Slow sand filtration of raw wastewater using biochar as an alternative filtration media.

ABSTRACT: The efficiency of anaerobic biofilters (AnBF) as low-cost wastewater treatment systems was investigated. Miscanthus-biochar was used as filtration media and compared with sand as a common reference material. Raw sewage from a municipal wastewater treatment plant was stored in a sedimentation tank for two days to allow pre-settlement of wastewater particles. Subsequently, wastewater was treated by AnBFs at 22 °C room temperature at a hydraulic loading rate of 0.05 m∙h^-1 with an empty bed contact time of 14.4 h and a mean organic loading rate of 509 ± 173 g_COD∙m^-3∙d^-1. Mean removal of chemical oxygen demand (COD) of biochar filters was with 74 ± 18% significantly higher than of sand filters (61 ± 12%). In contrast to sand filters with a mean reduct

SUBMITTER: Kaetzl K 

PROVIDER: S-EPMC6985130 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature