PART I: Wastewater Management and reuse.- Wastewater Management Journey - From Indus Valley Civilisation to the Twenty first Century.- Integration of Membrane Processes for Optimal Wastewater Management.- Recent advances in the reuse of wastewaters for promoting sustainable development.- Reducing the Pollution from Tanneries by Processing Wastewater reuse and membrane technologies.- Wastewater Reuse Focused on Industrial Applications.- PART II: Wastewater Treatment Options.- Hazardous Agents in Wastewater - Public Health Impacts and Treatment Options for Safe Disposal and Reuse.- The small-scale approach in wastewater treatment.- Hospital Wastewaters: Quali-quantitative Characterization and for Treatment and Disposal.- Advances in Mechanical Dewatering of Wastewater Sludge Treatment.- Biosorption of Heavy Metals: Recent trends and Challenges.- Water Desalination by Sola Energy.- AOPs Applications on Dyes Removal.- Constructed wetlands for reducing pesticide inputs into surface water and groundwater.- PART III: Risk Assessment.- Tracing nitrogen sources and cycle in freshwater through Nitrogen and Oxygen isotopic research.- A step-wise approach to assess the fate of nitrogen species in agricultural lowlands.- Environmental risk assessment of WW II shipwreck pollution.- Methods to countermeasure the intrusion of seawater into coastal aquifer systems.