Introduction, D.G. Rao, R. Senthilkumar, J.A. Byrne, and S. Feroz Solar Photo-Fenton as Advanced Oxidation Technology for Water Reclamation, Sixto Malato Rodriguez, Nikolaus Klamerth, Isabel Oller Alberola, and Ana Zapata Sierra Solar Photocatalytic Treatment of Wastewater, J.A. Byrne and P. Fernandez-Ibanez Advanced Oxidation Processes: Basics and Applications, Rakshit Ameta, Anil Kumar, P. B. Punjabi, and Suresh C. Ameta Impinging-Jet Ozone Bubble Column Reactors, Mahad S. Baawain Biological Treatment of Wastewaters: Recent Trends and Advancements, K. Vijayaraghavan Removal of Heavy Metals by Seaweeds in Wastewater Treatment, R. Senthilkumar, M. Velan, and S. Feroz Microbial Treatment of Heavy Metals, Oil and Radioactive Contamination in Wastewaters, Sourish Karmakar, Arka Pravo Kundu, Kanika Kundu, and Subir Kundu Anaerobic Wastewater Treatment in Tapered Fluidized Bed Reactor, R. Parthiban Treatment of Effluent Waters in Food Processing Industries, D. G. Rao, N. Meyyappan, and S. Feroz Removal of Lower-Molecular-Weight Substances from Water and Wastewater: Challenges and Solutions, V. Jegatheesan, J. Virkutyte, L. Shu, J. Allen, Y. Wang, E. Searston, Z. P. Xu, J. Naylor, S. Pinchon, C. Teil, D. Navaratna, and H. K. Shon Treatment and Reuse Potential of Graywater from Urban Households in Oman, Mushtaque Ahmed, Abdullah Al-Buloshi, and Ahmed Al-Maskary Anaerobic Fixed Bed Reactor for Treatment of Industrial Wastewater, Joseph V. Thanikal Index