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A treatment method for phosphorus-containing wastewater produced in glyphosate production process

A technology of production process and treatment method, which is applied in the field of phosphorus-containing wastewater treatment, can solve problems such as biological toxicity, and achieve the effects of high utilization rate, cost saving, and simple and fast treatment method

Active Publication Date: 2015-11-25
ANHUI COSTAR BIOCHEM CO LTD
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  • Description
  • Claims
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Problems solved by technology

The production of 1 ton of glyphosate produces 17 tons of waste water. The water application technology is now used, and the amount of waste water is greatly reduced. However, glyphosate waste water contains high concentrations of organic phosphine compounds, which are biologically toxic and difficult to treat. The situation restricts its development

Method used

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Examples

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Embodiment Construction

[0015] The present invention is further described by example below:

[0016] 500kg of production wastewater was taken from the workshop, and its total phosphorus content was detected to be 785mg / L. It was put into a storage tank and added with nano-LaFeO 3 Rare earth complex compound and O 2 , photocatalytic reaction for 5 hours, the catalyst was filtered out after centrifugation, the filtrate was put into another storage tank, flocculant was added for flocculation for 10 hours, and the clear liquid was taken for testing. The total phosphorus content was 15 mg / L, and the removal rate was 98%.

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Abstract

The invention relates to a treatment method for phosphor-containing wastewater produced in a glyphosate production process. Perovskite type nano LaFeO3 rear-earth composite compound is taken as a catalyst, the catalyst is applied to photocatalysis treatment of glyphosate phosphor-containing wastewater, a flocculating agent for flocculation treatment is added in wastewater treated by the photocatalysis in the first step, and content of total phosphor of the wastewater treated in the second step is less than 20mg / L. The treatment method disclosed by the invention is simple and quick, efficient and pollution-free; moreover, the rear-earth composite compound can be recycled and re-utilized, is low in economic cost, high in utilization rate, good in treatment effect; and the flocculated and deposited sludge can be used as the raw material for producing a phosphor fertilizer.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a treatment method for phosphorus-containing wastewater produced in the glyphosate production process. Background technique [0002] Glyphosate is a high-efficiency, low-toxicity, and destructive post-emergence herbicide. In recent years, due to the expansion of genetically modified crops, the market demand has grown rapidly, and it has occupied the first place in the world's pesticide sales for many years. As an important low-toxicity pesticide, glyphosate has a broad market prospect in the future. The production of 1 ton of glyphosate produces 17 tons of waste water. The water application technology is now used, and the amount of waste water is greatly reduced. However, glyphosate waste water contains high concentrations of organic phosphine compounds, which are biologically toxic and difficult to treat. Circumstances constrained its development. In order to solve t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04C02F103/36
Inventor 谷顺明高正华吴李瑞
Owner ANHUI COSTAR BIOCHEM CO LTD
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