jäännösklooripitoisuudet

Jäännöskloori, often referred to as residual chlorine, is the amount of chlorine remaining in water after it has been disinfected. It is a measure of the chlorine's effectiveness in killing harmful microorganisms and its ability to provide a residual disinfectant that protects the water from recontamination as it travels through the distribution system. The presence of jäännöskloori indicates that disinfection has occurred and that the water is being protected.

There are two main forms of jäännöskloori: free chlorine and combined chlorine. Free chlorine, such as hypochlorous acid (HOCl) and hypochlorite ion (OCl-), is the most effective form for disinfection. Combined chlorine is formed when free chlorine reacts with ammonia and organic compounds present in the water, forming chloramines. While chloramines are less potent disinfectants than free chlorine, they are more stable and can provide a longer-lasting residual in the water.

The concentration of jäännöskloori is carefully monitored by water treatment facilities to ensure adequate disinfection without exceeding regulatory limits. Levels that are too low may not provide sufficient protection against microbial regrowth, while levels that are too high can lead to undesirable taste and odor issues, as well as potential health concerns. Regulatory agencies set maximum allowable concentrations for both free and combined chlorine in drinking water. Testing for jäännöskloori is a routine part of water quality management.