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Technology for treating DL-p-hydroxyphenylglycine synthetic mother liquor phenol-containing sewage

A technology for synthesizing p-hydroxyphenylglycine and mother liquor, which is applied in water/sewage treatment, heating water/sewage treatment, adsorption water/sewage treatment, etc., and can solve the problems of phenol not being recyclable and resource waste

Inactive Publication Date: 2010-06-30
HENAN NEWLAND PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] There are different methods for the treatment of phenol-containing sewage, which can be removed by chemical oxidation and biodegradation. The disadvantage is that phenol cannot be recycled, resulting in waste of resources

Method used

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  • Technology for treating DL-p-hydroxyphenylglycine synthetic mother liquor phenol-containing sewage

Examples

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Effect test

example 1

[0014] Example 1: 1000KgXH-303 macroporous adsorption resin column, Φ600*4000, washed with acetone until the effluent is colorless, then rinsed with deionized water until the effluent has no smell of acetone, and the processed containing Phenol sewage (PH=2, 7500PPM) flows into the adsorption column, and the leaked 30000Kg sewage phenol concentration is 15PPM, and it flows through another new macroporous resin adsorption column at a speed of 3000L per hour, and the leaked liquid phenol concentration is 4PPM. The speed flows through an activated carbon column of the same specification, the concentration of phenol in the leakage liquid is 0.10PPM, and the removal rate of phenol is 100%.

example 2

[0015] Example 2: Others are the same as Example 1, the sewage flow rate is adjusted to 5000L / hour, the leakage concentration of column I is 25PPM, the leakage concentration of column II is 5PPM, the leakage concentration of activated carbon column is 0.10PPM, and the removal rate of phenol is 100%.

example 3

[0016] Example 3: Others are the same as Example 1, adjust the sewage flow rate to 7000L / hour, the leakage concentration of column I is 150PPM, the leakage concentration of column II is 12PPM, and the leakage concentration of activated carbon column is 0.3PPM.

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Abstract

The invention relates to a technology for treating DL-p-hydroxyphenylglycine synthetic mother liquor phenol-containing sewage, which belongs to the technical field of the treatment of organic chemical sewage. In the method, the distillation pretreatment is carried out firstly on the synthetic sewage, and then the macroporous resin adsorption treatment is carried out on the collected phenol-containing sewage, wherein the pretreatment comprises the step of carrying out acidized pretreatment on the synthetic sewage firstly. Because phenol-containing substances in the sewage are removed in advance in the method, the difficulty of subsequent inorganic salt recycling treatment can be greatly improved. The recycled sodium phenolate can be charged back to the synthetic working section of p-hydroxyphenylglycine. The method has stable and reliable treatment effect, low treatment cost and simple and easily-applied operation, is easy to realize industrialized application, reduces the production cost and solves the problem of environmental protection.

Description

technical field [0001] The invention relates to the treatment technology of phenol-containing sewage in mother liquor of DL-p-hydroxyphenylglycine synthesis, and belongs to the field of phenol-containing sewage treatment of pharmaceutical and chemical intermediates. It is about the treatment technology for the phenolic sewage of the synthetic mother liquor with the following structural products. [0002] [0003] The name is DL-p-hydroxyphenylglycine. After splitting and hydrolysis, L-p-hydroxyphenylglycine is the side chain of semi-synthesized β-lactam antibiotics such as amoxicillin and amoxycillin, and its market prospect is broad. Background technique [0004] During the synthesis and production of DL-hydroxyphenylglycine, a large amount of phenol-containing sewage will be produced. The phenol content is 8000-12000PPM. Every ton of p-hydroxyphenylglycine produced will produce 3 tons of sewage. Phenol is protoplasmic and highly toxic. It is very harmful to the environm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/58C02F9/10C02F1/28C02F1/04F23G7/00C02F101/34
Inventor 谢建中
Owner HENAN NEWLAND PHARMA
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