Reliability Analysis of Waste Stabilization Pond Under Iran’s Climate Conditions

Abstract

The present paper seeks to comprehensive view on reliability analysis of waste stabilization pond systems under Iran's climate condition in order to shed lights on their efficiency. For this, data on effluents from nineteen waste stabilization ponds treatment plants were collected. Having been determination of effluents statistical distribution in pond stabilization system using goodness of fit tests, data were analyzed and subsequently, coefficient of reliability for qualitative parameters BOD, COD and TSS were calculated. According to the results, a few treatment plants were found to provide reliable performance under operational conditions. The average design concentration of the above parameters in order to meets Iranian discharge standards for effluent discharge into surface water; irrigation and agriculture purpose were obtained. Finally, percent of expected compliance from stabilization ponds system if kept in the same conditions was determined.