Integrating sequencing batch reactor with bio-electrochemical treatment for augmenting remediation efficiency of complex petrochemical wastewater

Bioresource Technology
Dileep Kumar YeruvaS Venkata Mohan

Abstract

The present study evaluates the sequential integration of two advanced biological treatment methods viz., sequencing batch reactor (SBR) and bioelectrochemical treatment systems (BET) for the treatment of real-field petrochemical wastewater (PCW). Initially two SBR reactors were operated in aerobic (SBR(Ae)) and anoxic (SBR(Ax)) microenvironments with an organic loading rate (OLR) of 9.68 kg COD/m(3)-day. Relatively, SBR(Ax) showed higher substrate degradation (3.34 kg COD/m(3)-day) compared to SBR(Ae) (2.9 kg COD/m(3)-day). To further improve treatment efficiency, the effluents from SBR process were fed to BET reactors. BET(Ax) depicted higher SDR (1.92 kg COD/m(3)-day) with simultaneous power generation (17.12 mW/m(2)) followed by BET(Ae) (1.80 kg COD/m(3)-day; 14.25 mW/m(2)). Integrating both the processes documented significant improvement in COD removal efficiency due to the flexibility of combining multiple microenvironments sequentially. Results were supported with GC-MS and FTIR, which confirmed the increment in biodegradability of wastewater.

References

Mar 10, 2000·Applied Microbiology and Biotechnology·C O'NeillS Wilcox
Dec 25, 2003·Bioresource Technology·Germán BuitrónGloria Moreno
Jul 16, 2005·Journal of Hazardous Materials·N Chandrasekhara RaoP N Sarma
Feb 5, 2008·Applied Microbiology and Biotechnology·Yujie FengHe Lee
Jul 1, 2008·Trends in Biotechnology·René A RozendalCees J N Buisman
Jul 25, 2008·Bioresource Technology·C A PapadimitriouG P Sakellaropoulos

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Citations

Feb 9, 2021·Bioresource Technology·J Shanthi SravanS Venkata Mohan
May 12, 2018·Bioresource Technology·Navanietha Krishnaraj RathinamRajesh K Sani
Feb 14, 2018·Bioresource Technology·Navanietha Krishnaraj RathinamDavid R Salem

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