The present invention relates to a designing method of an improved biofilter, and, more specifically, to a designing method of a biofilter for a biofilter system consisting of microbial carrier filled beds, which comprises a microbial carrier filled bed separating step of separating microbial carrier filled beds from each other; and a waste gas flux supply step of dividing waste gas flux (Q) flowed in to the biofilter system, and supplying to each microbial carrier filled bed. The designing method of an improved biofilter reduces about 40-80% of pressure drop of traditional biofilters in the initial stage of operation or in a long term operation in a normal state by minimizing the pressure drop in a biofilter process, and uniformly distributes the microorganism population in a particulate active carbon carrier and in a waste tire carrier about 15 times and 2.5 times, respectively, than in traditional biofilters, thereby, reduces the driving cost necessary for the biofilter operation, and, improves the performance of the biofilter. Furthermore, pollutant loads included in waste gas to be processed are independently processed by dividing into each microbial carrier filled bed so that microorganisms are uniformly distributed in each microbial carrier filled bed at a detention time similar to the undivided biofilter, compared to the undivided biofilter. The pressure drop is drastically reduced, thereby, the pressure drop less affects the removal rate, and the residual pollutant destroy phenomenon is prevented when a fluctuating load is loaded. Therefore, the present invention is a useful invention having the advantage of continuously, efficiently and safely processing waste gas including bad smells and volatile organic compounds (VOC).;COPYRIGHT KIPO 2014
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