Project Background:
Ibuprofen raw material production plant and some other pharmaceutical factories in the production process will produce a high concentration of ammonia and nitrogen wastewater, ammonia and nitrogen content of 3000 ~ 5000 mg / L, wastewater also contains about 8000 mg / L COD, treatment is difficult. Because of the high organic content in the wastewater, if the blow-off tower or evaporation tower is used to remove ammonia, the low volatile organic content will be discharged with the air, resulting in secondary pollution.
In order to avoid the secondary pollution, the plant used membrane deamination, but due to the previous technical level, the PP membrane deamination technology pioneered by a U.S. company in the use of the membrane module wetting, low concentration of ammonia sulfate in the absorbent solution and other problems, affecting the effectiveness of the use of the PP membrane module is replaced in the figure below.
