles, making foaming agent / diatomite microcapsule;

[0054] c, mixing the foaming agent / porous ceramic microcapsules prepared in step a with polyurethane prepolymer and ethylene / vinyl acetate copolymer to prepare mixture A;

[0055] d, mixing the blowing agent / diatomite microcapsules prepared in step b with polyurethane prepolymer and ethylene / vinyl acetate copolymer to prepare mixture B;

[0056] e. Extrude compound A and compound B through double-layer co-extrusion equipment to form a film, and obtain a double-layer film composed of polyurethane and ethylene / vinyl acetate copolymer, which is a double-layer film for ...

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Abstract

The invention discloses a double-layer foaming composite adsorption film for sewage treatment and a preparation method thereof. The double-layer foaming composite adsorption film is prepared from thefollowing steps of a, preparing a foaming agent/porous ceramic micro capsule; b, preparing a foaming agent/diatomite micro capsule; c, mixing the foaming agent/porous ceramic micro capsule with polyurethane prepolymers and ethylene/vinyl acetate copolymers to prepare a mixture A; d, preparing the foaming agent/diatomite micro capsule by a method in the step c to obtain a mixture B; e, extruding the mixture A and the mixture B through double-layer co-extrusion equipment to form the film; obtaining the double-layer foaming composite adsorption film for sewage treatment. The prepared double-layerfoaming composite adsorption film with fine and small hole diameter and complicated and many passages has the advantages that the dispersion of adsorption filling materials is uniform; the adsorptionpassages are many; the adsorption efficiency is high; in addition, different adsorption layers have the adsorption selectivity; the types of adsorbed pollutants are many; the industrial production and application are easy.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to the preparation of an adsorption membrane, in particular to a double-layer foamed composite adsorption membrane for sewage treatment and a preparation method thereof. Background technique [0002] As water resources that restrict human survival and economic development are protected to a greater extent, water pollution control has also received high attention. Relevant studies have shown that among the pollutants that cause water pollution, heavy metals dominate, and some heavy metals are harmful to human health and The ecological environment poses a serious threat. In particular, some chemical wastewater contains toxic or highly toxic substances such as cyanide, phenol, arsenic, mercury, cadmium or lead, as well as irritating and corrosive substances such as inorganic acids and alkalis. Microorganisms have toxic effects. [0003] Various harmful substances in wastewater are oft...

Claims

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Application Information

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IPC IPC(8): C02F1/28B01J20/26B01J20/30B01J20/28C02F101/20
CPCC02F1/28B01J20/14B01J20/264B01J20/28033B01J20/28078C02F1/281C02F1/285C02F2101/20
Inventor 陈庆昝航
Owner CHENDU NEW KELI CHEM SCI CO LTD
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