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윤철종 ( Churl Jong Yun ),전용보 ( Yong Bo Jun ),배은영 ( Eun Young Bae ),김현실 ( Hyun Sil Kim ),황보봉형,김정아 ( Jeon Ga Kim ),서창동 ( Chang Dong Seo ),이정규 ( Jeong Kyu Lee ),손희종 ( Hee Jong Son ) 한국수처리학회 2013 한국수처리학회지 Vol.21 No.2
This study utilized the methodology of gross contamination management, and the control of inflows and outflows such as river water input and dam drain were used to accomplish the reduction of gross contamination in Hoedong (HD) Reservoir. We made four assumptions related with factors of inflows and outflows, and then the results of assumptions were compared with actual data of 2009. In the actual state that there were little availability of overflow at dam because of the structural safety of dam and the function of flood control, the influence of water input from Nakdong (ND) River was investigated to find out the negative effects. On the other hand, when the thermal stratification was formed from Aug. to Oct., dam drain could generate positive effects on the water quality in HD Reservoir. The best control conditions for inflows and outflows of HD Reservoir were to minimize the input of ND River water and to discharge selectively the low layer water of HD Reservoir as much as possible at the condition of stratification that water temp. of low layer is beyond 20℃. The continuous managements of gross contamination by the controlling of inflows and outflows were estimated to improve the water quality and reduce the pollution level at the sediments.
PAC 응집제 종류에 따른 조류가 포함된 상수원수의 부상분리효율 비교
박종원,민성기,이혜연,윤철종,이창한,Jong-Won Park,Seong-Kee Min,Hye-Yeon Lee,Churl-Jong Yun,Chang-Han Lee 한국환경과학회 2023 한국환경과학회지 Vol.32 No.5
This study used a batch DAF (dissolved air flotation) jar tester to evaluate the algae removal efficiency of alum and PAC coagulants during coagulation, flocculation, and flotation. Optimal coagulant dosages were 0.06 ~ 0.15 mL/L (12.0 ~ 26.0 mg Al/L,17%), 0.08 ~ 0.20 mL/L (10.0 ~ 24.0 mg Al/L, 12%), 0.25 ~ 0.30 mL/L (25.0 ~ 30.0 mg Al/L, 10%) for PAC, and 3.0 ~ 5.0 mL/L (81.0 ~ 135.0 mg Al/L, 2.7%) for alum. Turbidity of treated water was 1.0 ~ 2.0 NTU in optimal coagulation, flocculation, and flotation conditions for the four coagulants types. The amount of coagulant injected tended to decrease with increasing Al content in the coagulant, as follows : 17% PAC < 12% PAC < 10% PAC < 2.7% alum. Turbidity removal efficiencies were in the order of 12% PAC (93.6%) > 10% PAC (92.7%) > 17% PAC (91.3%) > 2.7% Alum (88.1%).
낙동강 상수원수 중 이취물질과 방선균 및 조류의 상관관계 연구
김정아(Jeong A Kim),김경아(Gyeong A Kim),윤철종(Churl Jong Yun),박홍기(Hong Gi Park),정은영(Eun Young Jung),차동진(Dong Jin Cha),최진택(Jin Taek Choi),손희종(Hee Jong Son) 大韓環境工學會 2013 대한환경공학회지 Vol.35 No.3
상수원수의 이취발생 원인 및 이취물질과 방선균의 상관관계 규명을 목적으로 물금과 매리 취수원수를 대상으로 이취물질은 2010년과 2011년 2월부터 11월까지, 방선균수 및 조류농도를 2011년 2월부터 11월까지 조사하였다. 이취물질(geosmin∥2-MIB)은 3월에 가장 높게 검출되었으며(물금: 12.5∥19.9 ng/L, 매리: 10.8∥17.0 ng/L), geosmin은 봄과 여름철(3, 8, 9월)에, 2-MIB는 겨울과 봄철(2, 3, 5월)에 주로 검출되었다. 방선균은 물금과 매리 취수원수에서 0~330 CFU/500 mL의 비교적 적은 수로 연중 분포하였으며 3월에 가장 높은 집락수를 나타내었다. 방선균이 높은 집락수를 나타낸 3월과 8월에는 이취물질 또한 증가하였으며, 3월 분리한 방선균의 배양액에서 geosmin과 2-MIB가 검출되었다. 방선균은 3월과 8월 이취발생 원인으로 확인되었으며, 이취물질과의 상관관계가 높은 것으로 나타났다. 9월 geosmin 농도 증가는 남조류인 Microcystis 발생과 관계가 높은 것으로 판단되었다. We have investigated the correlation between odorous compounds and actinomycetes in drinking water source of Nakdong River in 2011. Geosmin was mainly detected in the spring and summer seasons (Mar, Aug, and Sep) and 2-MIB was mainly detected in the winter and spring seasons (Feb, Mar and May). The odorous compounds concentrations were highest on March which also overlapped with the peak of actinomycetes, geosmin and 2-MIB were detected highly in the diluted culture solution of isolated actinomycetes strains from Nakdong River. For these reasons we could confirm that odorous compounds on March and August are closely related with actinomycetes. Meanwhile, geosmin increase on September supposed to relate with Microcystis.
윤철종,박정호,임찬섭,박승조 동아대학교 환경문제연구소 1997 硏究報告 Vol.20 No.2
This study was on the removal of silver ion containing photographic wastewater by BPBE cell. The experiments were performed at different voltage. electrolytic time and pH. When we inverstigated with silver removal efficiency, current efficiency and power efficiency at pH 4, 7, 9, thoese were indicatec most superior values in pH 9. And for the conditions of pH 9, l000mg-Ag/L, 3V, thoese were 93%. 40.4%, 0.54g-Ag/W .hr respectively.