Similar articles

Abstract: Due to pollution in second water supply system (SWSS), nine renovation alternative plans were proposed and comprehensive evaluations of different plan based on analytical Hierarchy Process (AHP) were presented in this paper. Comparisons of advantages and disadvantages among the plans of SWSS renovations provided solid foundation for selecting the most appropriate plan for engineering projects. In addition, a mathematical model of the optimal combination of renovation plans has been set up and software Lingo was used to solve the model. As a case study, the paper analyzed 15 buildings in Tianjin City. After simulation of the SWSS renovation system, an optimal scheme was obtained, the result of which indicates that 10 out of those 15 buildings need be renovated in priority. The renovation plans selected for each building are the ones ranked higher in the comprehensive analysis. The analysis revealed that the optimal scheme, compared with two other randomly calculated ones, increased the percentage of service population by 19.6% and 13.6% respectively, which significantly improved social and economical benefits.

[1] Abrishamchi, A., Ebrahimian, A., Tajirishi, M., Mariño, M.A., 2005. Case study: application of multicriteria decision making to urban water supply. J. Water Resources Planning and Management, ASCE, 131(4):326-335.

[2] Al-Harbi, K.M., 2001. Application of the AHP in project management. International Journal of Project Management, 19(1):19-27.

[3] Dong, Z.S., 2006. Discussion on rebuilding of Guangzhou residential secondary water supply system. China Water and Wastewater, 22(14):16-18 (in Chinese).

[4] Liu, H.L., 2002. Remarks on the design of residential water supply. Housing Materials and Applications, 30(8):39-41 (in Chinese).

[5] Liu, T., Shao, D.G., Gu, W.Q., 2006. Risk comprehensive evaluation of water supply in middle and lower reaches of Hanjiang River after implementation of middle route of South-to-North Water Diversion. Engineering Journal of Wuhan University, 39(4):25-28.

[6] Lu, T.G., Yang, G.L., Fu, Q., Wang, L.K., 2003. Evaluation and analysis of the supply and demand of agricultural water resource in the Sanjiang Plain based on AHP. System Sciences and Comprehensive Studies in Agriculture, 19(1):53-55.

[7] Michaud, D., Apostolakis, G.E., 2006. Methodology for ranking the elements of water-supply networks. J. Infrastructure Systems, 12(4):230-242.

[8] Saaty, T.L., 1990. How to make a decision: The Analytic Hierarchy Process. European Journal of Operational Research, 48(1):9-26.

[9] Saaty, T.L., 1994. Highlights and critical points in theory and application of the Analytical Hierarchy Process. European Journal of Operational Research, 74(3):426-447.

[10] Saaty, T.L., 2000. Fundamentals of Decision Making and Priority Theory (2nd Ed.). RWS, Pittsburgh.

[11] Tang, B., Liu, S.Q., Zhang, J., 2003. Countermeasures against the secondary pollution of roof water tanks of multiple story residential building in Nanjing. Water and Wastewater, 29(3):38-40 (in Chinese).

[12] Wang, A.H., 2000. The evaluating methods of the rationality of water supply plans in residential district. China Water and Wastewater, 16(4):29-30 (in Chinese).

[13] Wang, J., 2006. Discussion on secondary water supply system. Shanxi Architecture, 128:25-27 (in Chinese).

[14] Wang, Y.S., Sun, P., 2005. A probe into the rationality of replacing water-supply plans with variable speed pumps. Water Field, 3:41-44 (in Chinese).