AWWA JAW21274

This article is intended to serve as a guide for those who evaluate water treatment plants with the objective of lowering the turbidity of finished water produced from filtration plants in which chemical coagulation is part of the treatment process. Ineffective removal of turbidity may be related to several factors, including the physical condition of the facilities, the hydraulics of treatment processes, the quality of water, and the competence of the operating staff. By preplanning, the evaluation can be conducted in a logical fashion that results in consideration of all necessary and important aspects of the plant and its operation. Descriptions of the proper operation of each component in the process train and pragmatic remedies to improve performance are given. Includes 48 references, figures.