@article{oai:kumadai.repo.nii.ac.jp:00023878,
 author = {波戸崎, 律子 and 古川, 憲治 and Pham, Khac and Ritsuko, Hatozaki and Kenji, Furukawa},
 issue = {2},
 journal = {日本水処理生物学会誌},
 month = {Jun},
 note = {application/pdf, 論文(Article), In the process named SNAP (Single-stage Nitrogen removal using Anammox and Partial Nitritation), influent ammonium was removed as nitrogen gas by the combination of two autotrophic steps, partial nitritation and anammox, in one unit process. The reactors were packed with acryl-resin fiber biomass carriers and gently aerated. The synthetic influent, simulating secondary-treated landfill leachate, contained ammonium concentrations of 240 mg-N/l and 500 mg-N/l for reactors named SN-2 and SN-3, respectively. Data from 300 days of SNAP operation using reactor SN-2 showed ammonium conversions of 47.7∼88.1% with nitrogen removal rates of 0.31∼0.45 kg-N/㎥/d under various operational conditions. The best performance with loading rate of 0.6 kg-N/㎥/d was obtained at 35°C, pH 7.8, and aeration rate of 0.10 vvm (volume per volume per minute), with 88.1% ammonium conversion and 78.5% nitrogen removal. The results of about 100 days of operation for reactor SN-3 confirmed the treatment capability of SNAP process, with about 80% nitrogen removal with loading rates up to 1.0 kg-N/㎥/d. Some important characteristics of the SNAP process are discussed., 独立栄養性の窒素変換経路である部分亜硝酸化とanammoxを組み合わせた単一槽での窒素除去法 (SNAP法) で、流入水中のアンモニアを窒素ガスとして除去することができた。SNAPリアクタにはアクリル繊維性生物担体を充填し、緩やかな曝気を行うことでリアクタを混合攪拌した。埋立地浸出水の二次処理水に似せた合成浸出水のNH4-N濃度を240mg-N/l, 500 mg-N/lの二段階に設定し実験を行った。流入水NH4-N濃度を240mg-N/lに設定し300日間SNAP処理した結果、NH4-N変換率47.7～88.1%、T-N除去速度0.31～0.45 kg-N/㎥/dという結果を得た。T-N容積負荷量0.6 kg-N/㎥/d、35℃、pH7.8、曝気量0.10vvmの条件下において、NH4-N変換率88.1%、T-N除去率78.5%の処理成績が得られた。設定NH4-N濃度を500 mg-N/lに設定して約100日間運転し、T-N容積負荷量1.0 kg-N/㎥/dの条件下において、T-N除去率約80%というSNAPの優れた処理能力を確認した。幾つかの重要なSNAPプロセスの特性について論じた。, http://www.jstage.jst.go.jp/browse/jswtb/41/2/_contents},
 pages = {103--112},
 title = {Single-Stage Nitrogen Removal Using Anammox and Partial Nitritation(SNAP)for Treatment of Synthetic Landfill Leachate},
 volume = {41},
 year = {2005}
}