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Treatment process for heavy metal sewage

A treatment process and heavy metal technology, applied in water/sewage treatment, biological water/sewage treatment, adsorption water/sewage treatment, etc., can solve the problems of low adsorption capacity, low heavy metal adsorption efficiency, poor sewage treatment effect, etc., to achieve Increased adsorption capacity, good biocompatibility, enhanced chelation effect

Active Publication Date: 2017-11-07
衡水睿韬环保技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It solves the problems of low heavy metal adsorption efficiency, small adsorption amount and poor sewage treatment effect in the process of sewage treatment

Method used

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  • Treatment process for heavy metal sewage

Examples

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Effect test

Embodiment 1

[0027] A treatment process for heavy metal sewage, comprising the steps of:

[0028] 1) Pretreatment of sedimentation and decolorization of sewage to be treated;

[0029] 2) Add the compound of magnetotactic bacteria and gel to the pretreated sewage, and mix it thoroughly to achieve the adsorption balance of heavy metals;

[0030] 3) Separating the complex of magnetotactic bacteria and gel with an external magnetic field to achieve the purpose of removing heavy metals and purifying sewage;

[0031] 4) Place the complex of the isolated magnetotactic bacteria and gel in an electric field for electrolytic reduction and replacement of simple metals, so as to realize the recycling of the complex of heavy metals, magnetotactic bacteria and gel.

[0032] The gel is composed of the following components in parts by weight: chitosan 40, epichlorohydrin 40, β -cyclodextrin 40, polyvinyl alcohol 30, sodium alginate 20, amino acid 10, sodium carboxymethylcellulose 0.3, graphene oxide 40,...

Embodiment 2

[0040] A treatment process for heavy metal sewage, comprising the steps of:

[0041] 1) Pretreatment of sedimentation and decolorization of sewage to be treated;

[0042] 2) Add the compound of magnetotactic bacteria and gel to the pretreated sewage, and mix it thoroughly to achieve the adsorption balance of heavy metals;

[0043] 3) Separating the complex of magnetotactic bacteria and gel with an external magnetic field to achieve the purpose of removing heavy metals and purifying sewage;

[0044] 4) Place the complex of the isolated magnetotactic bacteria and gel in an electric field for electrolytic reduction and replacement of simple metals, so as to realize the recycling of the complex of heavy metals, magnetotactic bacteria and gel.

[0045] The gel is composed of the following components in parts by weight: chitosan 100, epichlorohydrin 100, β -cyclodextrin 100, polyvinyl alcohol 60, sodium alginate 50, amino acid 30, sodium carboxymethylcellulose 0.3, graphene oxide ...

Embodiment 3

[0053] A treatment process for heavy metal sewage, comprising the steps of:

[0054] 1) Pretreatment of sedimentation and decolorization of sewage to be treated;

[0055] 2) Add the compound of magnetotactic bacteria and gel to the pretreated sewage, and mix it thoroughly to achieve the adsorption balance of heavy metals;

[0056] 3) Separating the complex of magnetotactic bacteria and gel with an external magnetic field to achieve the purpose of removing heavy metals and purifying sewage;

[0057] 4) Place the complex of the isolated magnetotactic bacteria and gel in an electric field for electrolytic reduction and replacement of simple metals, so as to realize the recycling of the complex of heavy metals, magnetotactic bacteria and gel.

[0058] The gel is composed of the following components in parts by weight: chitosan 70, epichlorohydrin 70, graphene oxide 70, β - Cyclodextrin 70, polyvinyl alcohol 45, sodium alginate 35, amino acid 20, sodium carboxymethylcellulose 0.4...

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Abstract

The invention discloses a treatment process for heavy metal sewage. The process includes the steps of (1) conducting pretreatment including sediment and decolorization on the sewage to be treated; (2) adding a compound of magnetotactic bacteria and gel into the sewage after pretreatment and fully blending the mixture to achieve adsorption equilibrium of heavy metal; (3) using an external magnetic field to separate the compound of the magnetotactic bacteria and the gel to achieve the purposes of removing the heavy metal and purifying the sewage; (4) placing the separated compound of the magnetotactic bacteria and the gel in an electric field for electrolytic reduction to replace metal simple substances and achieve cyclic utilization of the heavy metal and the compound of the magnetotactic bacteria and the gel. The gel adopted in the process can achieve chelation and adsorption of metal ions, and is high in adsorption amount, excellent in adsorption capability and capable of being widely applied to comprehensive treatment of the sewage.

Description

technical field [0001] The invention relates to a sewage treatment process, in particular to a heavy metal sewage treatment process. Background technique [0002] With the rapid development of modern industrial industries and rapid economic growth, a large amount of sewage containing heavy metals will be produced in industrial industries such as electroplating, electronics, mineral processing, metallurgy, chemical industry and automobiles, and the discharge of sewage containing heavy metals will be harmful to human health and industry. Agricultural production wreaks havoc. In nature, heavy metal ions do not have the ability of self-purification and biodegradation. Once heavy metal ions enter the natural environment, they will pollute water, soil and the atmosphere, and can be continuously enriched through the biological chain, and can even be absorbed by plants and endanger them through the food chain. human health. With the increasing frequency of human industrial product...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F101/20
CPCC02F1/28C02F1/4676C02F1/52C02F3/34C02F3/348C02F9/00C02F2001/007C02F2101/20
Inventor 冯婷婷
Owner 衡水睿韬环保技术有限公司
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