Small Diameter Effluent Systems - National Small Flows Clearinghouse - Product WWVTPE04 - A small diameter effluent sewer (SDES) collects effluent from septic tanks at each service connection and transports it by gravity to a treatment plant or a conventional sewer. Synonyms include small diameter gravity sewers, septic tank effluent drains, and small bore sewers. The volume of septic tanks is often 1,000 gallons, but varies widely.
15 сен 2024
