Simultaneous Removal of Organic Matter and Nutrients from High Strength Organic Wastewater Using Sequencing Batch Reactor (SBR)

Industrial wastewater discharges often contain high levels of organic matter and nutrients, which can lead to eutrophication constitute a serious hazard receiving waters aquatic life. The purpose this study was examine the efficacy using sequencing batch reactor (SBR) treat high-strength for removal both chemical oxygen demand (COD) nutrients (nitrogen phosphorus). At constant COD concentration approximately 1000 mg/L, effects cycle time (3 9 h) various C:N:P ratios (100:5:2, 100:5:1, 100:10:1, 100:10:2) were investigated four identical SBRs (R1, R2, R3, R4). According experimental data, significant removal, i.e., 90%, 98.5%, 84.8%, observed COD, NH3-N, PO43−-P, respectively, when at 3 h. Additionally, increased h, highest (95.7%), NH3-N (99.6%), PO43−-P (90.31%) accomplished. Also, in order comprehend primary impacts interactions among process variables, data statistically examined analysis variance (ANOVA) 95% confidence level, revealed that interaction C/N ratio, C/P ratio is removal. However, same found be insignificant Sludge volume index (SVI30 SVI10) sludge settleability studied, best settling R3 with SVI30 55 mL/g after Further evidence flocs present reactors came from an average SVI 30/SVI 10 = 0.70 h 0.60