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생물학적 처리공정을 거친 돈사폐수의 영양염류 제거를 위한 Ducweed ( Lemna Species ) 의 이용 및 생장특성 ( 2 )
김병욱(Byoung Ug Kim),박미란(Mi Ran Park),임재명(Jay Myoung Rim) 한국물환경학회 2000 한국물환경학회지 Vol.16 No.5
This study aims to treat anaerobic digested effluent of high strength swine wastewater using duckweed as aquatic macrophyte and observe growth characteristics of duckweed according to variable influent loadings. Nutrient removal characteristics with influent loadings are as follows. In the case of nitrogen, removal efficiency was above 70 % and effluent concentration was below 10.0 ㎎/L when the influent ammonia loading was about 1.0gN/㎡/day. In the case of phosphorus, when the influent ortho phosphate loading was about 0.15gP/㎡/day, effluent concentration was below 2.0㎎/L and removal efficiency was above 55%. Also, crude protein and phosphorus content of duckweed biomass increased from 15.6% to 41.6% and from 0.8% to 1.6% with as increase of influent nutrient concentration, respectively. In general, duckweed could vegetate at high organic loadings as about 30 gTCOD/㎡/day, and organic removal rate was range of 30∼75% during operating periods.
피톤치드 기상서비스 예측 모델링 적용을 위한 발생특성 및 기상인자 조사
김병욱(Byoung-Ug Kim),현근우(Geun-Woo Hyun),최종한(Jong-Han Choi),홍영균(Young-Kyun Hong),이건호(Geon-Ho Yi),허인량(In-Ryang Huh),최승봉(Seung-Bong Choi) 한국환경보건학회 2020 한국환경보건학회지 Vol.46 No.6
Objectives: This study was performed to find phytoncide (monoterpene) emission characteristics and weather factors for application in prediction modeling for phytoncide weather services. Methods: From 2017 to 2019, one coniferous forest and one deciduous forest were selected to investigate the monthly emission characteristics and identify the correlation with weather factors. Research items were analyzed for 11 species known to be emitting the most monoterpenes. Results: Phytoncide (monoterpene) began to increase in April when trees were activated and continued to be released until November. The concentration range of monoterpene in deciduous forests was 0.0 to 427.4 ng/Sm3 and coniferous forests was 0.0 to 1,776.8 ng/Sm3. Phytoncide emission concentrations in deciduous forests were 20 to 90 percent of those in coniferous forests, and averaged 39 percent overall. The correlation between monoterpene and temperature was very close, with 0.835 for the broadleaf forest and 0.875 for the coniferous forest. Monoterpene and humidity were found to be 0.731 for the broadleaf forest and 0.681 for the coniferous forest, while wind speed showed a negative correlation of –0.482 and –0.424, respectively. Regression of temperature with phytoncide showed that the coefficient of determination (r2) was highly correlated with 0.75 for the broadleaf forest and 0.80 for the coniferous forest. Not only is phytoncide concentration affected by temperature, humidity, and wind speed, but also rainfall over the preceeding one to three days. Nearby rainfall on the day of sampling was found to have a direct effect on the physiological activities of the trees. Conclusions: Overall, if the values of monoterpene and temperature, humidity, and wind speed are used as basic factors, and rainfall from one to three days previous is replaced with complementary values, it is believed that the numerical analysis and modeling of daily and monthly phytoncide will be possible.
