Comprehensive treatment technique for recycling glyphosate mother liquor

A technology of glyphosate mother liquor and glyphosate, which is applied in the fields of compounds of group 5/15 elements of the periodic table, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc., which can solve the problem of high incineration cost and treatment Insufficient technical integration and other issues, to achieve high resource recovery rate and significant social benefits

Active Publication Date: 2013-05-08
JIANGSU YOUTH CHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the point of view of the terminal treatment method, the incineration route is undoubtedly a better method. By evaporating and concentrating, incinerating the concentrated liquid can almost solve the problem of disposing of the glyphosate mother liquor, but the incineration cost is high, and the production of each ton of glyphosate produces The cost of mother liquor treatment is at least 3,800 yuan, which is unaffordable for general enterprises
Although there have been researches on various technologies such as membrane concentration, multi-effect evaporation, incineration, and advanced treatment, the integration of various treatment technologies is not enough

Method used

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  • Comprehensive treatment technique for recycling glyphosate mother liquor
  • Comprehensive treatment technique for recycling glyphosate mother liquor
  • Comprehensive treatment technique for recycling glyphosate mother liquor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1: the preparation I of modified resin

[0039] Put 200ml of D318 macroporous weakly basic acrylic anion exchange resin into the ion exchange column. The ion exchange column is kept warm with jacketed hot water, controlled at 30-40°C, and washed with ethanol. The flow rate of ethanol washing is 100ml / hr, and the washing time is 4hr; when the ethanol washing is finished, the residual ethanol in the resin is blown dry with air pressure; adjust and stably control the temperature of the hot water jacket to 60-65°C Pour 100ml of 20% ammonia water into the resin exchange column to soak the resin for 30 minutes; after soaking, keep at 60-65 degrees, continuously and stably add 300ml of 20% ammonia water, and extract at the same speed at the same time, control the feeding and discharging speed of 100ml / hr. After the alkali feeding is completed, the extraction is continued until it is dry, and the resin is washed with deionized water until the pH value of the effluent...

Embodiment 2

[0040] Embodiment 2: Preparation II of modified resin

[0041] Put 200ml of D311 macroporous weakly basic acrylic anion exchange resin into the ion exchange column. The ion exchange column is kept warm with jacketed hot water, controlled at 30-40°C, and washed with methanol. Methanol washing is controlled at a flow rate of 100ml / hr, and the washing time is 5hr; after the methanol washing is completed, the residual methanol in the resin is blown dry with air pressure; the temperature of the hot water jacket is adjusted and stably controlled to 55-60°C, and the pre-configured Pour 100ml of triethylamine into the resin exchange column to soak the resin for 30min; after soaking, keep 60-65℃, add 300ml of triethylamine continuously and stably, and extract at the same speed at the same time, control the feeding and discharging speed of 100ml / hr. After the alkali feeding is completed, the extraction is continued until it is dry, and the resin is washed with deionized water until the ...

Embodiment 3

[0042] Embodiment 3: the preparation III of modified resin

[0043] Put 200ml of D301 macroporous weakly basic styrene-based type I anion exchange resin into the ion exchange column. The ion exchange column is kept warm with jacketed hot water, controlled at 30-40°C, and washed with ethanol. The flow rate of ethanol washing is 80ml / hr, and the washing time is 6hr; when the ethanol washing is finished, the residual ethanol in the resin is blown dry with air pressure; Pour 100ml of 20% sodium hydroxide aqueous solution into the resin exchange column to soak the resin for 30min; after soaking, keep at 60-65 degrees, continuously and stably add 300ml of 20% sodium hydroxide aqueous solution, and extract at the same speed, control the feeding and discharging speed of 100ml / hr. After the alkali feeding is completed, the extraction is continued until it is dry, and the resin is washed with deionized water until the PH value of the effluent reaches neutral, that is, the modified wea...

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Abstract

The invention provides a treatment method of glyphosate mother liquor. The glyphosate mother liquor is from the glyphosate preparation process by an IDA (incremental dynamic analysis) route air oxidation method. The treatment method comprises the steps of resin adsorption, resin desorption and formaldehyde recovery. The method provided by the invention achieves the goal of recycling waste materials, implements circulation and economy, and has the advantages of energy consumption saving, environmental friendliness, lower production cost and the like.

Description

technical field [0001] The invention relates to a method for treating industrial waste water, in particular to a method for treating glyphosate mother liquor. Background technique [0002] Since glyphosate has certain solubility in water, a certain amount of dilute glyphosate mother liquor will be produced regardless of the IDA method or the glycine method. . Foreign companies adopt the treatment method of concentrating and deep burying, while Chinese manufacturers adopt the method of concentrating the glyphosate dilute mother liquor to prepare 10% glyphosate water. Therefore, only China produces and uses 10% glyphosate water in the world. 1.0-1.5 tons of 10% glyphosate water solution is produced by-product per ton of glyphosate. [0003] Since the current 10% glyphosate aqueous solution is basically prepared by adding glyphosate powder or all of the mother liquor, the unreacted raw materials and by-products in the reaction process will accumulate in the mother liquor, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07F9/38C07C47/058C07C45/82C02F9/10
Inventor 戚明珠王东朝孔勇王宝林何红军杨凡蔡靖
Owner JIANGSU YOUTH CHEM
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