5.7 Example: Refugee Camp

In the humanitarian response for the Rohingya refugee camp in Bangladesh, chlorination is used as a disinfection method that is applied as a final step before discharge or infiltration at some of the treatment sites. The effluent is mixed with chlorine in the chlorination tank in batches, with a reaction time of 1 hour, as described in the IFRC Aerobic Faecal Waste Treatment Unit case study published on Octopus before discharge. Additionally, the IOM Decentralized Wastewater Treatment System (DEWATS) applies the chlorination technique as a final step by adding chlorine at the final stage to achieve a concentration of 15mg/l before infiltration, thereby achieving the quality of effluent after treatment for reuse for irrigation.