Disinfection is an important step in the process of sewage and wastewater treatment. Liquid chlorine disinfection is generally a common water treatment disinfection method and is widely used in multiple fields. This chapter mainly aims to understand the process description of chlorine disinfection treatment for wastewater.

When it comes to the chlorine disinfection treatment process, the main features are that the source of chlorine in the bottled liquid of industrial products is reliable and extensive. In addition, the equipment investment and operating costs for chlorination disinfection are relatively low, and the disinfection effect is relatively stable. There is also mature design experience. Of course, there are also shortcomings. After more than twenty years of application, the problems have been discovered. If chlorine is used to treat wastewater containing organic matter, especially water with humic acid, it will produce some carcinogens such as trihalomethanes. Another point is that chlorine disinfection is ineffective against some viruses and spores. Moreover, as time goes by, the viruses in the water develop resistance to chlorination disinfection. So in some places, chlorine dioxide or sodium hypochlorite is chosen for disinfection.

The above has described the process description of chlorine disinfection treatment. Here, it is necessary to remind you that! If the water quality is disinfected with chlorine, it is indispensable to use the Moody RCl900 total residual chlorine online analyzer to monitor the total residual chlorine in the wastewater in real time. Because as the amount of chlorine increases, toxic and carcinogenic substances will also be produced. Once such water is consumed by people, the consequences would be unimaginable! Among them, the more common issue is that the online monitoring of medical wastewater includes the monitoring of total residual chlorine.