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Sludge treatment method for catalyzing hypochlorite by plasma

A technology for catalyzing hypochlorite and plasma, applied in electrochemical sludge treatment, sludge treatment, water/sludge/sewage treatment, etc., can solve the problems of secondary pollution and achieve the effect of strong oxidizing ability

Inactive Publication Date: 2018-09-18
江苏沃青环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of secondary pollution caused by the organic pollutants carried in the sludge, and to provide a simple, efficient and wider application range of sludge harmless treatment technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1: In the reaction chamber, adjust the moisture content of the sludge to 94%; transport NaClO with a mass of 43.3% of the mud-water mixture into the reaction chamber; and use a high-frequency high-voltage electric field to excite industrial steam to generate plasma to generate a reaction at 350°C and 13MPa Conditions: Under the catalysis of the above-mentioned high temperature, high pressure and plasma, sodium hypochlorite molecules generate a large number of oxychlorine free radicals and chlorine free radicals in water, which fully contact and react with organic pollutants in the mud-water mixture; detect the COD of the mud-water mixture after reacting for 90 minutes; The above sludge-water mixture is dehydrated to obtain the final sludge product.

[0017] Test result: COD=58900mg / L before mud-water mixture treatment

[0018] COD=68mg / L after mud-water mixture treatment

[0019] It can be seen from the test results that the removal rate of organic pollutants i...

Embodiment 2

[0020] Example 2: In the reaction chamber, adjust the moisture content of the sludge to 95%; transport NaClO with a mass of 43.3% of the mud-water mixture into the reaction chamber; and use a high-frequency high-voltage electric field to excite industrial steam to generate plasma to generate a reaction at 390°C and 15MPa Conditions: Under the catalysis of the above-mentioned high temperature, high pressure and plasma, sodium hypochlorite molecules generate a large number of oxychlorine free radicals and chlorine free radicals in water, which fully contact and react with organic pollutants in the mud-water mixture; detect the COD of the mud-water mixture after 70 minutes of reaction; The above sludge-water mixture is dehydrated to obtain the final sludge product.

[0021] Test result: COD=58900mg / L before mud-water mixture treatment

[0022] COD=59mg / L after mud-water mixture treatment

[0023] It can be seen from the test results that the removal rate of organic pollutants in...

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PUM

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Abstract

The invention discloses a sludge treatment method for catalyzing hypochlorite by plasma, and belongs to the field of solid waste treatment in environmental engineering. The method is mainly used for solving the problem of secondary pollution caused by organic pollutants brought in sludge, the key point for solving the problem comprises: the sludge moisture content is adjusted to 94%-95% in a reaction chamber; hypochlorite as an oxidant is transported into the reaction chamber; reaction conditions of the temperature of 350-390 DEG C and the pressure of 13-15 MPa are generated by a way of stimulating industrial steam to generate plasma by a high-frequency and high-voltage electric field. The hypochlorite can produce a large amount of oxygen-chlorine free radicals and chlorine free radicals in water under the high temperature, high pressure and the catalysis of plasma and has strong oxidation ability; various organic pollutants in sludge can be subjected to oxygenolysis for 70-90 minutes;and the final sludge product is obtained by dehydration.

Description

technical field [0001] The invention relates to the field of solid waste treatment in environmental engineering, in particular to a sludge treatment method using plasma to catalyze hypochlorite. Background technique [0002] With the acceleration of my country's urbanization process, the water consumption of urban residents and industries has increased sharply, and the subsequent sewage discharge has also increased day by day, which has led to the increasingly serious water pollution situation in my country. At the same time, sludge, as a by-product in the sewage treatment process, has gradually been valued by the state and local governments. [0003] However, because the sludge contains a large amount of organic pollutants, especially the high molecular organic pollutants contained in the sludge produced by industrial sewage treatment, it often leads to secondary pollution to the environment. [0004] Therefore, it is necessary to carry out a certain degree of harmless tre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/00C02F11/06C02F101/30
CPCC02F11/006C02F11/06C02F2101/30
Inventor 殷衡
Owner 江苏沃青环保科技有限公司