Advances in Water Pollution Research features the 71 papers presented at the Sixth International Conference held in Jerusalem on June 18-23, 1972. These papers were those selected by the Programme Committee of the International Association on Water Pollution Research for discussion at the conference out of the 176 completed papers that were submitted. The topics of the papers in this book include industrial waste water problems, sewage treatment problems associated with solids, ponds, activated, sludge, groundwater pollution, trace metals in water, wastewater virology and microbiology, thermal pollution, and oxygen transfer. This book also provides the text of the discussion on these papers as well as the replies of the authors. This book will be of interest to persons dealing with studies on water pollution and pollution control.