Composite material for treating heavy metal ions in wastewater

A technology of heavy metal ions and composite materials, applied in the field of composite materials for the treatment of heavy metal ions in wastewater, can solve the problems of limited synergy, large dosage, insufficient adsorption capacity, etc. Effect

Inactive Publication Date: 2020-12-04
朱晴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently commercially available adsorbents have poor stability and insufficient adsorption capacity. When applied to the treatment of heavy metal waste liquid, the amount used is large and the treatment cost is high.
[0007] Patent CN105692771B discloses a heavy metal sewage treatment material, using hydrochloric acid to modify sepiolite, pyridine quaternary ammonium salt type cationic polyacrylamide, zeolite powder, modified attapulgite, cellulose xanthate, chitosan, cross-linked Carboxymethyl starch, hydroxypropyl cellulose graft copolymer, ferric sulfate, lime powder, activated carbon powder, etc. time consuming

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for preparing a composite material for wastewater treatment. Firstly, nylon fiber and sulfur-modified bamboo fiber are blended into a fiber web according to a mass ratio of 1:4, and then the fiber web is amino-modified with triethylenediamine to obtain a modified fiber. net, and finally the modified fiber net is placed in the bacterial cellulose fermentation medium, inoculated with Acetobacter xylinum, fermented, and post-treated to obtain the composite material for waste water treatment; wherein the sulfur-modified bamboo fiber The bamboo fiber is modified by sulfur with 4mol / L ammonium sulfite solution.

[0029] The preparation method of the fiber web is as follows: firstly open the nylon fiber once, then mix it with the sulfur-modified bamboo fiber, open it three times after mixing, and finally card and lay the web to obtain the fiber web.

[0030] The technological conditions for carding are: feeding speed 0.6m / min, cylinder 1400m / min, upper doffer 18m / min,...

Embodiment 2

[0040] A method for preparing composite materials for wastewater treatment. Firstly, polyamide fiber and sulfur-modified bamboo fiber are blended into a fiber web according to a mass ratio of 1:6, and then the fiber web is amino-modified with triethylenediamine to obtain a modified fiber. net, and finally the modified fiber net is placed in the bacterial cellulose fermentation medium, inoculated with Acetobacter xylinum, fermented, and post-treated to obtain the composite material for waste water treatment; wherein the sulfur-modified bamboo fiber The bamboo fiber is modified by sulfur with 3mol / L ammonium sulfite solution.

[0041] The preparation method of the fiber web is as follows: the nylon fiber is opened twice, then mixed with the sulfur-modified bamboo fiber, and then opened twice after the mixing, and finally the fiber web is obtained by carding and laying.

[0042] The technological conditions for carding are: feeding speed 0.8m / min, cylinder 1300m / min, upper doffer...

Embodiment 3

[0052] A method for preparing a composite material for wastewater treatment. Firstly, nylon fiber and sulfur-modified bamboo fiber are blended into a fiber web according to a mass ratio of 1:5, and then the fiber web is amino-modified with triethylenediamine to obtain a modified fiber. net, and finally the modified fiber net is placed in the bacterial cellulose fermentation medium, inoculated with Acetobacter xylinum, fermented, and post-treated to obtain the composite material for waste water treatment; wherein the sulfur-modified bamboo fiber The bamboo fiber is modified by sulfur with 3mol / L ammonium sulfite solution.

[0053] The preparation method of the fiber web is as follows: firstly open the nylon fiber twice, then mix it with the sulfur-modified bamboo fiber, open it three times after mixing, and finally card and lay the web to obtain the fiber web.

[0054] The technological conditions for carding are: feeding speed 0.7m / min, cylinder 1350m / min, upper doffer 20m / min...

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PUM

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Abstract

The invention discloses a composite material for treating heavy metal ions in wastewater. The composite material is prepared by the following steps of: by using polyamide fibers and sulfur-modified bamboo fibers as raw materials, blending the raw materials to form a fiber net; carrying out amino modification on the fiber net by using triethylene diamine to obtain a modified fiber net; putting themodified fiber net into a bacterial cellulose fermentation culture medium; carrying out acetobacter xylinum inoculation, fermenting and after-treatment to obtain the composite material for wastewatertreatment. The composite material is suitable for heavy metal wastewater treatment and can adsorb and remove various heavy metal ions in a short time.

Description

[0001] This application is a divisional application, the application number of the original application is 202010280516.1, the application date is April 10, 2020, and the title of the invention is "a composite material for the treatment of heavy metal ions in wastewater and its preparation method". technical field [0002] The invention relates to the technical field of wastewater treatment, in particular to a composite material used for treating heavy metal ions in wastewater. Background technique [0003] With the rapid development of modern industry, the discharge of industrial wastewater has also increased sharply, the accumulation of heavy metals in water has intensified, and heavy metal pollution is serious, especially the large amount of wastewater produced in industrial production activities such as mining, electroplating, metallurgy, pharmaceuticals, chemicals, printing and dyeing, and papermaking. , containing mercury, silver, cadmium, copper, lead, nickel, zinc and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J20/30C02F1/28C12P19/04C12R1/02C02F101/20
CPCB01J20/28014C12P19/04C02F2101/20B01J20/24B01J20/22C02F1/286
Inventor 朱晴
Owner 朱晴
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