Optimalizace řízení desinfekce pitné vody při dálkové dopravě

Abstract

The present Diploma thesis focuses on disinfection issues in the drinking water supply system within the District Water-Main Network of Ostrava (OOV). In the OOV main, chlorine and chlorine dioxide are employed as disinfectants. Both agents are applied into crude water as pre-chlorination, as well as in product water at the outlet of water treating plants. The amount of chlorine in water is known to decrease due to a number of chemical reactions. The degree of this decrease depends on water quality, temperature and detention time. Further decrease takes place en route to the consumer, especially in large-scale water systems with delivery times exceeding several days. In such cases, additional chlorination is performed in the conveying system. The process of water treatment must be viewed as a complex resulting in the final quality of product water. Hence, the present work has analyzed the amount of chlorine used in water treatment plants and en route in water supply with the aim of optimizing water disinfection, i.e., to establish the lowest effective doses of disinfectants necessary for successful disinfection process.