Odor is a phenomenon that stimulates the sense of smell and is caused by the presence of particular chemical compounds in the atmosphere. The human olfactory system can detect thousands of different types of odors arising from chemical compounds that are present in the surrounding air. However, odor...
Odor is a phenomenon that stimulates the sense of smell and is caused by the presence of particular chemical compounds in the atmosphere. The human olfactory system can detect thousands of different types of odors arising from chemical compounds that are present in the surrounding air. However, odor perception by human olfactory is somewhat subjective, and this is the cause to make the odor measurement very difficulty. Recently, the odor complaints arise continuously in the area neighboring environmental facilities such as sewage treatment plant and industrial complex area, but it remains difficulty for the evaluation of current status sufficiently. In this study, the odor emission characteristics with unit process in a sewage treatment facility were investigated in terms of odorous compounds and odor unit concentration, which were evaluated by an instrumental analysis method and an indirect olfactory method, respectively. In addition, odor emission capacities were evaluated to reflect the odor emission characteristics of water body itself. Finally, odor emission velocities, which is the most essential factor to calculate the odor emission amount for EIA (environmental Impact assessment), were investigated using the odor sensing chamber system. The results, evaluated by the instrumental analysis method and the indirect olfactory method, showed the high odor concentration in the order of primary sedimentation basin, final sedimentation basin and air flotation thickener. The major odorous compounds were appeared to be sulfur compounds, such as hydrogen sulfide, methylmercaptan, methyl sulfide and methyl disulfide. Odor emission velocity with unit treatment processes were 2.00cm/sec for the primary sedimentation basin, 1.87cm/sec for the grit chamber and aeration tank, 1.39cm/sec for the final sedimentation basin, 1.36cm/sec for the air flotation thickener.
Odor is a phenomenon that stimulates the sense of smell and is caused by the presence of particular chemical compounds in the atmosphere. The human olfactory system can detect thousands of different types of odors arising from chemical compounds that are present in the surrounding air. However, odor perception by human olfactory is somewhat subjective, and this is the cause to make the odor measurement very difficulty. Recently, the odor complaints arise continuously in the area neighboring environmental facilities such as sewage treatment plant and industrial complex area, but it remains difficulty for the evaluation of current status sufficiently. In this study, the odor emission characteristics with unit process in a sewage treatment facility were investigated in terms of odorous compounds and odor unit concentration, which were evaluated by an instrumental analysis method and an indirect olfactory method, respectively. In addition, odor emission capacities were evaluated to reflect the odor emission characteristics of water body itself. Finally, odor emission velocities, which is the most essential factor to calculate the odor emission amount for EIA (environmental Impact assessment), were investigated using the odor sensing chamber system. The results, evaluated by the instrumental analysis method and the indirect olfactory method, showed the high odor concentration in the order of primary sedimentation basin, final sedimentation basin and air flotation thickener. The major odorous compounds were appeared to be sulfur compounds, such as hydrogen sulfide, methylmercaptan, methyl sulfide and methyl disulfide. Odor emission velocity with unit treatment processes were 2.00cm/sec for the primary sedimentation basin, 1.87cm/sec for the grit chamber and aeration tank, 1.39cm/sec for the final sedimentation basin, 1.36cm/sec for the air flotation thickener.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.