What is the recommended solids loading rate for Dissolved Air Floatation Thickener?

The recommended solids loading rate for a Dissolved Air Floatation (DAF) Thickener is typically in the range of 1-2 pounds of Total Suspended Solids (TSS) per hour per square foot (HR·FT²). This range is considered optimal because it balances effective thickening with the operational efficiency of the equipment.

DAF thickeners utilize dissolved air to encourage the floating of solids, which can enhance the separation process. If the solids loading rate is too low, it may not utilize the capacity of the unit effectively, leading to inefficiencies. Conversely, if the loading rate exceeds the recommended range, it can overwhelm the system, resulting in poor performance and lower removal rates of solids.

Maintaining the appropriate loading rate is essential for ensuring that the solids settle correctly and that the process operates smoothly. This range is particularly pertinent in the context of typical wastewater treatment parameters, which help improve the overall efficiency of solids removal in treatment facilities.