When it comes to the monitoring of residual chlorine in wastewater, what kind of wastewater requires the monitoring of residual chlorine? Wastewater Treatment Monitoring, Drinking Water Monitoring, Online Monitoring of Medical Wastewater, etc. all require the monitoring of residual chlorine content in water. Why? This involves the issue of disinfection.
Residual chlorine refers to the chlorine remaining in water after it has been disinfected with hydrated chlorine disinfectant. It is mainly divided into three forms: total residual chlorine, free residual chlorine, and combined residual chlorine (total residual chlorine actually includes free residual chlorine and combined residual chlorine). Everyone should understand that the main function of residual chlorine is to continuously kill bacteria and prevent water quality from being polluted. Since it’s for disinfection, shouldn’t there be as much as possible? Not at all! If the residual chlorine in water exceeds the standard, it will also pollute the water source and cause harm to people. Excessive residual chlorine can aggravate the production of unpleasant odors from phenols and other organic substances in water, irritate the nose, throat, etc., and may also generate toxic and carcinogenic substances such as chloroform. Monitoring the content of chlorine in water can ensure the safety of drinking water disinfection work.
There are various methods for monitoring residual chlorine in water. Hangzhou Moody has produced an RCl900 online total residual chlorine analyzer, which uses the photometric method. The working principle of this equipment is that after water and anti-interference agents are actively injected into the reactor, a color reaction is carried out by automatically adding characteristic color-developing agents, thereby detecting the absorbance of the reactants. Subsequently, the total residual chlorine content in the water is monitored based on this absorbance value. This instrument complies with the monitoring standards for total residual chlorine in water in industries such as environmental protection, medical wastewater, and power. It is a fully automatic online monitoring instrument.
