A view of the Urbana & Champaign Sanitary District's trickling filter system in its infancy in the 1920s at its plant in northeast Urbana. A plaque on the wall of the Urbana & Champaign Sanitary ...
Aesthetic, low energy, low maintenance, cost-effective-Underground Trickling Bio-Filter (UTB) technology fulfils these attributes as an unconventional option for onsite domestic wastewater treatment ...
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