Method for treatment of organophosphorus pesticide wastewater by immobilized microorganisms

A technology for organophosphorus pesticides and wastewater, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems that have not yet been achieved, and achieve simple methods, good mechanical properties, and low prices Effect

Inactive Publication Date: 2013-05-15
白雪
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Problems solved by technology

There are many immobilization methods reported, but there is no ideal industrial method that is generally applicable to organophosphorus pesticide wastewater

Method used

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  • Method for treatment of organophosphorus pesticide wastewater by immobilized microorganisms

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Embodiment Construction

[0035] Screen and domesticate a number of highly efficient degrading bacteria, among which the fungus Aspergillus niger is the best. Three kinds of microbial immobilization methods were used to test, and finally it was determined that activated carbon was the immobilized material, and the adsorption method was used to immobilize Aspergillus niger, which was used to treat organic phosphorus pesticide production wastewater with good results. Significantly reduce the COD of wastewater effluent cr And TOC, recycling pesticide wastewater.

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Abstract

The invention relates to a method for treatment of organophosphorus pesticide wastewater by immobilized microorganisms. Mainly composed of the processes of strain domestication, carrier preparation, bacterium adsorption and wastewater treatment, the method is characterized by: adsorbing domesticated fungus Aspergillus niger to activated carbon with a diameter of 5-8mml, then putting the prepared activated carbon containing saturated Aspergillus niger into wastewater, with the putting amount of activated carbon accounting for 1% of the wastewater when the CODcr (chemical oxygen demand) of each liter of sewage reaches 200-10000, controlling the temperature at 530DEG C, and performing static immersion for 1-6 days. By using the method to treat the organophosphorus pesticide wastewater, the degradation rate can reach up to 98%.

Description

Technical field [0001] The invention is a treatment technology for efficiently degrading organic phosphorus pesticide compound polluted wastewater by using microorganisms. Background technique [0002] Microbial immobilization technology is an important way for microorganisms to play a highly effective role. Especially in the field of pollution control, it is becoming the core technology of certain sewage treatment, solid waste disposal and rapid removal of organic aerosols, and has become the current environmental science and engineering Research hotspots. There are many immobilization methods that have been reported, but there is no ideal and generally applicable industrial method for organophosphorus pesticide wastewater. [0003] Livingston et al. used a microbial immobilization reactor to treat wastewater containing organic phosphorus, and the removal rate of CODcr was more than 86%; Ferschl et al. immobilized Pseudomonas acidovorus (Pseudomonas acidovorus) with sodium algina...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34
Inventor 白雪欧阳思慧王勇徐浤顺郭统中
Owner 白雪
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