Wastewater quality, standards and regulations, Wastewater treatment operations and units, Wastewater microbiology and Bio-kinetics, Wastewater collection system design, Design of wastewater treatment units (physical, chemical and biological: Activated Sludge, Trickling filters, RBCs, Stabilization ponds), Wastewater reuse, Sludge management, Solid waste management, Hazardous waste management & Environmental Systems Auditing.