title: Ambient temperature SNAD process treating anaerobic digester liquor of swine wastewater.
abstract: In present study, effluent from anaerobic digestion of swine wastewater was treated by the simultaneous partial nitrification, anaerobic ammonium oxidation and denitrification (SNAD) process using a lab scale 5L sequencing batch reactor (SBR) under ambient temperature. The fluctuation of anaerobic digester liquor quality (COD, 387 ± 145 mg/L; TKN, 662 ± 190 mg/L; NH₄(+)-N, 519 ± 134 mg/L) and temperature created difficulties to develop a stable SNAD process in the SBR (days 1-285). Fed batch feeding strategy was adopted to have a stable condition in the reactor and overcome the negative effects of organic nitrogen. The average total nitrogen, NH₄(+)-N and COD removal efficiencies in the SBR under steady state conditions (days 485-523) were 80%, 96% and 76%, respectively. The results showed that presence of organic nitrogen, mode of feeding and reactor temperature affects the SNAD process.
authors.affiliation: Institute of Environmental Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan.
authors.forename: Achlesh
authors.initials: A
authors.lastname: Daverey
authors.forename: Nien-Tzu
authors.initials: NT
authors.lastname: Hung
authors.forename: Kasturi
authors.initials: K
authors.lastname: Dutta
authors.forename: Jih-Gaw
authors.initials: JG
authors.lastname: Lin
mesh_terms: D000818:Animals; D001421:Bacteria, Anaerobic / Q000378:metabolism*; D057919:Biological Oxygen Demand Analysis; D006863:Hydrogen-Ion Concentration; D009584:Nitrogen / Q000032:analysis / Q000737:chemistry; D013552:Swine; D013696:Temperature; D062065:Wastewater / Q000737:chemistry* / Q000382:microbiology; D018508:Water Purification / Q000379:methods
chemical_list: D009584:Nitrogen; D062065:Wastewater