In solids-contact basins, how often should the solids concentration be determined?

In solids-contact basins, determining the solids concentration at least twice per day is essential for maintaining effective and efficient treatment processes. This frequent monitoring allows operators to quickly assess the performance of sedimentation and contact processes within the basin. It ensures that the solids are being adequately removed and helps in managing the basin's hydraulic and solid retention times effectively.

Regular and frequent measurements enable timely adjustments to operational parameters, thus preventing issues like excessive solids buildup, which could lead to inefficiencies or treatment failures. By maintaining vigilance over solids concentration, operators can ensure the quality of the treated water remains within acceptable limits and processes are optimized for peak efficiency. This high frequency of monitoring is part of best practices to ensure compliance with regulatory standards and to promote the reliable operation of drinking water treatment facilities.