Preface

This book provides useful information about wastewater treatment engineering, which is divided into physical wastewater treatment, biological wastewater treatment, and chemical wastewater treatment. The physical wastewater treatment includes flow equalization, floata‐ tion, precipitation, sedimentation, screening, filtration, and reverses osmosis. The biological wastewater treatment, which is the main focus of the book, includes the following: (1) biore‐ mediation of wastewater, which includes aerobic treatment (oxidation ponds, aeration la‐ goons, aerobic bioreactors, activated sludge, percolating or trickling filters, biological filters, rotating biological contactors, and biological removal of nutrients) and anaerobic treatment (anaerobic bioreactors and anaerobic lagoons); (2) phytoremediation of wastewater, which includes constructed wetlands, rhizofiltration, rhizodegradation, phytodegradation, phy‐ toaccumulation, phytotransformation, and hyperaccumulators; and (3) mycoremediation of wastewater. The chemical wastewater treatment includes chemical precipitation (coagula‐ tion and flocculation), ion exchange, neutralization, adsorption, and disinfection (chlorina‐ tion/dechlorination, ozone, and UV light). Additionally, this book elucidates and illustrates the wastewater treatment plants in terms of plant sizing, plant layout, plant design, and plant location.

Each chapter of the book provides precious and up-to-date knowledge from basics to apex, allowing readers to understand more deeply. This book will be very helpful for academics, scientists, scholars, researchers, and undergraduate and graduate students worldwide who are specializing in engineering, environmental engineering, civil engineering, biosystems engineering, agricultural engineering, and biological engineering. Additionally, it will be very helpful for NGOs, universities, and research institutes and centers.

> **Dr. sc. agr. Mohamed Samer** Associate Professor Department of Agricultural Engineering Faculty of Agriculture, Cairo University Giza, Egypt
