EFFECTS OF TREATMENT CHANGES ON CHLORAMINE DEMAND AND DECAY

Treatment influences on the chloramine demand. Based on experimental approaches in water treatment plant facilities, chloramine demand and decay are reviewed in order to get a stable residual of oxidant in the distribution system. To increase stability, the removal of total organic carbon is required either by granular activated carbon or nanofiltration. Ozonation increase chloramine demand but chlorine or chlorine dioxide help to maintain a stable chloramine residual.