Choi, Minkyu Chaudhary, Ramjee Lee, Minjoo Kim, Jihyun Cho, Kyungjin Chung, Yin-Chul Bae, Hyokwan Park, Joonhong 2024-01-19T18:02:25Z 2024-01-19T18:02:25Z 2021-09-05 2020-03 0960-8524 https://pubs.kist.re.kr/handle/201004/118895 To improve stability of nitrogen removal in partial nitritation (PN)-anammox process, flat-type cryogel films using poly (vinylalcohol) named as FT-CPVAF were applied in continuous reactors. Stable PN operation was maintained with short acclimation of 8 days and ammonium oxidation rate of 1.68 +/- 0.12 kg N m(-3) d(-1) comparatively higher than previous studies. The nitrogen removal, initially inhibited by an oxygen shock, was immediately reactivated with short lag-period by immobilization of anammox bacteria in FT-CPVAF. A novel two-stage PN-anammox process was operated in a continuous flow using FT-CPVAF for treatment of ammonium-rich synthetic wastewater (influent 315 mg NH4+-N L-1) showing 89.6 +/- 0.76% of nitrogen removal at short hydraulic retention time (7.7 h). The use of FT-CPVAF enhanced selective enrichment of AOB and anammox bacter is confirmed by high-throughput sequencing of i.e., relative abundances of Nitrosomonas europaea C-31 (37.14% in PN reactor) and 'Candidatus Jettenia caeni' (34.36% in anammox reactor). English ELSEVIER SCI LTD Enhanced selective enrichment of partial nitritation and anammox bacteria in a novel two-stage continuous flow system using flat-type poly (vinylalcohol) cryogel films Article 10.1016/j.biortech.2019.122546 1 BIORESOURCE TECHNOLOGY, v.300 BIORESOURCE TECHNOLOGY 300 N scie scopus 000509985900033 2-s2.0-85077325412 Agricultural Engineering Biotechnology & Applied Microbiology Energy & Fuels Agriculture Biotechnology & Applied Microbiology Energy & Fuels Article AUTOTROPHIC NITROGEN REMOVAL LONG-TERM PERFORMANCE START-UP PARTIAL NITRIFICATION OXIDIZING BACTERIA SLUDGE REACTOR AMMONIA OXIDATION INHIBITION Partial nitritation Anammox Immobilization PVA cryogel Reactor microbiome