Dr. Clarence H. Roy, a pioneer in modular treatment systems for surface finishing, explains wastewater / waste treatment in clear, concise language. Focusing on technology, rather than regulatory compliance, the book studies wastewater sources and discharge limits; water and chemical conservation and recover; chemistry principles and concepts, including molecules and compounds, dissociation and ionization, redox reactions, pH, and normality and titration; instrumentation and control; operation of such pretreatment processes as floating oil removal, hexavalent chromium reduction, cyanide oxidation and acid/alkali pretreatments; treatment processes of pH adjustment, flocculation, suspended solids management, operational logs and records; sludge dewatering; system maintenance – mechanical and electrical; and safety and health concerns. Contains 46 figures and an appendix, with same Material Safety Data Sheets (MSDSs) for the more-frequently used waste treatment chemicals.