When it comes to sewage, simply put, it refers to polluted water sources. With the continuous progress of China’s economy, water pollution has become very serious. Relevant departments have required all major fields to do a good job in water quality monitoring to ensure water quality safety! So, what exactly are the indicators for sewage monitoring? That’s really quite a lot! Let’s have a brief understanding below.
Strengthening the supervision of discharge is conducive to preventing and controlling water pollution problems. As for the monitoring indicators of sewage discharge, they can mainly be divided into domestic sewage monitoring, online monitoring of industrial wastewater, online monitoring of medical wastewater, etc. It is specifically divided into:
1.Domestic sewage is the wastewater used in human daily life. Its main sources include residences, shopping malls, schools, hospitals, etc. As for the main monitoring indicators, they are: BOD, total phosphorus, total nitrogen, COD, water color, ammonia nitrogen, surfactants, etc.
2.Industrial wastewater, in fact, encompasses various qualities such as production wastewater, sewage, and cooling water. It refers to some wastewater or waste liquid produced during the industrial production process. It contains multiple toxic substances and poses a significant threat to the environment and human health. Therefore, its main monitoring indicators are: COD, total phosphorus, ammonia nitrogen, heavy metals (zinc, copper, nickel, etc.), fluoride, cyanide, etc.
3.Regarding hospital wastewater, of course, it comes from various departments of the hospital. The wastewater pollution here is particularly complex. Because there are a large number of pathogenic bacteria, viruses and some chemical agents in hospitals, which have various infectious properties. The main indicators for online monitoring of medical wastewater include: coliform bacteria, total residual chlorine, volatile phenols, COD, ammonia nitrogen, etc.
The above is just a brief introduction to the monitoring indicators of sewage and wastewater. Which specific indicators need to be monitored in each field still depends on the situation.
