As we have learned before, medical wastewater comes from various departments. Wastewater discharged from fields such as laboratories, laundries, operating rooms, canteens, wards, and self-diagnosis and treatment rooms is collectively referred to as medical wastewater. This chapter mainly aims to help everyone understand what the detection standard for total residual chlorine in medical wastewater treatment is!

According to the discharge standard of medical wastewater GB 18466-2055, the relevant indicators of total residual chlorine in medical wastewater treatment can be understood. Hospitals will use chlorine-containing disinfectants to disinfect medical wastewater. If the disinfected wastewater is directly discharged into surface water or the sea, dechlorination treatment is required to ensure that the total residual chlorine is less than 0.5mg/l.

In addition, in the discharge limits of medical wastewater from infectious diseases and tuberculosis, chlorine-containing disinfectants are used for disinfection. The process control requirements are as follows: the contact time of the disinfection contact tank should be no less than 1 hour of action, and the total residual chlorine range at the outlet of the contact tank is 6.5 to 10mg/l.

If chlorine-containing disinfectants are used for disinfection in the discharge limits of medical wastewater from comprehensive or other fields, the process control requirements for this can be classified into two levels of standards. First, the contact time of the poisoning contact tank is no less than one hour, and the total residual chlorine at the outlet of the contact tank is between 3 and 10mg/ L. Second, the contact time of the disinfection contact tank is also no less than one hour, but the total residual chlorine at the outlet of the contact tank is between 2 and 8mg/l.

The Hangzhou Modi RCl900 total residual chlorine online analyzer adopts the photometric method. This instrument is not subject to any interference and is mainly applicable to various water bodies. It can also perform real-time monitoring of total residual chlorine and meets the standards of major industries such as medical care, environmental protection, and power.