Fuzzy Network DEA Model for Urban Wastewater Treatment Plants
Subject Areas : International Journal of Data Envelopment Analysis
Mahboubeh Sadeghpour
1
,
Mohammad Fallah
2
1 - Department of Industrial Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran
2 - Department of Industrial Engineering, Central Tehran Branch, Islamic Azad University, Tehran, IRAN
Keywords: efficiency in three stage system, urban wastewater treatment, Data Envelopment Analysis, fuzzy data, discretion and non-discretion inputs,
Abstract :
Domestic wastewater treatment covers the processes that used to treat waters that have been polluted by commercial or anthropogenic activities prior to its discharge into the environment or its re-use. Data Envelopment Analysis was applied to evaluate six urban wastewater treatment plants efficiency in three stages with fuzzy data and discretionary and non- discretionary inputs in Iran. Stream flow, Chemical Oxygen Demand and Total Suspended Solids were considered as input variables. In this paper a fuzzy network Data Envelopment Analysis model is proposed and solved with GAMS software. Results showed that showed that Bandar Torkman has the best performance between these waste water treatment plants and Babol and yasreb waste water treatment plants do not operate well.