Water treatment method of zero-valent iron-copper bi-metal activated persulfate

A technology for activating persulfate and persulfate, which is applied in oxidation water/sewage treatment, polluted groundwater/leachate treatment, chemical instruments and methods, etc., to achieve good degradation effect, rapid removal, and efficient degradation.

Inactive Publication Date: 2016-01-20
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is to overcome the defects and deficiencies of the above-mentioned existing water pollution treatment technology, and provide a technology for effectively, economically and feasiblely removing micro-pollutants in water, that is, to use zero-valent iron-copper bimetallic activated persulfuric acid Salt removal technology for micro-pollutants in water. This technology can quickly remove pharmaceuticals and personal care products (PPCPs), algae toxins, pesticides, petroleum organic pollutants and various refractory organic substances in water. It can be applied to drinking water treatment , sewage advanced treatment, regenerated water treatment, industrial water treatment and groundwater treatment, etc., can well solve the problem of various toxic and harmful micro-pollutants that are often detected in drinking water, sewage, industrial wastewater, surface water, and groundwater.

Method used

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  • Water treatment method of zero-valent iron-copper bi-metal activated persulfate

Examples

Experimental program
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Effect test

Embodiment 1

[0034] The method for removing micro-pollutants in water by utilizing zero-valent iron-copper bimetal activation persulfate, the steps are as follows:

[0035] (1) Preparation of zero-valent iron-copper bimetal: adding zero-valent iron powder to a solution containing divalent copper (the copper salt solution needs to be prepared in advance), a rapid replacement reaction occurs to generate metallic copper element, which is attached to the iron surface. surface, forming an iron-copper bimetal.

[0036] (2) Add the prepared zero-valent iron-copper bimetal to the water containing micro-pollutants, and then add persulfate to complete the removal of micro-pollutants in the water.

[0037] Wherein, the molar ratio of the zero-valent iron to the persulfate is 1:1-40:1; the molar ratio of the zero-valent iron to the copper is 2:1-500:1.

Embodiment 2

[0039] The method for removing micro-pollutants in water by utilizing zero-valent iron-copper bimetal activation persulfate, the steps are as follows:

[0040] (1) Preparation of zero-valent iron-copper bimetal: adding scrap iron filings to a solution containing divalent copper (the copper salt solution needs to be prepared in advance), a rapid replacement reaction occurs to generate metallic copper element, which is attached to the surface of iron , forming an iron-copper bimetal.

[0041](2) Add the prepared zero-valent iron-copper bimetal to the water containing micro-pollutants, and then add persulfate to complete the removal of micro-pollutants in the water.

[0042] Wherein, the molar ratio of the zero-valent iron to the persulfate is 1:1-40:1; the molar ratio of the zero-valent iron to the copper is 2:1-500:1.

Embodiment 3

[0044] The method for removing micro-pollutants in water by utilizing zero-valent iron-copper bimetal activation persulfate, the steps are as follows:

[0045] (1) Preparation of zero-valent iron-copper bimetal: Add the solution containing divalent copper to the zero-valent iron filter column, and a rapid replacement reaction occurs to generate metallic copper element, which is attached to the surface of iron to form an iron-copper bimetallic filter. column.

[0046] (2) Add persulfate to the water containing micro-pollutants, and then filter the water through a zero-valent iron-copper bimetallic filter column to complete the removal of micro-pollutants in the water.

[0047] Wherein, the molar ratio of the zero-valent iron to the persulfate is 1:1-40:1; the molar ratio of the zero-valent iron to the copper is 2:1-500:1.

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Abstract

The invention discloses a water treatment method of zero-valent iron-copper bi-metal activated persulfate. The water treatment method specifically comprises the steps that bi-metals including zero-valent iron and copper are added into water containing micro-pollutants, then persulfate is added, full mixing is performed, the bi-metals including the zero-valent iron and the copper are utilized to activate the persulfate so as to remove the micro-pollutants in the water. The water treatment method utilizes the bi-metals including the zero-valent iron and the copper to efficiently activate the persulfate so as to produce free sulfate radicals having strong oxidizing property, can achieve the purpose of quickly and thoroughly removing micro-pollutants, including multiple types of poisonous and harmful micro-pollutants in water, such as polychlorinated biphenyl, brominated flame retardants, drugs and personal care products (PPCPs) and algal toxin, and has the advantages of high activation efficiency, high oxidation and degradation efficiency of pollutants, wide pH using range, convenient operation and the like. The water treatment method can be applied to underground water remediation, treatment of industrial water (including electroplating wastewater, hospital wastewater, printing and dyeing wastewater and the like), drinking water treatment, wastewater treatment and the like.

Description

technical field [0001] The invention belongs to the technical field of water body pollution treatment. More specifically, it relates to a water treatment method of zero-valent iron-copper bimetallic activated persulfate. Background technique [0002] In recent years, with the rapid development of industry and agriculture and the continuous improvement of people's living standards, more than 90% of my country's water bodies have been seriously polluted. A large number of toxic and harmful organic pollutants, such as: pharmaceuticals and personal care products (PPCPs), persistent organic pollutants (POPs), pesticides, petroleum organic pollutants, chemical products and other types of man-made chemicals are discharged into natural water bodies; At the same time, algal or bacterial growth in water bodies causes problems of algal toxins, smell, and endotoxins. [0003] The above-mentioned toxic and harmful pollutants pose a huge threat to the living environment of aquatic organ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F103/06C02F101/36C02F101/12C02F101/32
Inventor 方晶云望婷婷侯少东仇荣亮
Owner SUN YAT SEN UNIV
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