Treatment method of ciprofibrate process wastewater

A treatment method and technology for wastewater, which are applied in special treatment targets, water/sewage treatment, natural water treatment, etc., and can solve the problem of not mentioning the ciprofibrate process wastewater treatment method and the ciprofibrate purification wastewater treatment. methods, etc., to achieve the effects of easy industrial production, white appearance, and long service life of the adsorption resin

Active Publication Date: 2019-03-29
XINCHANG COUNTY TAIRU TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this patent, the crude product of ciprofibrate is recrystallized with a mixed solvent of toluene and n-hexane, and there is no mention of the treatment method for the purified wastewater of ciprofibrate
[0008] The patents and documents related to ciprofibrate reported after 2013 mainly involve the chemical synthesis process of ciprofibrate and the recrystallization process of the crude product, and none of them mention the treatment method of wastewater from the ciprofibrate process
[0009] In a word, the existing documents and patents do not mention the treatment method of the ciprofibrate process wastewater

Method used

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  • Treatment method of ciprofibrate process wastewater

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Equilibrium adjustment: Add 500ml of ciprofibrate process wastewater into a clean 800ml beaker, the content of ciprofibrate detected by external standard is 0.51%, PH=7.5, stir constantly with a glass rod, and slowly add aqueous hydrochloric acid solution with a mass concentration of 20% Make balance adjustments. When the pH value of the wastewater reaches 5.5-7.0, stop adding the aqueous hydrochloric acid solution. Filtration to filter out the insoluble suspended matter in the wastewater.

[0038] Extraction: Transfer the well-balanced and adjusted waste water to a separatory funnel, and add 100ml of dichloromethane. Shake well and let stand. The dichloromethane in the lower layer was separated, and the recovered dichloromethane was used mechanically. The upper layer of wastewater is used for backup. According to the above-mentioned equilibrium adjustment and extraction method, 6 batches of waste water were processed again, and about 3000 ml of waste water after ex...

Embodiment 2

[0045] Equilibrium adjustment: Add 500ml of ciprofibrate process wastewater into a clean 800ml beaker, the content of ciprofibrate detected by external standard is 0.4%, pH=4.0, stir continuously with glass rod, slowly add caustic soda for equilibrium adjustment. When the pH value of the wastewater reaches 5.5-7.0, stop adding caustic soda. Filtration to filter out the insoluble suspended matter in the wastewater.

[0046] Extraction: Transfer the well-balanced and adjusted waste water to a separatory funnel, and add 100ml of dichloromethane. Shake well and let stand. The dichloromethane in the lower layer was separated, and the recovered dichloromethane was used mechanically. The upper layer of wastewater is used for backup. According to the above-mentioned equilibrium adjustment and extraction method, 6 batches of waste water were processed again, and about 3000 ml of waste water after extraction was obtained in total.

[0047] Activated carbon adsorption (continue to us...

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Abstract

The invention discloses a treatment method of ciprofibrate process wastewater. The method includes: firstly conducting equalizing regulation on ciprofibrate process wastewater; then extracting low polarity organic matters from the wastewater with dichloromethane; then adsorbing the extracted wastewater with activated carbon; and finally, treating the wastewater adsorbed by activated carbon with adsorption resin, conducting resin desorption to obtain a ciprofibrate crude product, and subjecting the crude product to recrystallization to obtain a ciprofibrate fine product. The method for treatment of ciprofibrate process wastewater provided by the invention has the characteristics of concise process, long resin life, good quality of recycled ciprofibrate and easy industrialization.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a method for treating wastewater from a pharmaceutical product ciprofibrate process. Background technique [0002] Ciprofibrate, also known as: chlorocycloproteramine, chemical name: 2-[4-(2,2-dichlorocyclopropyl)phenoxy]-2-methylpropionic acid. Ciprofibrate is a phenoxyacetic acid hypolipidemic drug developed by Sanofi in 1985. [0003] There are many synthetic methods of ciprofibrate, but all the synthetic methods contain the purification process of crude ciprofibrate. The usual purification process is to dissolve the crude ciprofibrate in ethyl acetate, and then wash the ethyl acetate with brine. The washing brine contains about 0.5-2.0% ciprofibrate, and this part of ciprofibrate is directly discharged into the wastewater treatment system for wastewater treatment without recovery. [0004] In 2008, Li Jingfeng from Shenyang Pharmaceutical University published an art...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02C02F103/34
CPCC02F1/001C02F1/26C02F1/28C02F1/281C02F1/66C02F9/00C02F2103/343C02F2303/16
Inventor 杨可炜
Owner XINCHANG COUNTY TAIRU TECH CO LTD
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