Development of Cost Functions for Sewage Treatment Plants based on Conventional Activated Sludge Process

The objective of the study is to develop CFs to estimate cost of STPs in the planning stage to facilitate selection of technology for Sewage Treatment Plant (STP). The cost data for 30 existing STPs based on ASP technology, were collected, classified and updated to the base year of 2014 using the Co...

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Bibliographic Details
Published in:Indian journal of science and technology 2015-11, Vol.8 (30), p.1-1
Main Authors: Pannirselvam, R., Navaneetha Gopalakrishnan, A.
Format: Article
Language:English
Subjects:
Activated sludge process
Construction costs
Construction industry
Cost function
Graphs
Mathematical analysis
Sewage treatment
Upgrading
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Summary:The objective of the study is to develop CFs to estimate cost of STPs in the planning stage to facilitate selection of technology for Sewage Treatment Plant (STP). The cost data for 30 existing STPs based on ASP technology, were collected, classified and updated to the base year of 2014 using the Construction Cost Indices published by Construction Industry Development Council of India. The regression analysis was performed with unit cost versus capacity in Microsoft EXCEL graphs and the equation with determination coefficient closer to one was selected as the Cost Function (CF). For validating the developed CFs, costs were predicted using the developed CFs for small, medium and large capacities and compared with the actual costs of STPs, Absolute Percentage Error (APE) for each STP and the MAPE as the mean of APE values for the three groups of STPs were derived. Similarly the MAPE values by comparing the predicted costs of STPs using common CF for all capacities with the actual costs were determined.
ISSN:0974-6846
0974-5645
DOI:10.17485/ijst/2015/v8i1/76062