Disinfection work can be said to be very common around us, especially during the COVID-19 pandemic. Relevant departments always urge us to wash our hands and disinfect frequently. Of course, the water environment goes without saying! In this article, let’s briefly understand what the main uses of disinfectants entering the water environment are?

In fact, under certain circumstances, we can carry out disinfection treatment on some sewage and wastewater to ensure the quality of water! But this is one situation. Another is that it seeps into the water body during the disinfection process. Let’s take the epidemic period as an example! During the epidemic, large-scale disinfection of roads, greenery and other areas (whether indoors or outdoors) was carried out through surface runoff. Then the problem arises: the extensive disinfection leads to the emergence of some residual chlorine (disinfectant residues). How can these disinfectants seep into the underground or be discharged into rivers through surface runoff, causing water source pollution? This will have a significant impact on the microorganisms and aquatic organisms in the water body. There was once a case: Excessive disinfection, with a large amount of bleach in fresh water, caused the total residual chlorine in the water to be too high, resulting in a large number of fish deaths in the water, and it took a long time for the water to self-purify and return to normal.

It should be noted that excessive residual chlorine can cause inhibitory effects on activated sludge, thereby affecting the normal operation of the water biochemical treatment system. In addition, disinfectants also undergo chemical reactions during water treatment, generating by-products that pose a threat to the ecological environment and human health.

In conclusion, we should understand that after treating sewage and wastewater, a water quality detector should be used to monitor various indicators in the water, monitor the addition of residual chlorine, and ensure quality! To avoid the harm caused by excessive chlorine!

Remember! It is very important to do a good job in online water quality monitoring. Do not do it with an indifferent attitude!