Waste water treatment method combining Fenton oxidization and microwave catalysis phase

A microwave catalysis and combination technology, applied in the field of water treatment, can solve the problems of incomplete treatment, large space required, long time for industrial wastewater and urban sewage treatment, etc. The effect of oxidation reaction effect

Inactive Publication Date: 2010-07-07
却力挥
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Problems solved by technology

[0007] The purpose of the present invention is to use Fenton's reagent to oxidize organic matter in industrial wastewater and urban sewage, and utilize microwave energy to catalyze the oxidation process to solve a series of problems such as long treatment time for industrial wastewater and urban sewage, incomplete treatment, and large space required.

Method used

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Examples

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Embodiment Construction

[0021] The following examples are used to illustrate the present invention in more detail, but not to limit the present invention.

[0022] Cotton pulp wastewater (including black liquor) is treated by the invention, the COD value of the effluent from the original aerobic pool is between 400mg / L and 850mg / L, and the chromaticity is 300 times. Wastewater flow rate is 450m 3 / h.

[0023] 1) First add concentrated sulfuric acid to the waste water to adjust the pH value of the waste water to PH=5.5;

[0024] 2) Then add Fenton's reagent and stir evenly, wherein, the dry amount of Fenton's reagent added is 3mg / COD;

[0025] 3) Then use a lift pump to make the waste water flow through the microwave field, wherein the microwave frequency of the microwave field is 915MHz, and the microwave power is 40kw;

[0026] 4) Finally, the waste water after the action of the microwave field is sequentially passed through the gas-water separator and the sedimentation tank for three-phase separ...

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Abstract

The invention discloses a method for treating industrial waste water by combining Fenton oxidization and a microwave catalysis phase. The method comprises the following steps of: adjusting the PH value of the waste water to be smaller than 6; adding a Fenton reagent and uniformly stirring; ensuring that the waste water with the added Fenton reagent flows through a microwave field; and ensuring that the waste water flowing through the microwave field is subjected to solid, liquid and gas three-phase separation, and if necessary, neutralizing and separating acid in obtained liquid. In the invention, the industrial waste water is continuously treated under a flowing condition by utilizing the modes of oxidizing organic matters in the industrial waste water by using the Fenton reagent and catalyzing an oxidizing reaction process by microwaves, thus the invention has the characteristics of short treatment time, good reaction effect, high COD (chemical oxygen demand) removal rate and space saving so as to truly realize the industrial application of the Fenton method.

Description

technical field [0001] The invention relates to a method for treating industrial wastewater and urban sewage, more specifically, a method for treating wastewater by combining Fenton oxidation and microwave catalysis, and belongs to the field of water treatment. Background technique [0002] Wastewater refers to the waste water, sewage and waste liquid produced in the process of industrial production and people's life. With the rapid development of industry, the types and quantities of wastewater have increased rapidly, and the pollution of water bodies has become increasingly widespread and serious, threatening human health and safety. Although the treatment of industrial wastewater started as early as the end of the 19th century, and a large number of experimental studies and production practices were carried out in the following half century, due to the complex composition and changeable nature of many industrial wastewater, there are still some technical problems that hav...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F1/30
Inventor 却力挥
Owner 却力挥
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