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Country Cambodia China Indonesia Japan Lao PDR Malaysia Myanmar Philippines Republic of Korea Thailand Viet Nam   Treatment process Aerobic biochemical treatment Anaerobic biochemical treatment Natural process Advanced treatment Physicochemical treatment Wastewater characteristics Domestic wastewater Domestic wastewater (household wastewater + night soil) Domestic wastewater (household wastewater) Domestic wastewater (night soil) Domestic wastewater (night soil + johkasou sludge)   Ambient water Leachate   Industrial wastewater (food processing factories) Industrial wastewater (beverage production factories) Industrial wastewater (fiber/clothing factories) Industrial wastewater (dyeing factories) Industrial wastewater (paper manufacturing and pulp factories) Industrial wastewater (metal plating factories) Industrial wastewater (leather factories) Industrial wastewater (chemical factories) Industrial wastewater (iron and steel making factories) Industrial wastewater (electronic components factories) Industrial wastewater (livestock farms) Industrial wastewater (rubber and latex factories) Operation and maintenance Automatic operation Unmanned operation Manual operation Natural system (no use of electricity) Sludge-less Maintenance-free