Ratni Juliardi A.R Naniek*, Rudy Laksmono, Firra Rosariawari and Erwin Chandra
Environmental Engineering Department-University of Pembangunan Nasional “Veteran” Jawa Timur Surabaya, East Java, Indonesia
* E-mail: naniktlupn@yahoo.com
In Indonesia, the contamination from domestic wastewater is becoming the greatest pollutant and reaches up to 85% that goes into the body of water. This might worsen the river water quality. To anticipate this condition, there should be some way out, by making use of wastewater as a source of energy. One of those systems is by employing Cone-tray Cascade Aerator combined with Biofilter by using Hydrilla plant which can be used as an alternative of waste water treatment for both domestic and institutional scale. This research was aimed at determining the system capability of aeration combined with biofilter by using hydrilla plant to reduce or eliminate the pollutant load of BOD, COD, and TSS. This research was conducted in a continuous stream of water at 200L/hour. The result showed that the best system of Conetray Cascade Aerator combined with biofilter could reduce BOD as much as 69,11%, COD at 61,14%, and TSS at 65,45%.
Key words: Domestic Wastewater / Aeration / Conetray Cascade Aerator / Biofilter / Hydrilla