1.1 Key Pollutants：
This biopharmaceutical company specializes in the production of pharmaceutical intermediates, mainly using chloroacetophenone, chloroform, pyridine, benzyl cyanide, and methyl aminoethanol. The primary pollutants in its wastewater include cyclic organics, heterocyclic long-chain compounds, and organic nitrogen-containing substances.
The influent flow ranges from 40 to 60 m³/day, with COD levels as high as 20,000–35,000 mg/L. The wastewater is classified as high-organic, high-salinity industrial wastewater with total Dissolved Solids reaching 20,000–30,000 ppm.
1.2 Key Characteristics：
① High organic nitrogen
② High salinity
③ Certain level of toxicity
④ High concentration of organic compounds
