With the rapid advancement of the pharmaceutical industry, environmental pollution caused by pharmaceutical wastewater has escalated, particularly for fermentation-based pharmaceutical wastewater. Characterized by high pollutant concentrations, the contaminants in such wastewater are not only recalcitrant to microbial degradation but also exhibit inhibitory effects on microorganisms. Thus, effective treatment of fermentation-based pharmaceutical wastewater is of great significance, and wastewater monitoring constitutes a critical link in the treatment process. This paper aims to elaborate on the wastewater monitoring practices in fermentation-based pharmaceutical plants.
Establishment of Wastewater Monitoring Points
In fermentation-based pharmaceutical plants, monitoring points are established at three locations: the total wastewater discharge outlet, the rainwater discharge outlet, and the domestic sewage discharge outlet (as domestic sewage is discharged independently into the external environment).
Key Monitoring Indicators for Each Point
1.Total Wastewater Discharge Outlet
Core indicators to be monitored include: flow rate, pH, total phosphorus (TP), total nitrogen (TN), chemical oxygen demand (COD), ammonia nitrogen (NH₃-N), chroma, acute toxicity, total cyanide, total organic carbon (TOC), suspended solids (SS), and total zinc.
2.Domestic Sewage Discharge Outlet
Key indicators encompass: COD, NH₃-N, flow rate, pH, animal and vegetable oils, SS, TP, and TN.
3.Rainwater Discharge Outlet
Primary monitoring indicators include: pH, COD, NH₃-N, and SS.
For the aforementioned indicators, environmental protection authorities mandate the installation of automatic water quality monitoring equipment. The water quality analyzer developed by Hangzhou Modi is a fully automated system integrating functions such as automatic sampling, real-time monitoring, and self-maintenance.
Considerations During Monitoring
1.Total Phosphorus (TP) Monitoring: In regions where total quantity control is implemented for TP, fully automated monitoring shall be adopted.
2.Total Nitrogen (TN) Monitoring: Similar to TP, TN requires total quantity control in designated regions. Additionally, TN monitoring shall follow a daily minimum frequency, with fully automated monitoring employed consistently.
