Environmental Science Part 2:Water Resources and Treatment Topic 3:Water and wastewater treatment Prof.LI Fengting UNEP-TONGJI Institute of Environment for Sustainable Development College of Environmental Science and Engineering Tongji University
Environmental Science Part 2: Water Resources and Treatment Topic 3: Water and wastewater treatment Prof. LI Fengting UNEP-TONGJI Institute of Environment for Sustainable Development College of Environmental Science and Engineering Tongji University
Outline Drinking water treatment Conventional treatment process Advanced treatment process Wastewater treatment Wastewater situation in China √ Wastewater treatment process Case Study of wastewater treatment plant √Algae separation √Reuse of wastewater Question: Which technology is“sustamable☒” Why?
Outline Drinking water treatment Conventional treatment process Advanced treatment process Wastewater treatment Wastewater situation in China Wastewater treatment process Case Study of wastewater treatment plant Algae separation Reuse of wastewater Question: Which technology is “sustainable?” Why?
Drinking Water Treatment
Drinking Water Treatment
Conventional scheme of water cycle Production of drinking water To protect the quality of the environment Assume a Effluents-之 safe water W treatment plant Adequate sanitation Sludges Open system-closed system
Conventional scheme of water cycle Sludges Effluents reject WW treatment plant Adequate sanitation Production of drinking water To protect the quality of the environment Assume a safe water Open system-closed system
Conventional treatment process of drinking water Coagulant C12 Disinfection Source Water Coagulation Sedimentation Filtration Clean water Distribution Customer← Pump COAGULATION SEDIMENTATION FILTRATION DISINFECTION STORAGE Source:US EPA
5 Source Water Coagulation Filtration Customer Pump Coagulant Sedimentation Clean water Cl2 Conventional treatment process of drinking water Disinfection Distribution Source: US EPA