Pak, D Chang, W 2024-01-21T14:33:15Z 2024-01-21T14:33:15Z 2022-01-11 2000-01 0273-1223 https://pubs.kist.re.kr/handle/201004/141626 A two-biofilter system operated under alternate conditions of anaerobic/aerobic was tested to simultaneously remove nitrogen and phosphorus from sewage. The factors affecting simultaneous removal of nitrogen and phosphorus by the two-biofilter system were investigated. Those factors appeared to be influent COD/T-N and COD/T-P ratio, nitrogen loading rate and hydraulic retention time. Nitrite and nitrate produced in the biofilter in aerobic condition affected phosphorus removal by the two-biofilter system. The amount of biomass wasted during the backwash procedure also affected total nitrogen and phosphorus removal by the system. English I W A PUBLISHING NITRITE BUILDUP NITRIFICATION REACTOR RELEASE Simultaneous removal of nitrogen and phosphorus in a two-biofilter system Article 1 WATER SCIENCE AND TECHNOLOGY, v.41, no.12, pp.101 - 106 WATER SCIENCE AND TECHNOLOGY 41 12 101 106 scie scopus 000088958500015 2-s2.0-0033899542 Engineering, Environmental Environmental Sciences Water Resources Engineering Environmental Sciences & Ecology Water Resources Article; Proceedings Paper NITRITE BUILDUP NITRIFICATION REACTOR RELEASE two-biofilter system alternating conditions (anaerobic/aerobic) simultaneous removal of nitrogen and phosphorus sewage treatment