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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/32661


    標題: Simultaneous biodegradation of tetrahydrofuran, 3-buten-1-ol and 1,4-butanediol in real wastewater by a pilot high-rate UASB reactor
    作者: Ni, Chen-Hua
    Chia-Yuan Chang(張家源)
    Lin, Yu-Chung
    Lin, Justin Chun-Te
    貢獻者: Ecodigital Technol Inc
    Chia Nan Univ Pharm & Sci, Dept Environm Engn & Sci
    EigenGreen Int Inc
    Feng Chia Univ, Dept Environm Engn & Sci
    關鍵字: Up-flow anaerobic sludge blanket
    Granulation
    Tetrahydrofuran
    3-Buten-1-ol
    1,4-Butanediol
    Biogas production. start-up
    日期: 2019-09
    上傳時間: 2020-07-29 13:54:11 (UTC+8)
    出版者: ELSEVIER SCI LTD
    摘要: A stream of wastewater from a synthetic-fibers manufacturing plant with high amount of tetrahydrofuran (THF), 3-buten-1-ol (BTO) and 1,4-butanediol (BDO) results in high chemical oxygen demand (COD). A pilot high rate up-flow anaerobic sludge blanket (UASB) reactor, which recirculation rate was set at three times of feed flow-rate, was conducted on-site and continuously run for 108 days. Volumeric organic loading rates were gradually adjusted from to 1.3 +/- 0.2 to 21.5 +/- 1.8 kg-COD.m(-3) d(-1) while corresponding COD in the influent increased from 1704 to the maximum up to 30700 mg L-1. Average removals of COD were 75.8%, while temperature, pH, dissolved oxygen, and oxidation reduction potential were intensively monitored throughout the pilot study. Average THF removals of 89.1% and complete BTO removals showed successful biodegradation in the UASB reactor. Meanwhile, average BDO removals increased significantly from 43.2% to 95.8%. In addition, increasing of biomass and food-to-microorganism ratios were performed well by rational regressions. Anaerobic granules were also developed well to the final size of 3-4 mm. Moreover, total biogas production rates were increased by operation days. The main biogas component (CH4) increases five times while the other two (CO2 and N-2) were kept steady. In general, start-up of the UASB for biodegradting real wastewaters containing high concentration of C4 chemicals was firstly demonstrated in the pilot study.
    關聯: International Biodeterioration & Biodegradation, v.143, 104698
    Appears in Collections:[職業安全衛生系(含防災所)] 期刊論文

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