A Study on Sequential Batch Biofilm Reactor

With the introduction of the stringent standard by the pollution control board, it is our responsibility to treat the sewage to comply with the standards of receiving streams. We are aware of the suspended growth process like Activated Sludge Process (ASP) and Sequential Batch Reactor (SBR) and attached growth process like Moving Bed Biofilm Reactor (MBBR). Nowadays a new trend is developed to adopt the combination of suspended and attached growth process for wastewater treatment. In SBR, four processes fill, aeration, settling and decanting take place with certain retention time where microorganisms are present in suspended form. In MBBR, microorganism’s growth takes place on the PVC media in aeration tank and secondary settling takes place in another tank with certain retention time. So the present study will show the feasibility of a Sequential Bed Biofilm Reactor (SBBR) with a combined suspended and attached growth system for the treatment of domestic sewage. Compared with an SBR and MBBR, SBBR has many advantages, such as more biomass and higher removal efficiency, less sludge and sludge conglomeration, greater volumetric loads and increased process stability toward shock loadings. The main advantage of SBBR compared to SBR and MBBR is higher nutrient removal efficiency in the context of nitrogen and phosphorus removal. The study will show COD, TP, TKN and TSS parameters with different detention time and organic loading. Domestic sewage flowing through the SBBR will receive the extensive treatment with least consumption of energy.