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PCR법에 의한 박테리아의 동정 및 오존과 UV에 의한 제거 연구
오병수 ( O Byeong Su ),주설 ( Ju Seol ),김경숙 ( Kim Gyeong Sug ),강태희 ( Kang Tae Hui ),이지영 ( Lee Ji Yeong ),이혜영 ( Lee Hye Yeong ),강준원 ( Kang Jun Won ) 한국물환경학회 2004 한국물환경학회지 Vol.20 No.2
The purpose of this study was to monitor bacteria present in raw water and to investigate the effect of ozone, UV and combined ozone/UV processes for inactivating bacteria. Both polymerase chain reaction (PCR)-fragment length polymorphic analysis (PRA) and PCR-sequence analysis (PSA) were applied for the simultaneous analysis of numerous bacteria species present in each tested water, such as drinking water (DRW), drinking water source (DRWS) and sewage effluent water (SEW). According to the result, the number of detected bacteria species was zero in DRW, 58 in DRWS and 13 in SEW. After treatment of the each process, the ozone/UV process was the most successful for inactivating almost all bacteria. However, it was found that Flavobacterium sp., Pseudomonas sp. and Beta proteobacterium sp. had strong resistant to all tested processes, requiring further detailed study.
염소주입량과 반응시간에 따른 HAAs 생성과 고도산화처리에 의한 전구물질 제거 영향
김경숙 ( Kim Gyeong Sug ),오병수 ( O Byeong Su ),주설 ( Ju Seol ),강준원 ( Kang Jun Won ) 한국물환경학회 2004 한국물환경학회지 Vol.20 No.2
This study investigated the effect of chlorine dose and chlorine reaction time for the formation of haloacetic acids (HAAs). According to the results, HAA formation was highly affected by chlorine dose and chlorine reaction time. HAA formation reached a plateau value at 30 ㎎/L of chlorine dose and 24 hr of chlorine reaction time. For the speciation of formed HAAs in the test water, the concentration of brominated-HAAs was significantly lower than that of chlorinated-HAAs because of low level of bromide ion concentration in the test water. It also investigated the removal efficiency of HAA precursors by several unit processes, such as ozone alone, UV alone, and combined ozone/UV system. Of them, ozone/UV system was proved as the best process to control the HAAs formation. The increase of the brominated-HAAs was observed during ozonation with and without UV irradiation showing the slight increase of total HAA concentrations.
경안천내 미량유해물질의 모니터링 및 고도산화처리에 의한 제거효율 평가
김경숙 ( Kim Gyeong Sug ),오병수 ( O Byeong Su ),주설 ( Ju Seol ),정봉철 ( Jeong Bong Cheol ),안규홍 ( An Gyu Hong ),강준원 ( Kang Jun Won ) 한국물환경학회 2003 한국물환경학회지 Vol.19 No.5
This study illustrates the analytical results of micropollutants in Kyung-an of Pal-dang reservoir. Sampling was performed 7 times form Aug. 2000 to Oct. 2002. The analytical method used in this study enables us to detect about 300 kinds of chemicals commonly found in surface water at ppt level by GC/MS. This investigation was focused on pesticides and phthalates of micropollutants present in Kyug-an stream. Regarding analytical results, 2∼9 kinds of pesticides and 6∼7 kinds of phthalates were detected and their total concentrations were 0.2∼3.6㎍/L and 3.1∼9.1㎍/L, respectively. Pesticides (isoprothiolane, molinate and flutolanil) and phthalates(dimethyl phthalate, diisobutyl phthalate, dibuthyl phthalate and buthyl benzyl phthalate) were selected for target compounds to evaluate the removal efficiency of three treatment processes (ozone, UV, and ozone/UV process). Of applied processes, Ozone/UV process showed the highest removal efficiency for all target compounds. UV process was also reasonable for eliminating pesticides and phthalates beside dimethyl phthalate. Ozone process was effective for pesticides oxidation but not for phthalates.