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하수처리시설에서 공정별 황화수소와 복합악취 발생 특성 및 상관분석
이길수 ( Kilsoo Lee ),한상집 ( Sangzib Han ),나경주 ( Kyeong-ju Na ),이채영 ( Chaeyoung Lee ) 한국수처리학회 2021 한국수처리학회지 Vol.29 No.6
Although sewage treatment plants play an important role in water purification, odors from the facilities are frequently a source of complaints, eliciting objections from both plant workers and neighbors. Hydrogen sulfide is a natural by-product of anaerobic digestion that has a strong, unpleasant odor. Therefore, many researchers in Korea have attempted to characterize odors emitted by sewage treatment plants in odor to reduce their emissions. However, these researches have primarily focused on odor intensity scales or the measurement of odor compounds in several sites without considering detailed information of the statistical analysis. In this study, using 75th percentile of unit processes as the complex odor, the operations connected with sludge thickening were discovered to be the main emission sources of odorous substances, followed by primary settling, equalization, anaerobic, dewatering, anoxic, preliminary treatment, and aerobic processes. These results will be aid in identifying major odor sources associated with sewage treatment processes and prioritizing an odor control plan. In this study, the possibility of predict complex odor from hydrogen sulfide concentrations was considered when performing correlation and regression analysis. It could be used to define the requirements for installing odor eliminators and establishing odor regulations in sewage treatment plants.
대유행 인플루엔자(H1N1 2009) 급성호흡곤란증후군에 대한 체외막 산소화 장치의 조기적용 1예
이경학,이길수,오원섭,유숙원,천성빈,이승준 대한감염학회 2010 감염과 화학요법 Vol.42 No.2
Despite advanced technologies in intensive care, pandemic influenza (H1N1 2009) can rapidly progress to acute respiratory distress syndrome (ARDS) and cause death in a small subset of patients. Extracorporeal membrane oxygenation (ECMO) is expected to provide adequate gas exchange, to reduce ventilator-induced lung injury and, eventually, to improve outcome in these patients. A previously healthy, young female received mechanically ventilatory support because of rapidly progressive respiratory failure caused by 2009 H1N1 influenza. As she failed to respond to high ventilatory support, ECMO was instituted at 6 hours after admission. We describe detailed course of case and literature review on ECMO, helping physicians make a decision to initiate ECMO in patients with influenza-related ARDS.