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Method for treating organic chemical waste water

A technology for chemical wastewater and wastewater, applied in chemical instruments and methods, water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problems of high production costs and achieve the effect of reducing treatment costs

Inactive Publication Date: 2010-06-16
JIANGSU SUJING GROUP +1
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Problems solved by technology

The hydroxyl radical (OH) in the Fenton oxidation method is the strongest inorganic oxidant except elemental fluorine, which can oxidize and decompose most of the organic matter in the wastewater, so the effect of the Fenton oxidation method on organic matter is good, but the Fenton oxidation method Need Fe in 2+ , high production cost

Method used

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Embodiment Construction

[0021] The invention is further explained below.

[0022] First introduce two indicators, BOD and COD, BOD is the abbreviation of Biochemical Oxygen Demand, biochemical oxygen demand, refers to the organic matter in the water is oxidized and decomposed due to the biochemical action of microorganisms in a period of time, usually five days, and the organic matter is inorganicized Or the total amount of dissolved oxygen in water consumed during gasification, also known as the five-day biochemical oxygen demand, recorded as BOD 5 , the larger the value of BOD, the more organic pollutants in the water, and the more serious the pollution; COD is the abbreviation of Chemical Oxygen Demand, which refers to the chemical oxygen demand, and refers to the amount of oxidant consumed when treating water samples with strong oxidants. It is an index indicating the amount of reducing substances in water. The reducing substances in water mainly refer to organic substances. Therefore, COD is an ...

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Abstract

The invention discloses a method for treating organic chemical waste water. In the method, after the pH value of the waste water is adjusted to 2.5-3.0, the organism which is hard to degrade is efficiently removed and the biochemical property of the waste water is enhanced through the aeration microelectrolysis, Fenton oxidization and coagulating sedimentation processes, and the Fe<2+> generated after the microelectrolysis reaction can be used for subsequent Fenton oxidization reaction, thereby reducing the treatment cost. The invention can be widely applied to treating various kinds of low concentration organic waste water which is hard to biodegrade, such as chemicals, pharmacy, and the like; and the treated water can directly reach the standard and be drained. The invention can also be used as a pretreatment method of the organic waste water with high concentration to improve the biochemical property of the waste water which is hard to biodegrade.

Description

technical field [0001] The invention relates to a method for treating organic chemical wastewater. Background technique [0002] The chemical industry produces a large amount of wastewater every year. Because of its high salinity, high toxicity, and difficulty in biodegradation, it has become a world-recognized problem. It has serious harm to the ecological environment and human health. It is also the most polluted and most difficult industrial wastewater in China. one. At present, there are many methods for treating organic chemical wastewater. For example, biological treatment methods can be used, but the wastewater contains toxic substances that inhibit the growth of microorganisms, so it is difficult for biological treatment methods to achieve better treatment effects; aeration micro-electrolysis, fen The Oxidation method, the aeration micro-electrolysis method is carried out in the iron-carbon reactor, and generally treats acidic wastewater. When iron particles and car...

Claims

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Application Information

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IPC IPC(8): C02F9/06C02F1/461C02F1/72
Inventor 李宇庆马楫马国斌陆叶华余杰
Owner JIANGSU SUJING GROUP
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