Increasing the availability of wastewater treatment is an important issue to preserve the environmental development. The sewage treated should be discharged safely to the water courses according to governmental standard or even to pave a way to the next treatment level in aiming for water reuse. Challenge of such treatment is to reduce the investment cost of the applied system. This book presents an effective design regarding the low investment and proposes a new system using a gradual concentric chamber (GCC) reactor for treating low-strength wastewater. A clear and odorless effluent for the...