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Device and method for treating organic waste water through combination of anode filter bed and cathode filter bed

A technology of organic sewage and combined treatment, applied in chemical instruments and methods, water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of uncompetitive industrial application, slow reaction, expensive precious metal electrodes, etc. The effect of improved biodegradability of wastewater, mild reaction conditions and improved biodegradability

Active Publication Date: 2013-05-08
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0005] However, the current research shows that the Electro-Fenton electrochemical oxidation technology is still difficult to be widely used in industry due to the following problems. (1) Electro-Fenton electrochemical oxidation technology has few types of electrodes for treating organic wastewater
Although noble metal electrodes have a good removal effect on refractory organic matter, noble metal electrodes are expensive and easily poisoned and lose their electrocatalytic activity.
(2) The electrode generates H 2 o 2 The reaction is slow, the output is low, and the effect of treating high-concentration sewage is not good; (3) The mass transfer problem of the traditional electrolytic reaction device has not been well resolved
Mass transfer factors limit the electrode reaction rate, resulting in low electrocatalytic efficiency, high energy consumption and economic costs, and are not competitive for industrial applications

Method used

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  • Device and method for treating organic waste water through combination of anode filter bed and cathode filter bed
  • Device and method for treating organic waste water through combination of anode filter bed and cathode filter bed
  • Device and method for treating organic waste water through combination of anode filter bed and cathode filter bed

Examples

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Embodiment 1

[0027] Embodiment 1: A device and method for jointly treating coal gasification wastewater with an anode filter bed and a cathode filter bed, the specific operations are as follows:

[0028] 1. Coal gasification wastewater

[0029] Wastewater discharge during coal gasification has always been the top priority in the prevention and control of environmental pollution in the coal chemical industry. Wastewater discharged from coal gasification mainly comes from the washing water, gas washing water, and steam diversion water in each gasification section that dissolves the coal gasification process. Produced water-soluble pollutants, including ammonia, phenol, volatile phenol, petroleum, sulfide, cyanide, SS, etc. The wastewater discharged from coal gasification has a wide variety of pollutants, including high concentrations of non-suspended solids and dissolved solids, and contains characteristic pollutants of gasification processes such as ammonia nitrogen, sulfide, and cyanide....

Embodiment 2

[0041] Embodiment 2: the device and the method for coking waste water combined treatment of anode filter bed and cathode filter bed, specific content is as follows:

[0042] 1. Coking wastewater

[0043] Coking wastewater is a kind of extremely harmful industrial wastewater, which is produced in the process of high-temperature carbonization of raw coal, gas purification and refining of chemical products. The pollutants in wastewater are various and complex, and most of them are toxic organic substances that are difficult to degrade. Among them, the organic substances are mainly polycyclic and heterocyclic aromatic hydrocarbons such as phenols, quinolines, naphthalene, anthracene, etc., and the inorganic substances are mainly ammonia nitrogen compounds.

[0044] At present, the treatment of coking wastewater usually adopts multi-stage treatment technology dominated by biological methods, and the indicators such as chromaticity, COD and NH3-N are treated step by step step by ...

Embodiment 3

[0053] Embodiment 3: the device and the method for combined treatment of printing and dyeing wastewater by the anode filter bed and the cathode filter bed, the specific contents are as follows:

[0054] 1. Printing and dyeing wastewater

[0055] Printing and dyeing wastewater has the characteristics of large water volume, high chroma, strong alkalinity, and high organic matter content, and is an important source of water environmental pollution. Wastewater often contains dyes, additives, oils, acids and bases, fiber impurities and inorganic salts. With the development of modern industry and the progress of printing and dyeing processing technology, a large number of new printing and dyeing auxiliaries, dyes, PVA slurry and other difficult-to-biodegradable organic substances are widely used in the printing and dyeing industry, resulting in the stability of dyes in printing and dyeing wastewater. The composition becomes more and more complex and changeable, the BOD / COD ratio ...

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Abstract

The invention discloses a device and a method for treating organic waste water through combination of an anode filter bed and a cathode filter bed. The device is used for treating poisonous and organic waste water with high concentration by using an electrochemical oxidation process through combination of the anode filter bed and the cathode filter bed so as to realize effective degradation of the organic waste water, wherein pollutants in the waste water undergo oxidation reaction in the anode filter bed to be oxidized and degraded, and simultaneously a packing filled in the anode filter bed has adsorption, interception and degradation effects on the organic pollutants; a special cathode material is adopted in the cathode filter bed, and the pollutants can be oxidized and degraded through strong oxidizing property of the special cathode material capable of generating lots of OH free radicals; through application of the device, a manner of horizontally arranging electrodes according to a conventional electrolytic process is changed, and the electrodes are vertically connected in series, and the vertical series connection contributes to effective degradation of the waste water in two stages; the device is wide in the range of application and can be used for pretreatment and advanced treatment in an organic waste water biochemical treatment process and single electrolysis of the high-concentration organic waste water; and the device can promote realization of pollution control on the organic waste water.

Description

technical field [0001] The invention relates to a device for treating high-concentration toxic organic sewage, in particular to a device for jointly treating high-concentration toxic organic sewage with an anode filter bed and a cathode filter bed, belonging to the field of pollution control of high-concentration organic sewage. Background technique [0002] Wastewater discharged from industries such as pharmaceuticals, dyes, and chemicals usually contains high concentrations of organic substances that are difficult to biochemically, with many types and complex components, usually including dye auxiliaries, oil agents, acids and bases, fiber impurities, and inorganic salts; phenolic substances, Monocyclic aromatic hydrocarbons, polycyclic aromatic hydrocarbons, and heterocyclic compounds containing nitrogen, sulfur, and oxygen, etc. The B / C value of wastewater is lower than 0.3, and the biodegradability is poor. For the treatment of this type of wastewater, the physicochemi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/461C02F101/30
Inventor 瞿广飞吴淼淼裘伟霞刘玉环宁平
Owner KUNMING UNIV OF SCI & TECH
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