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Fenton reaction system and method for treating organic pollutants in waste water by Fenton reaction system

A reaction system and reaction technology, applied in the field of organic pollutants, can solve the problems of reducing organic matter removal efficiency, increasing energy consumption, increasing operation complexity, etc., to reduce the burden of subsequent neutralization treatment, reduce operating costs, and save power consumption Effect

Active Publication Date: 2014-07-09
深圳市小荷环保技术有限公司
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Problems solved by technology

The reason why batch addition can improve the removal efficiency of Fenton oxidation is that after one-time dosage, ferrous iron will undergo self-consumption reaction through free radical competition and local free concentration is too high, thereby reducing the removal efficiency of organic matter
Its disadvantage is that it increases the complexity of the operation
Its disadvantage is that aeration and heating increase energy consumption

Method used

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  • Fenton reaction system and method for treating organic pollutants in waste water by Fenton reaction system
  • Fenton reaction system and method for treating organic pollutants in waste water by Fenton reaction system
  • Fenton reaction system and method for treating organic pollutants in waste water by Fenton reaction system

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Embodiment Construction

[0043] The present invention will be described in further detail below in conjunction with the accompanying drawings:

[0044] figure 1 , Figure 5 , Image 6 A first embodiment of the Fenton reaction system of the present invention is shown.

[0045] see figure 1 As shown, the Fenton reaction system includes the waste water whose pH is adjusted to 3 is pumped into the pipeline 92 through the feed pump 1, and the two first jets 21 and the second jets 22 connected in series with the pipeline 92 are respectively connected with After mixing the oxidant H2O2 30% in the Fenton reagent and the catalyst FeSO4 120g / L solution in the Fenton reagent inputted by the first metering pump 31 and the second metering pump 32, it flows into the check valve 4 through the check valve 4 in the pipeline. Connected vertical spiral coils 5 for mixing reactions, see Figure 5 , Image 6 As shown, the spiral coil 5 is wound on the outer wall of the reaction tank 6 from bottom to top, the water ...

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Abstract

The invention relates to a Fenton reaction system and a method for treating organic pollutants in waste water by the Fenton reaction system. The Fenton reaction system comprises an ejector, a coil pipe, and a reaction tank orderly connected through pipelines; waste water and a Fenton reagent are pumped into the ejector through a pipeline, is mixed with the Fenton reagent, flow into the coil pipe for a mixing reaction, and then flow into the reaction tank with a pressure adjusted by a needle valve for a Fenton reaction. The method for treating organic pollutants in waste water comprises: (1) adjusting the pH value of the waste water, pumping the waste water into the pipeline, mixing the waste water with an oxidant solution and a catalyst solution of the Fenton reagent respectively in the ejector, allowing the mixtures to flow into the spiral coil pipe for a mixing reaction; (2) allowing the product of the mixing reaction to flow into the reaction tank with a pressure adjusted by a needle valve for a Fenton reaction; (3) adjusting the pH value of the effluent of the reaction tank with alkaline liquor, performing precipitation, discharging sludge into a sludge workshop for treatment, and discharging the supernatant into a biochemical pool.

Description

technical field [0001] The invention relates to a Fenton reaction system and a method for using the Fenton reaction system to treat organic pollutants in wastewater. Background technique [0002] In 1894, H.Fenton found that hydrogen peroxide and ferrous ions can effectively oxidize and decompose tartaric acid in an acidic aqueous solution. This reagent is called Fenton's reagent, and the reaction using this reagent is called the Fenton reaction. In the process of Fenton reaction, OH with strong oxidizing property can be generated, and its redox potential is as high as 2.8V, which can react with most organic pollutants, completely destroy the structure of organic matter without selectivity, and finally generate CO2, H2O and inorganic salts. It has the advantages of fast reaction speed and no secondary pollution, and is widely used in the treatment of organic pollutants with high concentrations that are difficult to biodegrade. [0003] The traditional Fenton reaction has p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/72C02F9/14
Inventor 王丹丹陈福明吴思国
Owner 深圳市小荷环保技术有限公司
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