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Method for treating organic wastewater through photoelectric catalytic oxidation

A photoelectric catalysis and oxidation treatment technology, applied in the fields of oxidized water/sewage treatment, chemical instruments and methods, water/sewage treatment, etc., can solve the problems of secondary pollution, low treatment efficiency, difficult regeneration of activated carbon, etc., to achieve no secondary pollution The effect of pollution

Inactive Publication Date: 2012-09-26
ZIJIN MINING GROUP
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  • Abstract
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  • Application Information

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Problems solved by technology

The purpose of adsorption method, membrane separation method, extraction method, etc. is to separate the refractory organic substances, which will cause secondary pollution
Photochemical method, ozone oxidation method, phenanthroline (Fenton) reagent method, etc. are difficult to effectively destroy the structure of polychlorinated biphenyls and other substances with very stable structures, and consume large amounts of chemical reagents, resulting in low processing efficiency and high operating costs.
The biochar method is only suitable for the treatment of slightly polluted wastewater, and the regeneration of activated carbon is difficult
The biggest disadvantage of the coagulation method is the secondary pollution precipitation of coagulants and pollutants

Method used

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  • Method for treating organic wastewater through photoelectric catalytic oxidation
  • Method for treating organic wastewater through photoelectric catalytic oxidation
  • Method for treating organic wastewater through photoelectric catalytic oxidation

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Embodiment Construction

[0019] Attached below figure 1 The present invention will be further described in detail with specific embodiments.

[0020] Implementation steps of the present invention are as follows:

[0021] 1. Pretreatment, the organic wastewater after oil separation is collected into the pH adjustment pool, and lime is added to the pool to adjust the pH to 3~6. After natural settlement, the supernatant is pumped to the photoelectric catalytic oxidation treatment system.

[0022] 2. Photoelectric catalytic oxidation treatment, the micro-electrolysis system is made of waste iron-coke, in which the weight ratio of iron to carbon is 1-5:1, and the ratio of organic waste water to iron-coke is 10-50:1, and dosing according to the amount of loss Iron filings are used to ensure its normal operation; the photocatalyst uses nano-TiO2 photocatalyst filter screen, the light source uses a 365nm wavelength ultraviolet lamp, the aeration flow rate is adjusted according to the amount of wastewater to ...

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Abstract

The invention relates to a method for treating organic wastewater through photoelectric catalytic oxidation, comprising the steps of: forming a ferric-carbon microelectrolysis system with waste ferric-carbon or other substances as a raw material; irradiating by using ultraviolet light or other special light sources; adopting modified TiO2 or other oxide and sulfide semiconductors as a photocatalyst; and meanwhile, introducing air or other oxidizing gases to the bottom for aeration, so that wastewater generates a photoelectric catalytic oxidation reaction to oxidize an organic matter into CO2 and H2O, and the treated wastewater can reach the standard to discharge or can be recycled.

Description

1. Technical field [0001] The invention relates to the technical field of organic wastewater treatment, and specifically refers to a new method for integrated treatment of organic wastewater by iron-carbon micro-electrolysis and photocatalytic oxidation, and the treated wastewater can be discharged up to the standard or recycled. 2. Background technology [0002] With the development of industry, more and more fine chemical products are coming out. Among these products, many substances will not only seriously pollute the environment, but also can be biodegraded, such as p-toluidine, chlorophenol, polychlorinated biphenyls, Organic substances such as nitrobenzene. At present, the treatment technologies of this kind of organic wastewater in China mainly include adsorption method, membrane separation method, extraction method, photochemical method, ozone oxidation method, phenanthroline (Fenton) reagent method, biochar method, coagulation method, etc. The purpose of adsorption...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/06C02F1/461C02F1/74
Inventor 刘涛甘永刚张毓芳林斌范乐宇谢晓萍陈庆红
Owner ZIJIN MINING GROUP
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