DOI: 10.1016/j.watres.2019.01.062
Scopus记录号: 2-s2.0-85062559475
论文题名: Field tests of cubic-meter scale microbial electrochemical system in a municipal wastewater treatment plant
作者: He W. ; Dong Y. ; Li C. ; Han X. ; Liu G. ; Liu J. ; Feng Y.
刊名: Water Research
ISSN: 431354
出版年: 2019
卷: 155 起始页码: 372
结束页码: 380
语种: 英语
英文关键词: Energy and economic analysis
; Field tests of wastewater treatment
; Microbial separator
; Pilot microbial electrochemical system (MES)
; Separate plug-in module architecture
英文摘要: A pilot microbial electrochemical system (MES) system with a total volume of 1.5 m 3 was developed and operated outdoor in a municipal wastewater treatment plant (WWTP). Microbial separator based on the dynamic biofilm on low-cost porous matrix was applied to replace ion exchange membranes (IEMs), while the separate plug-in module architecture allowed the totally 336 pairs of MES units and 14 separator modules to be integrated into one wastewater tank. The separator layer equally divided the wastewater tank into 7 cathodic and 8 anodic compartments. Fed with primary sedimentation tank effluent of WWTP, the pilot MES achieved stable removal efficiency for chemical oxygen demand (91 ± 3%), total nitrogen (64 ± 2%) and ammonium nitrogen (91 ± 3%), which were complied with the first grade A standard of pollutants for municipal wastewater treatment plant (DSPMWTP) in China. The stable power output of pilot MES was 406 ± 30 mW m −3 based on effective liquid volume, or energy conversion performance of 2.03 × 10 −3 kWh m −3 (one cubic meter of influent wastewater). The pilot MES achieved much lower effluent COD of 25 ± 7 mg L −1 with HRT of 5 h, while that of activated sludge process in WWTP was 43 ± 6 mg L −1 under HRT of 12 h. Even though the aeration of biocathode demanded a net electricity consumption of 3.44 × 10 −3 kWh m −3 , the low operation energy requirement for pilot MES was only 12% of that in a typical activated sludge process (0.3 kWh m −3 ). By avoiding the utilization of IEMs and redundant structural materials, the pilot MES achieved a low system cost of $1702.1 (or $1135 m −3 ) as well and promoted the further real-world application of MES. © 2019 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/121886
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, No 73 Huanghe Road, Nangang District, Harbin, 150090, China
Recommended Citation:
He W.,Dong Y.,Li C.,et al. Field tests of cubic-meter scale microbial electrochemical system in a municipal wastewater treatment plant[J]. Water Research,2019-01-01,155