| Project Description | A pharmaceutical manufacturer generates approximately 60 t/d of wastewater, mainly from the production and processing of pharmaceutical intermediates. Such wastewater is characterized by high COD, high ammonia nitrogen, high salinity, strong odor, and deep color. It contains a complex mixture of organic and inorganic pollutants, including toxic substances harmful to biological systems, such as nitrogen-containing heterocycles, aromatic amines, phenolic compounds, cyanides, and surfactants.The original treatment process included sand filtration, carbon filtration, coagulation-sedimentation, and biological treatment. However, due to the plant’s expanded production capacity and increased orders, an upgrade of the existing wastewater treatment station was required. MOTIVA Environmental undertook the pretreatment unit of this project, applying a process of Self-Electrolysis + Ozone Catalytic Oxidation + Coagulation-Sedimentation.This pretreatment significantly reduces COD, heavy metals, and other pollutants in the influent, thereby lowering the treatment load on the subsequent evaporation and biological systems. The treated effluent consistently meets Grade A standards of GB/T 31962-2015 – Discharge Standard of Wastewater into Municipal Sewers. |
