Efficient regulation of elemental sulfur recovery through optimizing working height of upflow anaerobic sludge blanket reactor during denitrifying sulfide removal process.
In this study, two lab-scale UASB reactors were established to testify S(0) recovery efficiency, and one of which (M-UASB) was improved from the previous T-UASB by shortening reactor height once S(2-) over oxidation was observed. After the height was shortened from 60 to 30cm, S(0) recovery rate was improved from 7.4% to 78.8%, and while, complete removal of acetate, nitrate and S(2-) was simultaneously maintained. Meanwhile, bacterial community distribution was homogenous throughout the reactor, with denitrifying sulfide oxidization bacteria predominant, such as Thauera and Azoarcus spp., indicating the optimized condition for S(0) recovery. The effective control of working height/volume in reactors plays important roles for the efficient regulation of S(0) recovery during DSR process.
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China.
Cong
C
Huang
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China.
Zhi-Ling
ZL
Li
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China.
Fan
F
Chen
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China.
Qian
Q
Liu
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China.
You-Kang
YK
Zhao
Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China.
Ling-Fang
LF
Gao
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China.
Chuan
C
Chen
Institute for Environmental Genomics, Department of Microbiology and Plant Biology, University of Oklahoma, Norman, OK 73019, USA; Earth Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94270, USA.
Ji-Zhong
JZ
Zhou
State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, PR China; Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, PR China. Electronic address: waj0578@hit.edu.cn.
Ai-Jie
AJ
Wang
D000085:Acetates / Q000302:isolation & purification / Q000378:metabolism; D020627:Azoarcus / Q000235:genetics / Q000378:metabolism; D001419:Bacteria / Q000235:genetics / Q000378:metabolism; D019149:Bioreactors / Q000382:microbiology*; D002244:Carbon / Q000302:isolation & purification; D058440:Denitrification; D004867:Equipment Design; D059013:Microbial Consortia / Q000235:genetics / Q000502:physiology; D009566:Nitrates / Q000302:isolation & purification / Q000378:metabolism; D010084:Oxidation-Reduction; D012722:Sewage / Q000382:microbiology; D013431:Sulfates / Q000378:metabolism; D013440:Sulfides / Q000737:chemistry / Q000302:isolation & purification*; D013455:Sulfur / Q000302:isolation & purification*; D020628:Thauera / Q000235:genetics / Q000378:metabolism; D014865:Waste Disposal, Fluid / Q000295:instrumentation / Q000379:methods*
D000085:Acetates; D009566:Nitrates; D012722:Sewage; D013431:Sulfates; D013440:Sulfides; D013455:Sulfur; D002244:Carbon
Bacterial community; Denitrifying sulfide removal (DSR) process; Effective reactor working height/volume; S(0) recovery rate; Upflow anaerobic sludge blanket (UASB) reactor