Reliability Performance Assessment of Wastewater Treatment Plants in Assessment of the Reliability Performance of WWTPs in West Azarbaijan

• Main Authors: Sayyad Bodaghi, mitra gholami, Mehdi Farzadkia, Ramin Nabizadeh
• Format: Article
• Language: English
• Published: Water and Wastewater Consulting Engineers Research Development 2015-05-01
• Series: آب و فاضلاب
• Subjects: Wastewater treatment plant; Reliability Performance; Aerated lagoons; Biolac; SBR; Coefficient of Reliability; West Azarbayejan
• Online Access: http://www.wwjournal.ir/article_7837_2080b1d817a1b91f8618a87e75f722d0.pdf

Performance of wastewater treatment plants (WWTPs) in Urmia, Khoy, Miandoab, Salmas, and Bookan were evaluated during the years 2008 to 2011 based on the reliability approach. The approach predicts the overall performance of WWTPs and their processes and, thereby, makes the screening of treatment technologies possible. The required BOD5, COD, and TSS data were collected using the records available at West Azerbayejan Water and Wastewater Company, local surveys, and interviews with operators. Statistical analysis was performed by SPSS. The valid Niku modeling was employed to calculate the Rmeasured , Revaluated, COR, and expected percentages of compliance with discharge standards and a significant relationship was found among these parameters. The results also showed the log normal distribution of effluent characteristics. Furthermore,SBR and biolac processes exhibited higher values of Rmeasured (90-100%), Revaluated (93-100%), and expected percentages of compliance with the discharge standards (95-99.97%) in all the WWTPs studied but lower values of COR (0.41-0.64) than those in aerated lagoons. The coefficients obtained in this study can, therefore, be used for the development and construction designs of similar systems.