Elemental sulfur recovery and spatial distribution of functional bacteria and expressed genes under different carbon/nitrate/sulfide loadings in up-flow anaerobic sludge blanket reactors

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• 作者：Cong Huang^a ; Qian Liu^a ; Chuan Chen^a ; Fan Chen^a ; You-Kang Zhao^a ; Ling-Fang Gao^b ; Wen-Zong Liu^b ; Ji-Zhong Zhou^c ; ^d ; Zhi-Ling Li^a ; ^{lzlhit@163.com} ; Ai-Jie Wang^a ; ^b ; ^{waj0578@hit.edu.cn}
• 关键词：Elemental sulfur recovery ; Influent loading ; Denitrifying sulfide removal (DSR) process ; Up-flow anaerobic sludge blanket (UASB) reactor ; Bacterial structure
• 刊名：Journal of Hazardous Materials
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：324
• 期：part_PA
• 页码：48-53
• 全文大小：1552 K
• 卷排序：324

文摘

The variations of influent loading altered S0 recovery rate and bacterial structure. The optimized loads of acetate, nitrate and sulfide were 0.95, 0.79, and 0.34 kg d−1 m−3, respectively. The highest S0 recovery rate was 77.9% when Thauera and Sulfurimonas were predominant. Insufficient loading caused a low S0 yield and sulfide oxidation activity. Excess nutrient loading caused the over-oxidation of S0 to sulfate.