Waste discharges from municipal sewage treatment plants into rivers, streams, lakes, estuaries and coastal waters are a significant source of water quality problems throughout the country. States report that municipal discharges are the second leading source of water quality impairment in all of the nation's waters. This book provides information on the emerging technologies in wastewater treatment in order to meet the challenge of keeping progress in wastewater pollution abatement ahead of population growth, changes in industrial processes and technological developments.