Before understanding the purpose of detecting reactive oxygen species (ROS) in drinking water, it is necessary to know that currently, in addition to chlorine-containing disinfectants, common methods for wastewater disinfection also include ultraviolet disinfection, ozone disinfection, and the reactive oxygen species disinfection discussed in this paper, along with the corresponding residual disinfectant detection, such as residual chlorine and ROS detection.
Reactive oxygen species, also known as potassium hydrogen persulfate, are used for disinfecting sewage and wastewater. Solid dosing delivers excellent disinfection performance, and it is mainly applied in the disinfection of polluted water sources such as medical wastewater and drinking water. So what is the purpose of detecting ROS in drinking water? The purpose is to measure the residual ROS content after treatment, ensuring that the water quality is free from secondary pollution.
Drinking water is indispensable in our daily lives. The consequences of consuming improperly treated contaminated water are severe, as it contains various pollutants that are highly harmful to the human body. In this case, sterilization and disinfection are essential, and post-treatment monitoring is equally critical. The residual ROS in drinking water after disinfection is detected using the ROS900 Online Reactive Oxygen Species Analyzer.
Everything has both advantages and disadvantages. Although ROS disinfection is effective, it also has drawbacks. Solid ROS is highly stable, but it must be prepared into a solution for dosing; ROS in solution is unstable and easily decomposes. When the prepared solution is dosed via a metering pump, the initial sterilization effect may be satisfactory, but the subsequent treatment of pollutants monitored in the water becomes less obvious, requiring re-preparation of the solution, which significantly increases the workload. This issue does not occur with disinfectants such as sodium hypochlorite! Therefore, the choice of disinfectant for disinfection treatment should be based on actual conditions, and post-treatment detection with a Water Quality Analyzer is undoubtedly indispensable.
