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Method for reducing chemical oxygen demand and colority of sewage plant effluent

A chemical oxygen demand, sewage plant technology, applied in the directions of oxidized water/sewage treatment, sterilization/microdynamic water/sewage treatment, etc. Degree and COD Effect

Inactive Publication Date: 2012-05-16
SHANGHAI CHEM IND PARK SINO FRENCH WATERDEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above three methods are not ideal for reducing the COD and chroma of sewage.

Method used

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  • Method for reducing chemical oxygen demand and colority of sewage plant effluent
  • Method for reducing chemical oxygen demand and colority of sewage plant effluent
  • Method for reducing chemical oxygen demand and colority of sewage plant effluent

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Embodiment Construction

[0016] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings. Wherein, the same reference numerals are used to represent the same elements, and the specific technical terms in the following description do not constitute substantial limitations on the technical solution of the present invention itself. In fact, various changes well known to those skilled in the art are permissible.

[0017] The invention proposes a technology for treating sewage by using ozone. In fact, ozone has a very obvious effect in sewage treatment. Ozone has a high oxidation ability, and its redox potential (standard electrode potential is 2.07mv) ranks second in nature. In addition to being lower than fluorine, it is higher than hydrogen peroxide, chlorine, chlorine dioxide, potassium permanganate and other oxidants. . In addition, ozone is also an effective decolorizing agent. Ozone generates OH and active oxygen in water, an...

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Abstract

The present invention provides a method for reducing chemical oxygen demand (COD) and colority of sewage plant effluent. The method comprises: adopting high purity oxygen as a gas source to generate high concentration ozone; adopting the high concentration ozone to carry out a high-grade oxidation treatment for the sewage plant effluent to reduce the COD and the colority. The purpose of the present invention is to reduce the colority and the COD of the sewage. In addition, with properly adjusting the effluent flow and the ozone production rate, the effective controls of the COD removal rate and the colority removal rate can be implemented.

Description

technical field [0001] The invention relates to an advanced sewage treatment technology, in particular to a method for removing chemical oxygen demand (COD, Chemical Oxygen Demand) and chromaticity of effluent from a sewage plant. Background technique [0002] Environmental protection is an important issue facing human society today. In particular, the treatment of sewage generated in urban life and industrial production is the top priority of environmental protection. Generally, the current mainstream sewage treatment plants mainly use sewage treatment technologies such as filtration, coagulation and sedimentation. However, the technical effects of the above three methods for reducing COD and chroma of sewage are not very ideal. [0003] COD (Chemical Oxygen Demand) is the amount of oxidant consumed when a certain strong oxidant is used to treat water samples under certain conditions. It is an indicator of the amount of reducing substances in water. Reducing substances ...

Claims

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Application Information

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IPC IPC(8): C02F1/78C02F1/50
Inventor 刘琴
Owner SHANGHAI CHEM IND PARK SINO FRENCH WATERDEV
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