Abstract
The analysis and evaluation of the performance of sequential batch reactor (SBR) and moving bed biofilm reactor (MBBR) wastewater treatment technology operated under cold waste water conditions were done with the aim to investigate the nitrogen and phosphorous removal, sludge quality aspects and energy efficiency. Many wastewater treatment processes are temperature dependent. In some cases water temperature is below 25°C for most of the time. Moreover more stringent effluent requirements are expected to be implemented, as negative influence of nutrients becomes even more apparent. Therefore MBBR is preferred over SBR. MBBRs have significantly lower suspended solids production and hence the membrane is exposed to lower solids concentrations leading to reduced fouling potential. By comparison the MBBR technology does not require tertiary filtration and polymer addition to meet the standards for suspended solids and turbidity. Despite the potential benefits of the MBBR technology there has only been limited study of this configuration and more research is required to assess various operational conditions for this system in order to develop this process and increase its acceptance for wastewater treatment.
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