The purpose of this study was to investigate the odor arising from the Cheong-ju industrial complex area for odor materials confirmation, and to predict the impact of the odor in the residential area using the CALPUFF Model. Among the odor causing substances in the area with a rising number of collective complaints due to odor, methyl sulfide, acetaldehyde, propionaldehyde, n-buthylaldehyde, n-valeraldehyde and styrene were detected. Odor causing substances detected in the area surrounding the industrial complex include ammonia, hydrogen sulfide, n-buthylaldehyde, toluene, xylene, benzene and styrene. Using the CALPUFF Model, it was predicted that 1hr average was 3.981~7.553 OU/m3 and 24hr average was 1.753~2.359 OU/m3. In terms of odor intensity, the predicted 1hr average was 0.6~0.9 and the 24hr average was 0.2~0.4.

In this study, a correlation analysis of odor was performed in order to assess the reliability and the field applicability of the Odorous gas sensor for continuous real-time monitoring. Hydrogen sulfide was found to have a correlation of 41.5~65.8%, and Ammonia is was found to have very low correlation in less than 200 ppb concentration. Reactivity evaluation result, hydrogen sulfide is the reactivity was higher than the low concentration condition of 100 ppb or less indicated by 31.3~36.4% in the 100 ppb or more high density condition based on the reference density value. For ammonia was very low reactivity in the low-concentration conditions below 200 ppb. TVOC and composite odor assessment did not occur Reactivity no reference concentration value, the specific comparison between both sensors showed a similar trend. In the same Odorous gas sensor accuracy between the result, 40.3~130.6% hydrogen sulfide, ammonia, 69.1~104.9%, TVOCs is 24.7~98.6%, exhibited human odor intensity from 5.5~33.2%.

During the aerobic composting of livestock excrement, or leachate, which is generated in the composting process, is distributed through a bulking agent. In this research, a specific microorganism expected to reduce the emission of odor was activated in livestock excrement supernatant, which is similar to the leachate used for water control. While the microorganism was being diffused, odor properties were examined. The bulking agent, in which the specific microorganism was activated, was produced by applying a bioreactor filled with pumice and pellets to the treatment process of livestock excrement activation sludge method. The dominant microorganisms were Pseudomonas genera. Experiment results showed ammonia content was lowered as to 0.27 ppm 1n 15 days; however, it remained at levels of 3.15 ppm in the control reactor. After the composting time was completed, the ammonia concentrations were 0.07 ppm and 3.43 ppm, respectively. The complex odor in the test reactor was 28~30 times greater than of dilution, but was 42~45 times greater in the control reactor. Hydrogen sulfide and methyl mercaptan were not detected in either reactors. Ammonia was thought to be the major odor-producing source during the aerobic composting process of livestock excrement, and it was expected that the odor could be reduced by spraying a microorganism -activated solution as a bulking agent.

The purpose of this study is to improve the ammonia (NH3) emission inventory estimation in the domestic CAPSS (Clean Air Policy Support System). Currently, the ammonia emissions rate is obtained by multiplying the activity (number of livestock) by emission factors. The amount of movement and treatment are not considered in the estimation of ammonia emission rates. However, livestock manure is currently moved and treated in accordance with the energy recycling policy. In this study, the new emission estimation method were suggested considering the moving and treatment characteristics of livestock manure. A new ammonia emissions was calculated for Bcity and Y-gun at Chungcheongnam-do province. It was shown that the moving and treatment ratio of ammonia emissions were 4.3% and 8.4%, respectively. Furthermore, this ratio would be increased rapidly with the continuous establishment of large-scale manure treatment facilities.

This study was conducted to evaluate the quality of indoor air and health-related parameters (allergic rhinoconjunctivitis) of subject of study (control group and sensitive group) in two schools. The schools were categorized into two groups of newly-built school and the school older than 5 years. Removal of indoor pollutant was investigated according to volume rates (0%, 1.5%, 3%) of indoor plants inside 3 classrooms respectively. The chemicals of indoor environmental research were PM10, Volatile organic compounds (toluene and benzene), formaldehyde, temperature and humidity. ARIA (Allergic rhinitis impacts on Asthma) test was used to assess health effect for 151 students. Also, The variation of SBS symptoms for students in classroom was measured by intervention. With increasing volume ratio of classrooms, there were positive and significant results between the indoor pollutant and student's health score. Students showed improvement health score during the period of putting indoor plants, which was facilitated by the placement of indoor plants at newly-built school classroom of indoor plants volume ratio 3%. From the results above, it could be tentatively effective newly-built school classroom of indoor plants volume ratio 3% improve indoor air quality and student's health score.

The objective of this study is to investigate the effect of ELF (Extremely Low Frequency) exposure on the health of elementary school students. A total of 103 students 12~13 years old were chosen for the study. The experimental group consisted of 56 students who went to school near an overhead powerline. The ELF exposure and environmental hazard factors were evaluated during a 24-hour exposure period. The body and dwelling characteristics of the students as well as disease occurrence related to the respiratory system and allergies were investigated through a questionnaire. The brain wave and electrocardiogram were also inspected. The exposure of the group exposed while at a school located near a powerline was 6.8 mG (p<0.01). Based on the questionnaire results, neither the body or dwelling characteristics of the two groups were affected by the ELF emitted from powerline. There was no significant difference between the two groups in relation to the rate of occurrence of respiratory diseases such as wheezing, asthma and bronchitis. Although brain waves of the group exposed to ELF were lower than that of the group not exposed to it in terms of absolute power of gamma and beta, there is no significant difference between the health status of the two groups. According to our study, school students who lived near a power line were exposed to higher ELF levels than those away from a power line. The two groups have significant differences inBrain wave and ECG, but this change doesn't mean there is a difference in health status. Finally, our study has a limitation in terms of the number of study subjects and the restricted area examined.