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Method for treating carbon tetrachloride in industrial wastewater

A technology of carbon tetrachloride and industrial wastewater, which is applied in the field of membrane separation and can solve problems such as waste and secondary pollution

Inactive Publication Date: 2017-01-18
HEFEI XINDA MEMBRANE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, distillation and chemical reagent neutralization are generally used, which will cause waste and secondary pollution.

Method used

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  • Method for treating carbon tetrachloride in industrial wastewater

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Embodiment Construction

[0017] In order to make it easier for those skilled in the art to understand the solution of the present invention, the technical solution of the present invention will be further specifically described in conjunction with specific embodiments.

[0018] Such as figure 1 Shown, technical scheme of the present invention is a kind of processing method of carbon tetrachloride in industrial waste water, and its treatment process is, waste water enters nanofiltration process after pretreatment (ultrafiltration treatment) removes the suspension of macromolecule, and concentrated solution passes through Carbon tetrachloride is removed by activated carbon adsorption, and the permeate is recycled after passing the inspection. If it fails, it will be re-treated by nanofiltration; the specific operation steps are as follows:

[0019] Step 1, the industrial wastewater is treated by ultrafiltration to remove suspended solids of macromolecules;

[0020] Step 2, removing the ultrafiltration ...

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Abstract

The invention discloses a method for treating carbon tetrachloride in industrial wastewater. The method comprises the specific operating steps that step one, ultrafiltration treatment is conducted on industrial wastewater to remove macromolecular suspended matter; step two, ultrafiltration membrane permeating liquid without macromolecules is subjected to the ultrafiltration treatment, and the obtained concentrated solution is subjected to treatment based on an activated carbon method; step three, if the ultrafiltration membrane permeating liquid in the step two is qualified through detection, the water can be recycled; and step four, if the liquid is not qualified, the liquid flows back for ultrafiltration treatment, the step two, the step three and the step four are repeated till the liquid is qualified. A wastewater membrane treatment technology and activated carbon adsorption treatment are integrated, the carbon tetrachloride removal rate is high, and no secondary pollution is produced.

Description

technical field [0001] The invention belongs to the technical field of membrane separation, and in particular relates to a method for treating carbon tetrachloride in industrial waste water. Background technique [0002] Carbon tetrachloride is a colorless liquid that can dissolve many substances such as fat and paint, and is a volatile and non-flammable liquid. With a slightly sweet smell of chloroform. Carbon tetrachloride is immiscible with water, and can react with water above 500 degrees Celsius to produce toxic phosgene and hydrochloric acid, and can be miscible with ethanol, ether, chloroform and petroleum ether. It can be decomposed into carbon dioxide, hydrogen chloride, phosgene and chlorine when exposed to fire or hot objects. Carbon tetrachloride is more harmful to the human body. The vapor of this product in high concentration has a mild stimulating effect on the mucous membrane, has an anesthetic effect on the central nervous system, and has serious damage to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02C02F101/36
CPCC02F9/00C02F1/283C02F1/442C02F1/444C02F2101/36
Inventor 李胜明王海波储振国
Owner HEFEI XINDA MEMBRANE TECH