Chemical Sludge Treatment—A Way of the Futureby Robert S. Reimers, Tulane Sch of Public Health and, Tropical Medicine, New Orleans, United States,
Thomas G. Akers, Tulane Sch of Public Health and, Tropical Medicine, New Orleans, United States,
Abstract: Recently, chemical treatment of municipal sludges has become an alternative to incineration, composting, and digestion. The commercial processes have evolved into three categories of chemical treatment which are as follows: Acidic Treatment (Synox, Ozonics, Detox); Neutral Treatment (chemical pateurization, CCBA, wet chlorine oxidation); and Alkaline Treatment (Lime pasteurization, n-viro, Chemifix). Alkaline treatment processes have been implemented in over 100 cities in the United States. The other categories are moving from pilot-scale to full-scale processing. However, due to time constraints, many chemical processes are utilizing heat in order to reduce curing time, to increase product quality, and to enable these processes to be both technically and economically competitive.
Subject Headings: Chemical treatment | Chemical processes | Sludge | Alkalinity | Wastewater treatment plants | Chemical wastes | Industrial wastes | Acids | North America | United States
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