Trihalogen methanes (THM)
The group of trihalogen methanes (chloroform and bromoform, among others) is suspected of being carcinogenic. Due to this, disinfectant byproducts are regulated and must follow some standards (for example the DIN19643-1 with 0.02 mg/l). In order to protect consumers, numerous value limits were set in place for drinking water as well. Impulse chlorination accelerates the development of THMs. Therefore; the goal must be to maintain a low and uniform chlorination level without endangering microbiological safety. The impurities can be removed through optimized flocculation or water adsorption.
The WAPOTEC solution: