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题名: Evaluation of sludge reduction of three metabolic uncouplers in laboratory-scale anaerobic-anoxic-oxic process
作者: Li, Ping; Li, Hechao; Li, Jin; Guo, Xuesong; Liu, Junxin; Xiao BenYi(肖本益)
刊名: BIORESOURCE TECHNOLOGY
出版日期: 2016-12
卷号: 221, 页码:31-36
关键词: Evaluation ; Metabolic uncouplers ; Sludge reduction ; Sludge reduction mechanism ; Wastewater treatment efficiency
DOI: 10.1016/j.biortech.2016.09.019
部门归属: 中国科学院环境生物技术重点实验室
英文摘要: To evaluate the sludge reduction of three metabolic uncouplers (3,3',4',5-tetrachlorosalicylanilide (TCS), 2,4-dichlorophenol (DCP), and tetrakis (hydroxymethyl) phosphonium sulfate (THPS)), we conducted continuous experiments on laboratory-scale anaerobic-anoxic-oxic processes. The three metabolic uncouplers were separately added in each oxic tank of the three systems, and a system without uncoupler addition was used as control. During the 85-day operation, sludge production and observed growth yields decreased to 38.6% and 16.98%, 43.4% and 17.55%, and 39.3% and 17.04% by the addition of TCS, DCP, and THPS, respectively. The addition of metabolic uncouplers slightly reduced the wastewater treatment efficiencies of the system (about 1.1-8.7%) and increased sludge SVIs (about 69.9-80.6%). Meanwhile, the differences among three metabolic uncouplers were little. Besides metabolic uncoupling and maintenance metabolism, which exist in the TCS-and DCP-added systems, lysis-cryptic growth also exists in the THPS-added system. (C) 2016 Elsevier Ltd. All rights reserved.
收录类别: SCI
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内容类型: 期刊论文
URI标识: http://ir.rcees.ac.cn/handle/311016/36126
Appears in Collections:中国科学院环境生物技术重点实验室_期刊论文

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