This publication provides introductory technical guidance for civil engineers, environmental engineers and other professional engineers, construction managers and wastewater treatment plant managers interested in wastewater sludge disposal. Here is what is discussed: 1. GENERAL CONSIDERATIONS, 2. SLUDGE PUMPING, 3. SLUDGE THICKENING, 4. SLUDGE CONDITIONING, 5. SLUDGE DEWATERING, 6. SLUDGE DIGESTION, 7. SLUDGE STORAGE.