A Multi-Objective Approach for Minimizing Water Network Disinfection Time and Disinfectant Quantity

Water distribution systems are liable to be contaminated. Depending on the nature of the contamination the cleaning process may include disinfection. The common requirement for disinfection is that the disinfectants will have a minimal contact time and a predefined minimum concentration with the pipe. The regulations consider disinfection of a single main but no specific procedures are given for larger portions of the network. This paper presents a multi-objective optimal operation plan for disinfection of water systems. The objective functions are to minimize the disinfection time and minimize the disinfectant quantities used while keeping the required regulations.