This study aims to investigate the design factor for introduction of a biocover process to reduce odor emission by determining and evaluating the performance of ceramic media for odor removal.
First, an analysis of material properties of the cerami...
This study aims to investigate the design factor for introduction of a biocover process to reduce odor emission by determining and evaluating the performance of ceramic media for odor removal.
First, an analysis of material properties of the ceramic media was carried out to evaluate its performance. Inorganic elements of ceramic media obtained by EDS analysis showed O(oxygen) was the highest proportion at 57.88 percent, followed by Si(silicon), Al(aluminum), and Na(sodium). At this point, through BET analysis, the specific surface area, the total pore volume and the mean pore diameter were checked to be 13.164 m2/g, 0.04409 cm3/g and 13.397 nm, respectively.
Second, the adsorbed amount and adsorption capacity for gaseous ammonia and toluene were determined in order to evaluate the performance of the ceramic media. Under the condition of gaseous ammonia, the average value of the adsorbed amount and adsorption capacity were calculated to be 14.2355 mg and 0.1015 mg NH3/g ceramic, respectively. Under the condition of gaseous toluene, the average value of the adsorbed amount and the adsorption capacity were calculated to be 10.9272 mg and 0.0781 mg Toluene/g ceramic, respectively.
Third, biological degradation capability for ammonia and toluene was determined through biological experiment in order to evaluate the performance of the ceramic media. Under gaseous ammonia condition, biological degradation capability was determined to be 13 g/m3·hr in Trickling biofilter and 6.5 g/m3·hr in Biofilter. Under the condition of toluene condition, biological degradation capability was determined to be 20 g/m3·hr in Trickling biofilter and 30 g/m3·hr in Biofilter.
In addition, after the adsorption and biological experiments, changes in the ceramic media were determined by analyzing the surface of the ceramic media. The analysis of the surface of the ceramic media by SEM after the adsorption and biological experiments showed that it was relatively rougher than the raw ceramic. The ceramic media that had undergone a biological experiment was observed to be rough due to the attachment and growth of microbes on the surface of media, and this was confirmed through the EDS analysis.
Components unidentified in the existing media were observed on the surface of media used in Trickling biofilter and Biofilter, and under the conditions of ammonia P(phosphorus) were observed in a biological experiment and under the conditions of toluene, C(carbon) were observed in a biological experiment
Low-concentration and high-volume odor is continuously generated although odor is carried out to odor management through odor control facilities in environmental foundational facilities such as raw waste and food waste composting facilities, sewage treatment facilities and excrements disposal facilities. Thus, This study aims to suggest introduction possibility of a bio-cover technology applying ceramic media to manage Low-concentration and high-volume odor generated by final outlet of environmental foundational facilities at low cost. the adsorption capacity and the attachment capacity of microbes, obtained in this study, can be used as basic data for future process design.