Process

Low Temperature MVR Evaporation System

***** Co., Ltd. (Shanghai Pharmaceutical Group) is implementing a low-temperature MVR treatment project for wastewater. ***** is a comprehensive pharmaceutical enterprise that focuses equally on chemical raw materials, chemical formulations, and the development of science, technology, and trade. This system is designed to support the hydrochlorothiazide raw material workshop, with the aim of removing aniline compounds from the raw water. The designed treatment capacity is 10 t/d, with a pH of 4-8 and a solid content of 7.6%, which includes approximately 3.2% sodium chloride, 3.8% ammonium chloride, and about 0.6% other organic substances, with a COD of approximately 3000 mg/L. The organic substances do not volatilize during evaporation. The design employs low-temperature MVR evaporation (60-65°C) to concentrate the solution by a factor of 5, resulting in the cold crystallization of organic substances. The high-salinity, high-ammonia mother liquor undergoes alkaline treatment to remove ammonia and produce ammonia water, with a designed ammonia removal rate of 90%. The low-ammonia brine after deammoniation is then added to the biochemical system for compliant discharge. The evaporated condensate is reused in production. This setup meets production needs and has received high customer satisfaction.

Key words: Multi-effect evaporation | distillation | resin adsorption

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Engineering Achievements

Medicine

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Product Description

***** Co., Ltd. (Shanghai Pharmaceutical Group), producing low-temperature MVR treatment project for wastewater.

***** is a comprehensive pharmaceutical enterprise that focuses equally on chemical raw materials, chemical formulations, and the development of science, industry, and trade. This system is designed for the hydrochlorothiazide raw material workshop, aiming to remove aniline compounds from the raw water. The designed treatment capacity is 10 t/d, pH: 4-8, with a solid content of 7.6%, including approximately 3.2% sodium chloride, 3.8% ammonium chloride, and about 0.6% other organic substances, with a COD of approximately 3000 mg/L, and organic substances do not volatilize during evaporation. The design employs low-temperature MVR evaporation (60-65°C) to concentrate 5 times, with the discharge resulting in cold crystallization of organic substances. The high-salinity and high-ammonia mother liquor undergoes alkaline deamination to produce ammonia water, with a designed deamination rate of 90%. The low-ammonia brine after deamination is added to the biochemical system for compliant discharge. The evaporated condensate is reused in production. It meets production needs, and customer satisfaction is very high.

Related process

Multi-effect evaporation technology

MVR Evaporation Technology

Distillation technology

Resin adsorption technology

Evaporation mother liquor drying technology

Ammonia Desorption and Absorption Technology

Efficient Catalytic Oxidation Technology

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