The past thirty years have witnessed a growing worldwide desire that po- tive actions be taken to restore and protect the environment from the degr- ing effects of all forms of pollution-air, water, soil, and noise. Because pollution is a direct or indirect consequence of waste, the seemingly idealistic demand for "e;zero discharge"e; can be construed as an unrealistic demand for zero waste. However, as long as waste continues to exist, we can only attempt to abate the subsequent pollution by converting it to a less noxious form. Three major questions usually arise when a particular type of pollution has been id- tified: (1) How serious is the pollution? (2) Is the technology to abate it ava- able? and (3) Do the costs of abatement justify the degree of abatement achieved? This book is one of the volumes of the Handbook of Environmental Engineering series. The principal intention of this series is to help readers f- mulate answers to the last two questions above. The traditional approach of applying tried-and-true solutions to specific pollution problems has been a major contributing factor to the success of en- ronmental engineering, and has accounted in large measure for the establi- ment of a "e;methodology of pollution control. "e; However, the realization of the ever-increasing complexity and interrelated nature of current environmental problems renders it imperative that intelligent planning of pollution abatement systems be undertaken.

The past thirty years have witnessed a growing worldwide desire that po- tive actions be taken to restore and protect the environment from the degr- ing effects of all forms of pollution—air, water, soil, and noise. Because pollution is a direct or indirect consequence of waste, the seemingly idealistic demand for “zero discharge” can be construed as an unrealistic demand for zero waste. However, as long as waste continues to exist, we can only attempt to abate the subsequent pollution by converting it to a less noxious form. Three major questions usually arise when a particular type of pollution has been id- tified: (1) How serious is the pollution? (2) Is the technology to abate it ava- able? and (3) Do the costs of abatement justify the degree of abatement achieved? This book is one of the volumes of the Handbook of Environmental Engineering series. The principal intention of this series is to help readers f- mulate answers to the last two questions above. The traditional approach of applying tried-and-true solutions to specific pollution problems has been a major contributing factor to the success of en- ronmental engineering, and has accounted in large measure for the establi- ment of a “methodology of pollution control. ” However, the realization of the ever-increasing complexity and interrelated nature of current environmental problems renders it imperative that intelligent planning of pollution abatement systems be undertaken.

Potable Water Aeration Jerry R. Taricska, Lawrence K. Wang, Yung-Tse Hung, and Kathleen Hung Li Air Stripping Ju-Chang Huang and Chii Shang Adsorptive Bubble Separation and Dispersed Air Flotation Lawrence K. Wang Powdered Activated Carbon Adsorption Yung-Tse Hung, Howard H. Lo, Lawrence K. Wang, Jerry R. Taricska, and Kathleen Hung Li Diatomaceous Earth Precoat Filtration Lawrence K. Wang Tertiary Microscreening Nazih K. Shammas, Chein-Chi Chang, and Lawrence K. Wang Membrane Filtration J. Paul Chen, Honghui Mou, Lawrence K. Wang, and Takeshi Matsuura Ion Exchange J. Paul Chen, Lei Yang, Wun-Jern Ng, Lawrence K. Wang, and Sook-Leng Thong Fluoridation and Defluoridation Jerry R. Taricska, Lawrence K. Wang, Yung-Tse Hung, and Kathleen Hung Li Ultraviolet Radiation for Disinfection J. Paul Chen, Lei Yang, Lawrence K. Wang, and Beiping Zhang Water Chloridation and Chloramination Lawrence K. Wang Waste Chlorination and Stabilization Lawrence K. Wang Dechlorination Rajagopalan Ganesh, Lawrence Y. C. Leong, Maria W. Tikkanen, and Gregory J. Peterka Advanced Oxidation Processes M. B. Ray, J. Paul Chen, Lawrence K. Wang, and Simo Olavi Pehkonen Chemical Reduction/Oxidation Lawrence K. Wang and Yan Li Oil Water Separation Puangrat Kajitvichyanukul, Yung-Tse Hung, and Lawrence K. Wang Evaporation Processes Lawrence K. Wang, Nazih K. Shammas, Clint Williford, Wei-Yin Chen, and Georgios P. Sakellaropoulos Solvent Extraction, Leaching, and Supercritical Extraction Paul Scovazzo, Wei-Yin Chen, Lawrence K. Wang, and Nazih K. Shammas Appendix: Conversion Factors for Environmental Engineers Lawrence K. Wang Index

The past thirty years have witnessed a growing worldwide desire that po- tive actions be taken to restore and protect the environment from the degr- ing effects of all forms of pollution—air, water, soil, and noise. Because pollution is a direct or indirect consequence of waste, the seemingly idealistic demand for “zero discharge” can be construed as an unrealistic demand for zero waste. However, as long as waste continues to exist, we can only attempt to abate the subsequent pollution by converting it to a less noxious form. Three major questions usually arise when a particular type of pollution has been id- tified: (1) How serious is the pollution? (2) Is the technology to abate it ava- able? and (3) Do the costs of abatement justify the degree of abatement achieved? This book is one of the volumes of the Handbook of Environmental Engineering series. The principal intention of this series is to help readers f- mulate answers to the last two questions above. The traditional approach of applying tried-and-true solutions to specific pollution problems has been a major contributing factor to the success of en- ronmental engineering, and has accounted in large measure for the establi- ment of a “methodology of pollution control. ” However, the realization of the ever-increasing complexity and interrelated nature of current environmental problems renders it imperative that intelligent planning of pollution abatement systems be undertaken.