Environmental engineering is a sub-discipline of civil engineering and chemical engineering. It is the domain of engineering that makes use of diverse branches of science like chemistry, biology, ecology, geology, hydraulics, hydrology, microbiology and mathematics. The aim of environmental engineering is to create solutions that will protect the health of living organisms, improve the quality of environment and protect the ecosystem. It also focuses on waste water management, air and water pollution control, water disposal, etc. This discipline also studies the effects of technologies on the environment. Some of the effects include acid rain, global warming, water pollution, air pollution, automobile exhaust, etc. This book contains some path-breaking studies in the field of environmental engineering. Some of the diverse topics covered herein address the varied branches that fall under this category. It is a vital tool for all researching and studying this field.