Odor emission is a severe problem common to most wastewater treatment operations. Economical advantages coupled with environmental benefits make the process of odor biofiltration an attractive option. However, there still exist inefficiencies pertaining to the media used in biofiltration processes, which at present, render the technology economically unattractive. This study aims to develop a novel active medium, termed as biological activated carbon, through bacteria immobilization on activated carbon, a supporting medium with generally high specific surface area. The findings of this research demonstrated that the combination of biodegradation and adsorption on Biological Activated Carbon is capable of removing Hydrogen Sulphide for a substantial period of time. A biotrickling filter using this new Biological Activated Carbon is a viable biotechnology for the efficient removal of Hydrogen Sulphide, the predominant odorous compound in sewage air. Studies on the mechanisms and modeling enable a better understanding to the biofiltration process applied in Hydrogen Sulphide removal using Biological Activated Carbon.
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