DOI: 10.1016/j.watres.2018.02.022
Scopus记录号: 2-s2.0-85042375552
论文题名: Improved sulfide mitigation in sewers through on-line control of ferrous salt dosing
作者: Ganigué R. ; Jiang G. ; Liu Y. ; Sharma K. ; Wang Y.-C. ; Gonzalez J. ; Nguyen T. ; Yuan Z.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 135 起始页码: 302
结束页码: 310
语种: 英语
英文关键词: Chemical dosing
; Corrosion
; Online control
; Sewer systems
; Sulfide control
Scopus关键词: Corrosion
; Cost effectiveness
; Online systems
; Salts
; Sewage
; Sewers
; Chemical dosing
; Comprehensive model
; Cost effective
; Dissolved sulfide
; Ferrous salts
; High-precision
; On-line controls
; Sewer system
; Sulfur compounds
; rain
; sodium chloride
; sulfide
; ferrous ion
; sulfide
; algorithm
; assessment method
; chemical analysis
; control system
; corrosion
; flow measurement
; numerical model
; salt
; sewer network
; sulfide
; Article
; online monitoring
; priority journal
; sewage
; sewer
; algorithm
; Australia
; chemistry
; equipment design
; oxidation reduction reaction
; pH
; reproducibility
; Algorithms
; Australia
; Equipment Design
; Ferrous Compounds
; Hydrogen-Ion Concentration
; Oxidation-Reduction
; Reproducibility of Results
; Sewage
; Sulfides
英文摘要: Water utilities worldwide spend annually billions of dollars to control sulfide-induced corrosion in sewers. Iron salts chemically oxidize and/or precipitate dissolved sulfide in sewage and are especially used in medium- and large-size sewers. Iron salt dosing rates are defined ad hoc, ignoring variation in sewage flows and sulfide levels. This often results in iron overdosing or poor sulfide control. Online dosing control can adjust the chemical dosing rates to current (and future) state of the sewer system, allowing high-precision, stable and cost-effective sulfide control. In this paper, we report a novel and robust online control strategy for the dosing of ferrous salt in sewers. The control considers the fluctuation of sewage flow, pH, sulfide levels and also the perturbation from rainfall. Sulfide production in the pipe is predicted using auto–regressive models (AR) based on current flow measurements, which in turn can be used to determine the dose of ferrous salt required for cost-effective sulfide control. Following comprehensive model-based assesment, the control was successfully validated and its effectiveness demonstrated in a 3-week field trial. The online control algorithm controlled sulfide below the target level (0.5 mg S/L) while reducing chemical dosing up to 30%. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112895
Appears in Collections: 气候减缓与适应
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作者单位: Advanced Water Management Centre, The University of Queensland, Building 60, Research Road, St. Lucia, Brisbane QLD 4072, Australia; Center for Microbial Ecology and Technology (CMET), Ghent University, Coupure Links 653, Ghent, 9000, Belgium; School of Automation Science & Engineering, South China University of Technology, Guangzhou, 510640, China; Sydney Water Corporation, 1 Smith St, Parramatta, NSW 2150, Australia
Recommended Citation:
Ganigué R.,Jiang G.,Liu Y.,et al. Improved sulfide mitigation in sewers through on-line control of ferrous salt dosing[J]. Water Research,2018-01-01,135