Sewage and LEachate Wastewater Treatment Using The Absorbent Waterloo Biofilter

摘要

The Waterloo Biofiliter~TM is a new type of free-draining aerobic biofilter developed at the University by Waterloo to treat domestic septic tank effluent, but it is also effective for municipal sewage, landfill leachate, and other wastewaters. The optimized physical properties of the light-weigth, plastic foam medoum enable design loading rates of 50 cm/d, or -10 times that of soil leach fields and sand filters. The medium combines high retention time with high surface area for microbial attachment and allows simulatneous loading and aeration. Separate flow paths for air and water allow concurrent aerobic and anaerobic reactions, and minimal solids production. Maintenance is similar to a sand filter but more readily cleaned if need. Typicla mature field removal rates i na single pass are: Municipal Primary Clarifier:>95