Since 2020, the epidemic still exists, so the water quality and environmental monitoring Center can not stop the online monitoring of water quality involving the epidemic wastewater! Implement the document requirements of the Notice of the Office of the Municipal Bureau of Ecological Environment on Monitoring the quality of drinking water source and the wastewater involved in the epidemic during the normal epidemic prevention and control period in the City, and protect the environmental safety of epidemic prevention and control.

The Total Residual Chlorine in Wastewater is an Important Index for Determination!

Relevant environmental monitoring centers strengthen the awareness of risk and responsibility, and regularly monitor hospitals, major sewage treatment plants and other places, among which the monitoring items are total residual chlorine, in addition to the number of fecal E. coli groups. (The monitoring equipment used for the above two parameters are: RCl900 total residual chlorine online analyzer, WECT-900 E. coli online analyzer)

The Detection of Chlorine and E. coli in Drinking Water is Particularly  Important! Why is that?

· Residual chlorine refers to the amount of residual chlorine left after chlorine oxidants are added to water for a period of time, in addition to being consumed by microorganisms, organic and inorganic substances in water, including free residual chlorine and combined residual chlorine. Free residual chlorine refers to chlorine in the form of hypochlorous acid (HClO) or dissolved elemental chlorine (Cl2); Combined residual chlorine refers to chlorine in the form of chloramines and organochloramines.

Although chlorine can be used for sterilization and disinfection, the residual amount of “residual chlorine” is not in place, and the existence of excessive amounts will bring harm to the human body, especially the disinfection by-products have the tendency to cause toxicity and cancer, which brings great health risks to drinking water health. Therefore, it is necessary to conduct real-time monitoring of the total residual chlorine in the water to determine whether it exceeds the standard!

· In addition, most of the pathogens in the water are from the feces of patients or livestock, and the number of these pathogens is small, and the detection process will be more complicated, so direct detection will be more difficult. This will use the detection of Escherichia coli bacteria or the number of Escherichia coli bacteria in the water as an indicator of water pollution. If the number of E. coli bacteria exceeds a certain amount, it means that the water has been contaminated by feces, and may contain pathogenic bacteria, which is to be used with caution, the water out and then information use!