The Effect of Bioaugmentation Strategy on the SBR Performance Treating Reject Water and Municipal Wastewater under Various Temperature Conditions
Faculty of Environmental Engineering, Lublin University of Technology, Nadbystrzycka 40B, 20-618 Lublin, Poland
Faculty of Fundamentals of Technology, Lublin University of Technology, Nadbystrzycka 38, 20-618 Lublin, Poland
Joanna Szulżyk-Cieplak   

Lublin University of Technology, Faculty of Fundamentals of Technology, Nadbystrzycka 38, 20-618 Lublin, Poland
Data publikacji: 06-07-2021
J. Ecol. Eng. 2021; 22(7):46–56
In the present study, the effect of bioaugmentation strategy on the sequencing batch reactor (SBR) performance while treating reject water and municipal wastewater under various temperature conditions was examined. The experiment was performed in two lab-scale SBRs, each with the active volume of 8 L and operating at sludge retention time of 3 d. For bioaugmentation, a mixture of wild-living Bacteria and Archaea in a dose 0.25 mL was added to SBR A, while SBR B was a control one. Both reactors were fed with a mixture of wastewater and 13% v/v reject water. The study was divided into 5 phases, with different temperature range, each one lasted 14 d. The temperatures were investigated in 5°C increments, i.e. 20, 25, 30, 25 and 20°C.The obtained results indicated that in the bioaugmented reactor (SBR A), lower concentrations of NH4+ - N, TSS, NO2--N in effluent were found as compared to non-bioaugmented one (SBR B). In the case of NH4+ - N, regardless the temperature, the observed differences were statistically significant. Importantly, in both SBRs, the process was carried out in a stable way.