A Condition Rating System for Wastewater Treatment Plants Infrastructures

Authors: Altayeb Qasem, Tarek Zayed, Zhi Chen

Abstract:

Statistics Canada stated that the wastewater treatment facilities in most provinces are aging and passes 63% of their useful life in 2007 the highest ratio among public infrastructure assets. Currently, there is no standard condition rating system for wastewater treatment plants that give a specific rating index that describe the physical integrity of different infrastructure elements in the treatment plant and its environmental performance. The main objective of this study is to develop a condition-rating index for wastewater treatment plants mainly activated sludge systems. The proposed WWTP CRI, is based on dividing the treatment plant into its three treatment phases; primary phase, secondary phase and the tertiary phase. The condition-rating index will reflect the infrastructures state for each phase, mainly tanks, pipes, blowers and pumps.

Keywords: Condition rating index, Wastewater treatment plants, AHP- MUAT.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1084664

References:

[1] ACSE, (2005). "Report Card for American Infrastructures", available on http://www.asce.org/reportcard/2005/index.cfm, surfed on April 2004.
[2] Al Barqawi H., (2006). "Condition rating models for underground infrastructure: Sustainable water mains". M.A.Sc., Concordia University, Montréal, Canada.
[3] Al-Barqawi, H., Zayed T., 2006. "Condition Rating Model for Underground Infrastructure Sustainable Water Mains". ASCE, Journal of Performance of Constructed Facilities, Vol. 20, No. 2, pp. 126-135.
[4] Best practice, (2003). "Best Practices for Utility-Based Data"- A best practice by National Guide to sustainable Municipal Infrastructure, Issue No 1.0, NRC Infra-guide publication.
[5] Elmisalami, T., E., (2001). "Developing a multi-attribute utility model for selecting information technologies in the construction industry". Ph.D. theses, Iowa State University.
[6] Keeney L., Raiffa H., (1993). "Decisions with multiple objectives: preferences and value tradeoffs". Cambridge University Press.
[7] Kleiner, Y. and Rajani, B. (2001). "comprehensive Review of structural deterioration of water mains: Physically based Models". NRCC-43722. Urban Water, Vol. 3. pp. 151 -164.
[8] Mychèle G., Valérie G. and Donald O. (2008). "Age of Public Infrastructure -A Provincial Perspective-, Statistics Canada Report - No. 11-621-MIE2008067.
[9] Saaty, T.,(1991). "Decision Making with Dependence and Feedback: The Analytic Network Process". Pittsburgh, PA, RWS Publications.
[10] Statistics Canada (2008), "The age of public infrastructure", available on http://www.statcan.gc.ca/daily-quotidien/080213/dq080213aeng. htm
[11] Urhaman F., (2007). "Integrated condition assessment models for sustainable sewer pipelines". M.A.Sc., Concordia University Montreal Canada.
[12] Vanier, D.J., and Rahman, S. (2004). MIIP Report: "Survey on Municipal Infrastructure Assets", .
[13] Zayed, T. and Halpin, D., (2005). "Pile Construction Productivity Assessment." ASCE Journal of Construction Engineering and Management, Vol. 131 (6), June 1, pp.705- 714.