Method and equipment for quickly treating high-COD-value sewage by Fenton reaction

Abstract

The invention discloses equipment for quickly treating high-COD-value sewage by Fenton reaction. The equipment comprises a sewage filter system, a pH control system, a mixing stirring system, a high-precision flow control system, an ultrasonic augmented reaction system, a storage container, an ageing stirring system and a sludge treatment system, wherein sewage firstly enters the sewage filter system and enters flows into the pH control system; the pH control system is connected with the mixing stirring system; the mixing stirring system and the storage container are connected with a charge hole of the ultrasonic augmented reaction system through the high-precision flow control system; the ageing stirring system is connected with a discharge hole of the ultrasonic augmented reaction systemthrough a connecting tube; and sewage which is reacted and treated flows out through the ageing stirring system, and enters into the sludge treatment system. The invention further discloses a methodfor treating high-COD-value sewage by the device. The method has the characteristics of being continuous, saving a medicament, being simple to operate, being strong in controllability, being efficientand energy-saving, being small in occupied area and the like.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and relates to equipment for treating high COD values ​​by adopting Fenton reaction, in particular to a method and equipment for rapidly treating high COD values ​​by adopting Fenton reaction. Background technique [0002] In chemical wastewater, COD is often high and contains a large amount of refractory substances, such as benzene rings, heterocycles, etc. Direct discharge will seriously damage and affect the ecological environment. [0003] Industrial wastewater with high COD value generally needs to be pretreated before entering the biochemical system, and the Fenton process, as an effective pretreatment process, is widely used in the treatment process of chemical wastewater. The Fenton process mainly controls the appropriate reaction conditions, adding hydrogen peroxide and ferrous sulfate to the sewage to form hydroxyl radicals, oxidize the reducing substances in the sewage, and ac...

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Problems solved by technology

[0006] Aiming at the technical problems of the current Fenton reaction treatment process and equipment, such as long processing time, large site occupation area, large consumption of chemicals, and low COD removal rate, the present invention discloses a method and equipment for rapidly treating high COD values ​​by using Fenton reaction, It has the advantages of fast response speed, strong controllability, saving chemicals, high COD removal rate, and small footprint. It is especially suitable for industrial large-scale treatment of various high COD value sewage applications.

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