Ozone disinfection has been adopted by more and more enterprises in recent years. This disinfectant mainly exists in the form of potassium persulfate compound salt powder, and then is mixed into liquid and injected into wastewater for disinfection. The disinfection effect is similar to that of chlorine disinfection. After the disinfectant and water body come into contact for a period of time, some residual active oxygen concentration will remain to judge the disinfection situation. At this time, it is inevitable to detect the active oxygen in the wastewater. How to detect the active oxygen in the wastewater?
Let’s Learn about Related Issues Together with the Water Quality Online Monitoring Instrument Manufacturer.
Before understanding the detection of active oxygen, let’s first take a look at the limit requirements of activity!
In fact, in domestic relevant standards, there are no clear regulations on the limit of active oxygen. Generally, residual chlorine is controlled, but gradually, active oxygen disinfectant is also used for disinfection treatment in China. At this time, it is very important to do the detection of active oxygen in wastewater! Because if the limit is exceeded, it will cause harm.
How to detect the active oxygen in the wastewater? There are various detection methods. The ROS900 Active Oxygen Online Analyzer produced by Hangzhou Modi uses the induced fluorescence method or colorimetry. After potassium persulfate hydrogen is dissolved in water, the released active oxygen will react with N,N-diethyl p-phenylenediamine to turn red. Then, the absorbance of the water quality is monitored by the colorimeter, and the content of active oxygen in the water is confirmed. This instrument is a fully automatic online monitoring device, which can automatically zero, automatically calibrate, automatically clean, and automatically maintain, etc.
Notes: Whenever the water sample is pre-treated with disinfection, amino acids should be added to the water sample first. The purpose is to eliminate the interference of residual chlorine on the activity of oxygen.
