https://scholars.lib.ntu.edu.tw/handle/123456789/576280
標題: | Influence of ferrous iron dosing strategy on aerobic granulation of activated sludge and bioavailability of phosphorus accumulated in granules | 作者: | Cai W Jin M Zhao Z Lei Z Zhang Z Adachi Y Lee D.-J. DUU-JONG LEE |
關鍵字: | Activated sludge process; Biochemistry; Granular materials; Iron; Phosphate minerals; Phosphorus; Aerobic granular sludges; Aerobic granulation; Constant dosing; Conventional activated sludges; Ferrous iron; Granule formations; Pollutants removal; Pulse dosing; Granulation; ferrous ion; phosphorus; activated sludge; Article; bioaccumulation; bioavailability; biomass; concentration (parameters); molecular stability; physical chemistry; physical parameters; priority journal; retention time; waste water | 公開日期: | 2018 | 卷: | 2 | 起(迄)頁: | 7-14 | 來源出版物: | Bioresource Technology Reports | 摘要: | Two different Fe2+ dosing strategies (with the same daily Fe2+ dosage of 19.5 mg/d), i.e. constant (R1 with fixed 5 mg Fe/L in influent) and pulse dosing (R2 with 30 mg Fe/L in influent only during the first cycle every day) were tested in two identical reactors and their comparison was conducted on granule formation, stability and performance on pollutants removal and P accumulation. Results showed that granules appeared earlier and relatively smaller in R2 (day 9), while biomass increased faster in R1. Relatively high and stable P removal could be achieved, averagely 92% in R1 and 81% in R2. The granules in R1 accumulated more P (45.6 mg/g-SS) with higher bioavailability (95%) after 48 days’ operation, especially with high non-apatite inorganic P content (36.2 mg/g-SS). This work also suggests that Fe2+ dosing strategy can be applied in conventional activated sludge processes when high bioavailable P recovery is targeted. ? 2018 Elsevier Ltd |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85048267175&doi=10.1016%2fj.biteb.2018.03.004&partnerID=40&md5=5ecdc3a548b5bea2f3024f4831962bc5 https://scholars.lib.ntu.edu.tw/handle/123456789/576280 |
ISSN: | 2589014X | DOI: | 10.1016/j.biteb.2018.03.004 |
顯示於: | 化學工程學系 |
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