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A kind of hydrophilic polymer cross-linked membrane modified textile for oil-water separation and preparation method thereof

A hydrophilic polymer, oil-water separation technology, applied in the field of oily wastewater treatment, can solve the problems of large energy loss, secondary pollution of water body, complex process, etc.

Active Publication Date: 2021-09-28
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the separation method of this patent is too complicated, the energy loss is too large, and a demulsifier needs to be added during the demulsification process, resulting in secondary pollution of the water body
[0004] The present invention mainly aims at the problems of complex process, secondary pollution and high energy consumption in the separation of emulsified oil in the prior art, and aims to prepare a separation membrane capable of effectively separating emulsified oil to achieve the effect of efficiently separating emulsified oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A method for preparing a hydrophilic polymer cross-linked membrane modified textile for oil-water separation, comprising the following steps:

[0042] a. Hydrophilic treatment of microfiber web

[0043] First, chitosan is made into an acidic aqueous solution with a mass concentration of 0.6 g / L for use; secondly, the polyphenylene sulfide melt-blown microfiber web and chitosan acidic aqueous solution are cross-linked at room temperature to couple A treatment agent to form a super-hydrophilic fiber network of chitosan cross-linked on the surface of melt-blown polyphenylene sulfide microfibers.

[0044] b. The preparation of the hydrophilic polymer cross-linked membrane modified textile used for oil-water separation will be 1860g / m through the grammage prepared by a step 2 The hydrophilic melt-blown polyphenylene sulfide ultrafine fiber web is hot-rolled to obtain a super-hydrophilic melt-blown polyphenylene sulfide ultrafine fiber emulsion separation membrane with a thi...

Embodiment 2

[0047] A method for preparing a hydrophilic polymer cross-linked membrane modified textile for oil-water separation, comprising the following steps:

[0048] a. Hydrophilic treatment of microfiber web

[0049]First, the polyvinyl alcohol is made into an aqueous solution with a mass concentration of 0.4 g / L for use; secondly, the polyphenylene sulfide melt-blown microfiber web and the polyvinyl alcohol aqueous solution are cross-linked at room temperature, and the coupling treatment agent , forming a hydrophilic fiber network of polyvinyl alcohol cross-linked on the surface of melt-blown polyphenylene sulfide microfibers.

[0050] b. Preparation of hydrophilic polymer cross-linked membrane modified textiles for oil-water separation

[0051] The gram weight prepared by step a is 846g / m 2 The hydrophilic melt-blown polyphenylene sulfide ultrafine fiber web is hot-rolled to obtain a hydrophilic melt-blown polyphenylene sulfide ultrafine fiber emulsion separation membrane with a ...

Embodiment 3

[0054] A method for preparing a hydrophilic polymer cross-linked membrane modified textile for oil-water separation, comprising the following steps:

[0055] a. Hydrophilic treatment of microfiber web

[0056] First, the polyvinyl alcohol is made into an aqueous solution with a mass concentration of 0.7g / L for use; secondly, the polyphenylene sulfide melt-blown microfiber web and the polyvinyl alcohol aqueous solution are cross-linked at room temperature, and the coupling treatment agent , forming a hydrophilic fiber network of polyvinyl alcohol cross-linked on the surface of melt-blown polyphenylene sulfide microfibers.

[0057] c. Preparation of hydrophilic polymer cross-linked membrane modified textiles for oil-water separation

[0058] The gram weight prepared by step a is 1090g / m 2 The hydrophilic melt-blown polyphenylene sulfide ultrafine fiber web is hot-rolled to obtain a hydrophilic melt-blown polyphenylene sulfide ultrafine fiber emulsion separation membrane with a...

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Abstract

The invention discloses a hydrophilic polymer cross-linked membrane modified textile for oil-water separation and a preparation method thereof. The melt-blown ultra-fine fiber web is prepared by hot-rolling the hydrophilic-treated melt-blown ultra-fine fiber web. Fiber emulsion separation membrane. The invention has the characteristics of simple preparation process, low production cost, etc. The prepared melt-blown ultra-fine fiber emulsion separation membrane, that is, a hydrophilic polymer cross-linked membrane modified textile used for oil-water separation, has a water flux under the condition of gravity. Large, the emulsion separation efficiency is high, and it can also be recycled. The melt-blown ultrafine fiber emulsion separation membrane prepared by the invention can be widely used in the fields of oily wastewater treatment and the like.

Description

technical field [0001] The invention belongs to the field of oily wastewater treatment and the like, and in particular relates to a hydrophilic polymer cross-linked membrane modified textile for oil-water separation and a preparation method thereof. Background technique [0002] With the acceleration of industrialization, environmental pollution is becoming more and more serious, and environmental protection has become a global concern. Oil is a non-renewable resource, and its recovery can increase the comprehensive value of oil substances. The state of oil in water can be divided into: slick oil, dispersed oil, emulsified oil. Compared with slick oil and dispersed oil, emulsified oil is not a single oil component, and the average diameter of oil particles is between 0.1-10um. The main reason for the formation of emulsified oil is that it is affected by other chemical substances in the water body, such as some surfactants, Existing in the original water body, due to the jo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D17/022D06M15/333D06M15/03D06M101/30D06M101/32D06M101/20
CPCB01D17/0202D06M15/03D06M15/333D06M2101/20D06M2101/30D06M2101/32
Inventor 王罗新余严黄浩林盼龙刘曼许静王桦
Owner WUHAN TEXTILE UNIV