This paper assesses the operational and design aspects of coagulation and flocculation in upflow gravel filters (CF-UGF) in a multi-stage filtration (MSF) plant. This study shows that CF-UGF units improve the performance of MSF considerably. when the system operates with turbidity above 30 NTU. It strongly reduces the load of particulate material before the water enters in the slow sa... https://allfixelectricales.shop/product-category/urn-thermostat/