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Comprehensive treatment technique for recycling glyphosate mother liquor

A glyphosate mother liquor, the technology of glyphosate, which is applied to the compounds of Group 5/15 elements of the periodic table, water/sewage multi-stage treatment, water/sludge/sewage treatment, etc. Insufficient technical integration, etc., to achieve high resource recovery rate and significant social benefits

Active Publication Date: 2011-08-17
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] Example 1: Preparation of modified resin I

[0039] Load 200ml of D318 macroporous weakly basic acrylic anion exchange resin into an ion exchange column, which is insulated with jacketed hot water, controlled at 30-40°C, and washed with ethanol. The ethanol washing control enters at a flow rate of 100ml / hr, and the washing time is 4hr; after the ethanol washing is completed, use air pressure to purge the residual ethanol in the resin; adjust and stably control the temperature of the hot water jacket to 60~65℃, which will be configured in advance 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 20% ammonia water, and at the same time extract at the same rate, control the feeding and discharging rate to 100ml / hr. After the alkali intake is over, continue to extract to dryness, and wash the resin with deionized water until the pH value of the effluent reache...

Embodiment 2

[0040] Example 2: Preparation of modified resin II

[0041] 200ml of D311 macroporous weakly basic acrylic anion exchange resin is loaded into the ion exchange column, which is insulated with jacketed hot water, controlled at 30-40°C, and washed with methanol. The methanol washing control enters at a flow rate of 100ml / hr, and the washing time is 5hr; after the methanol washing is completed, use air pressure to purge the residual methanol in the resin; adjust and stably control the temperature of the hot water jacket to 55~60℃, which will be configured in advance Pour 100ml of triethylamine into the resin exchange column to soak the resin for 30min; after soaking, keep at 60-65 degrees, continuously and stably add 300ml of triethylamine, and at the same time extract at the same rate, control the feeding and discharging rate to 100ml / hr. After the alkali intake is over, continue to extract to dryness, and wash the resin with deionized water until the pH value of the effluent reach...

Embodiment 3

[0042] Example 3: Preparation of modified resin III

[0043] 200ml of D301 macroporous weakly basic styrene type I anion exchange resin is loaded into the ion exchange column, which is insulated with jacketed hot water, controlled at 30-40°C, and washed with ethanol. The ethanol washing control enters at a flow rate of 80ml / hr, and the washing time is 6hr; after the ethanol washing is completed, use air pressure to purge the residual ethanol in the resin; adjust and stably control the temperature of the hot water jacket to 75~85℃, which will be configured in advance 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 20% sodium hydroxide aqueous solution, and at the same time extract at the same speed, control the feeding and discharging speed of 100ml / hr. After the alkali intake is over, continue to extract to dryness, and wash the resin with deio...

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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 an industrial wastewater treatment method, in particular to a treatment method of glyphosate mother liquor. Background technique [0002] Because glyphosate has a certain solubility in water, no matter whether the IDA process or the glycine process is used, a certain amount of glyphosate dilute mother liquor will be produced, and each ton of glyphosate will produce about 4-6 tons of glyphosate mother liquor. . Foreign companies adopt the method of deep burying after concentration, while the production enterprises in our country have adopted the concentration of glyphosate dilute mother liquor to prepare 10% glyphosate water, so currently only China produces and uses 10% glyphosate water in the world. For each ton of glyphosate, about 1.0 to 1.5 tons of 10% glyphosate water is produced at the same time. [0003] Since the current 10% glyphosate aqua is basically made up of mother liquor with raw glyphosate powder or all made with mot...

Claims

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Application Information

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IPC IPC(8): C07C45/82C07F9/38C07C47/058C02F9/10
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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