김병욱(Byoung-Ug Kim),홍영균(Young-Kyun Hong),이영섭(Yeong-Seob Lee),양승표(Seung-Pyo Yang),현근우(Geun-Woo Hyun),이건호(Geon-Ho Yi) 한국환경보건학회 2021 한국환경보건학회지 Vol.47 No.3
Objectives: This study was conducted to identify the emissions characteristics of total particulate matter (TPM), fine dust (PM₁₀, PM₂.₅), and gaseous pollutants (SOx, NOx) in iron and steel manufacturing facilities in order to investigate emissions factors suitable for domestic conditions. Methods: Total particulate matter (TPM), fine dust (PM₁₀, PM₂.₅), and gas phase materials were investigated at the outlet of electric arc furnace facilities using a cyclone sampling machine and a gas analyzer. Results: The concentrations of TPM ranged from 1.64 to 3.14 mg/Sm³ and the average was 2.47 mg/Sm³. Particulate matter 10 (PM₁₀) averaged 1.49 mg/Sm³ with a range of 0.92 to 1.99 mg/Sm³ , and the resulting ratio of PM₁₀ to TPM was around 60 percent. PM₂.₅/PM₁₀ ranged from 33.7 to 47.9% and averaged 41.6%. Sulfur oxides (SOx) were not detected, and nitrogen oxides (NOx) averaged 6.8 ppm in the range of 5.50 to 8.67 ppm. TPM emission coefficients per product output were in the range of 0.60 to 1.26 g/kg, 0.13 to 0.79 g/kg for PM₁₀ and 0.12 to 0.36 g/kg for PM₂.₅, and showed many differences from the emissions coefficients previously announced. An emissions coefficient for NOx is not currently included in the domestic notices, but the results were calculated to be 0.42 g/kg per product output. Conclusions: Investigation and research on emissions coefficients that can reflect the characteristics of various facilities in Korea should be conducted continuously, and the determination and application of unique emissions coefficients that are more suitable for domestic conditions are needed.
악취의 시공간적 발생 특성 및 분포도 분석 : 강원지역을 대상으로
김병욱(Byoung-Ug Kim),현근우(Geun-Woo Hyun),배선학(Sun-Hak Bae),홍영균(Young-Kyun Hong),이영섭(Yeong-Seob Lee),이건호(Geon-Ho Yi),허인량(In-Ryang Huh),최승봉(Seung-Bong Choi) 한국환경보건학회 2020 한국환경보건학회지 Vol.46 No.4
Objectives: This study is aimed at offering basic data for making plans for offensive odor management after researching offensive odor occurrence and characteristics in Gangwon Province. Methods: The data used in the study is based on offensive odor data analyzed by the Gangwon Institute of Health and Environment from 2012 to 2019. The data were reclassified by year, month, facility, and region to identify characteristics of occurrence. Finally, a distribution map of offensive odors was created using ArcGIS. Results: The highest monthly frequency of offensive odor occurrence falls in June, August, and July, and the summer season and third quarter are the highest. According to the latest eight-year data for Gangwon Province, complaints about offensive odors in county areas are more frequent than those in city areas. There are many offensive odor complaints in Wonju, Cheorwon, and Heongsung. The main offensive odor emission facilities are livestock and waste treatment (recycling) facilities. Complaints about offensive odors are relatively lower the Yeongdong area than Yeongseo area, which is considered to be the result of characteristics of land-sea breezes and geographical factors. Offensive odors from livestock facilities count for an average of 53.9% of the total, and the inadequacy rate of livestock facilities averages 36.9%. Conclusions: To maintain a clean environment in Gangwon Province, it is strongly recommended that an offensive odor reduction plan for livestock facilities be established. Areas with a high density of offensive odor occurrence should be identified and systematically managed with short- and mid-term measures. If offensive odors is managed using GIS, it is possible to identify the characteristics of occurrence by time and space and also by facility. In addition, since systematic data management is possible, it is believed that a rapid response to offensive odors, prediction of their spread, and efficient management are possible.
김승호(Kim Seung Ho),원철희(Won Chul Hee),김병욱(Kim Byoung Ug),임재명(Rim Jay Myoung) 강원대학교 산업기술연구소 2002 産業技術硏究 Vol.22 No.1
This research was performed to investigate the generation and physico-chemical characteristics of municipal solid wastes. The results were as follows: ⅰ) The generation rate and bulk density were 0.157 kg/cap/d and 147.8 g/L in residential zone, respectively. In non-residential zone, the generation and bulk density were 1.71 kg/cap/d and 85.6 g/L, respectively. Consequently, bulk density of non-residential zone was lower than that of residential zone. ⅱ) The wastes consisted of 90% of combustibles and 10% of incombustibles in residential zone. And the wastes from non-residential zone was composed 85% of combustibles and 15% of incombustibles. ⅲ) Water content was estimated at 47~50% in residential zone and restaurants. In non-residential zone, except restaurants, water content was in the range of 10~30%. Ash content was nearly 10% in overall zone.