Project Summary: Trickling Filter/Solids Contact Process: Full-Scale Studies

摘要

This report outlines the characteristics that distinguish the trickling filter/solids contact (TF/SC) process for municipal wastewater treatment from other similar processes. The SC feature provides a short aerobic contact period between the TF effluent and the recycled underflow solids from the secondary clarifier to promote solids capture and produce a final effluent with a low suspended solids concentration. The report also summarizes the results of field studies at TF/SC facilities in Oconto Falls, Wisconsin; Tolleson, Arizona; Medford, Oregon; and Chilton, Wisconsin. These studies and a review of historical operating records at these plants and at Corvallis, Oregon (where the process was first successfully demonstrated in 1979), provide additional insight into the performance of the TF/SC process under different design and loading conditions.