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Technology for treating waste water containing phenol in synthetic process of p-hydroxy-phenyl-hydantoin

A technology of p-hydroxyphenylhydantoin and hydroxyphenylhydantoin, which is applied in the field of phenol-containing wastewater treatment, can solve the problems of waste of resources and non-recyclable phenol, and achieve the effect of reducing the pressure on environmental protection

Inactive Publication Date: 2009-12-02
HENAN NEWLAND PHARMA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are different methods for the treatment of phenol-containing wastewater, 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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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0015] 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 wastewater (PH=2, 7500PPM) flows into the adsorption column, and the 30000Kg wastewater phenol concentration of leakage is 15PPM, and it flows through another new macroporous resin adsorption column at a speed of 3000L per hour, and the leakage liquid phenol concentration is 4PPM, and the wastewater is 3000L 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

[0016] Example 2: Others are the same as Example 1, adjust the waste water flow rate 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

[0017] Example 3: Others are the same as Example 1, adjust the flow rate of wastewater 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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PUM

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Abstract

The invention provides a method for treating waste water containing phenol in a synthetic process of p-hydroxy-phenyl-hydantoin, which belongs to the technical field of the treatment of organic chemical industrial waste water. The method comprises the following step: synthetic waste water is distilled and pretreated, wherein the treatment of the synthetic waste water comprises the processes that acidizing pretreatment is firstly carried out on the synthetic waste water, and then the collected waste water containing phenol is adsorbed by macroporous resin. Because the method removes phenol-containing substances in the waste water in advance, the difficulty of the recovery processing of inorganic salt subsequent can be greatly improved, and recovered sodium phenolate can be reused for a synthetic working process of the p-hydroxy-phenyl-hydantoin. The method has stable and reliable treatment effect, low treatment cost, convenient and easy operation and easy realization of industrialized application.

Description

technical field [0001] The present invention relates to the treatment technology of phenol-containing wastewater. In particular, it is used in a large amount of phenol-containing wastewater generated during the synthesis of p-hydroxybenzenehydantoin. Background technique [0002] P-Hydroxybenzone is an important intermediate for semi-synthesizing β-lactam antibiotics such as amoxicillin and amoxicillin, and its market prospect is broad. [0003] A large amount of phenol-containing wastewater is produced in the synthesis section of p-hydroxyphenylhydantoin, and the phenol content is about 10,000PPM. Every ton of p-hydroxyphenylhydantoin produced produces 4 tons of waste water. Phenol is protoplasmic and highly toxic, which is very harmful to the environment. Wastewater containing phenol cannot be discharged directly. The state requires the phenol content in industrial wastewater to be below 0.5PPM. The phenol content in synthetic wastewater is high and has recycling value. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10C02F1/28C02F1/04C02F103/36
Inventor 谢建中车云峰
Owner HENAN NEWLAND PHARMA
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