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Method and device for treating sulfate-containing wastewater in phenylglycine production process

A production process and technology of phenylglycine, which is used in neutralized water/sewage treatment, adsorbed water/sewage treatment, water/sewage multi-stage treatment, etc. It can solve the problem of low treatment efficiency of sulfate-containing wastewater and failure to achieve comprehensive utilization of resources. , low utilization rate of equipment, etc., to achieve the effect of resource utilization, short equipment flow, and low labor intensity

Active Publication Date: 2012-08-22
LINYI JINYIMENG BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a method and device for treating sulfate-containing wastewater in the production process of phenylglycine, which can effectively overcome the low treatment efficiency of sulfate-containing wastewater, low utilization rate of equipment, and high comprehensive energy consumption , can not achieve comprehensive utilization of resources, labor-intensive shortcomings

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  • Method and device for treating sulfate-containing wastewater in phenylglycine production process
  • Method and device for treating sulfate-containing wastewater in phenylglycine production process
  • Method and device for treating sulfate-containing wastewater in phenylglycine production process

Examples

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Effect test

Embodiment 1

[0024] A method for treating sulfate-containing wastewater in the production process of D-(-)phenylglycine, which uses the sulfate-containing wastewater produced in the production process of D-(-)phenylglycine as nourishment after pretreatment and pH adjustment Participate in the ethanol fermentation process, the specific steps are as follows:

[0025] 1) The sulfate wastewater produced in the production process of D-(-) phenylglycine was left to settle for 5 hours, and the precipitate was removed to obtain the primary separation sulfate wastewater; after testing, the amino acid content of the primary separation sulfate wastewater was 2wt%. .

[0026] 2) adding activated carbon accounting for 0.3% of the mass of the primary isolated sulfate wastewater to the primary separated sulfate wastewater obtained in step 1) for adsorption for 2 hours, adjusting the pH value to 6 to obtain a nitrogen source nutrient solution for ethanol fermentation;

[0027] 3) Add the ethanol fermenta...

Embodiment 2

[0030] The treatment method of sulfate-containing wastewater in the D-(-) phenylglycine production process as described in Example 1, the difference is that the amount of activated carbon added is 0.5% of the quality of the initially separated sulfate wastewater, and the nitrogen source nutrient for ethanol fermentation The liquid is added to the ethanol fermentation broth in a proportion of 0.12% by volume.

[0031] According to the actual production test, using the sulfate wastewater produced by tons of D-(-) L-phenylglycine products for the above treatment can save 45 kg of ammonium sulfate and 30 kg of sulfuric acid in the ethanol fermentation process, and reduce the cost of alcohol by 110 yuan per ton.

Embodiment 3

[0033] The special device of the treatment method of sulfate-containing wastewater in the D-(-) phenylglycine production process described in embodiment 1, such as figure 2 As shown, it comprises a waste water storage tank 1, a settling kettle 9, a decolorization kettle 10, a centrifuge 11 and a nitrogen source nutrient solution storage tank 12, and the outlet of the waste water storage tank 1 is connected with the water inlet of the sedimentation kettle 9, and the sedimentation kettle 9 The water outlet of the water outlet is connected with the water inlet of the decolorization kettle 10, and the water outlet of the decolorization kettle 10 is connected with the feed port of the centrifuge 11, and the centrifugal liquid outlet of the centrifuge 11 is connected with the nitrogen source nutrient solution storage tank 12 water inlets, A nitrogen source nutrient solution delivery pump 13 is connected to the outlet of the nitrogen source nutrient solution storage tank.

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Abstract

The invention relates to a method for treating sulfate-containing wastewater, in particular to a method for treating sulfate-containing wastewater in a D-(-) phenylglycine production process, and belongs to the technical field of sewage treatment. The method for treating the sulfate-containing wastewater in the D-(-) phenylglycine production process comprises that: after the sulfate-containing wastewater generated in the D-(-) phenylglycine production process is subjected to pretreatment and pH value adjustment, the sulfate-containing wastewater serving as nutriment participates in an ethanolfermentation process. The method overcomes the defects of low treatment efficiency of the sulfate-containing wastewater, low equipment utilization rate, high comprehensive energy consumption, incapability of achieving resource comprehensive utilization, high labor intensity and the like, realizes resource utilization of the wastewater, and reduces the production cost of nitrogen source nutrient added for alcoholic fermentation.

Description

technical field [0001] The invention relates to a treatment method and device for sulfate-containing wastewater, in particular to a treatment method and device for sulfate-containing wastewater in the production process of phenylglycine, and belongs to the technical field of sewage treatment. Background technique [0002] In the production process of preparing D-(-)phenylglycine by chemical resolution, a certain concentration of sulfate wastewater is produced. In the existing technology for treating sulfate-containing wastewater, the sulfate-containing wastewater is evaporated, concentrated, and crystallized to separate solid sulfate, and the mother liquor is evaporated, concentrated, crystallized, and separated in a cycle, such as figure 1 shown. Due to the process route of evaporation, concentration, crystallization and separation, a large amount of steam is consumed, the comprehensive energy consumption is high, and there are disadvantages such as high labor intensity. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C12P7/08C02F1/52C02F1/28C02F1/66C02F101/10
Inventor 张超王仕高王怀利马晓丽张金玲
Owner LINYI JINYIMENG BIOTECH