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최근주 ( Keun Joo Choi ),김상구 ( Sang Goo Kim ),노재순 ( Jae Soon Roh ),손희종 ( Hee Jong Son ),권기원 ( Ki Won Kwon ),신판세 ( Pan Se Shin ) 한국수처리학회 2004 한국수처리학회지 Vol.12 No.3
N/A We have studied removal efficiency of three endocrine disruptors (Amitrol, Nonylphenol, Bisphenol-A) by oxidation, coagulation and adsorption processes by activated carbon (including the used carbons). Ozonation and chlorination can oxidate nonylphenol, bisphenol-A and the more dose of powder activated carbon(PAC) the more removal efficiency. Coal Based carbon had more adsorption capacity of amitrol, nonylphenol and bisphenol-A than other two carbons on isotherm test, next was wood based carbon for nonylphenol, and coconut based carbon for bisphenol-A. Used coal and coconut based carbon had higher removal efficiency for amitrol than virgin carbon with service time. Three virgin carbons had 0-20% adsorption efficiency and the used carbons had 79-90% biodegradibility for amitrol. It was showing that hydrophilic material can be removed by biodegradation. The hydrophobic materials like as nonylphenol and bisphenol-A were effectively adsorbed onto all carbons tested in this study. The adsorption capacity reduced with the operation year, and the extent of the reduction was different depending upon the carbon type and the operation year. The adsorption parameters for nonylphenol and bisphenol-A provided by this study could be valuable when GAC adsorption was considered to handle an accidental spill of nonylphenol and bisphenol-A.
김상구(Sang Goo Kim),최근주(Keun Joo Choi),오형석(Hyeong Seok Oh),노재순(Jai Soon Noh),황영도(Young Do Hwang),박은주(Eun Ju Park),손희종(Hee Jong Son),신판세(Pan Se Shin) 한국수처리학회 2002 한국수처리학회지 Vol.10 No.3
N/A Coagulation and filtration are basic treatment processes in rapid filtration system. Good performance of coagulation process can produce high quality of filtered water which is lower turbidity and particles water. Many factors which effect to coagulation are introduced by many studies but these results of studies are almost impossible to adjust to constructed water treatment processes. Therefore optimum design is very important for producing required water quality. We have researched variations of filtered water quality by coagulation conditions after back wash with filtration time. The most effective factor for a good coagulation is coagulant dose however inject point of coagulant had no effect to producing good filtered water and the lower mixing energy produced good filtered water than higher mixing energy. The period of direct filter`s maturing after coagulant dose is within ten minutes, it will be good indicator for a good coagulant dose. Long time of only air scour did not need to detach floc from filter media because floc detaching occurred not air scour alone but high rate of up flow water by air pressure, after the water in the underdrain moved to the surface of filter by air pressure, the turburance of filter media is stopped. Longer air scour did not effected to media disturbing, so for more achieve effectiveness of air scour, reair scour should be carried out after refill the back wash water in the space of underdrain.
신판세,정장표 慶星大學校 1998 論文集 Vol.19 No.2
It is necessary to establish the reasonable management plans for controlling level of suspended particulate matter that source profile characterization for the suspended particulate matter are analyzed and identified. Therefore, in this study, emission inventory for the sources emitting particulate matter in Pusan area, was made and assessed through investigation and analysis and source profiles which are considered to be important information to identify the relationship between source and receptor, were developed and arranged through the comparison of related of related source profile data. From this study, the following conclusions were obtained. 1. The concentrations of TSP in Pusan were showed higher in winter and spring than in summer and autumn and the concentration and emission quantity of TSP had a close relationships. (r=0.7693) 2. The concentration of the emission quantity of TSP from the regions of Buk-Gu and Saha-Gu was dominant and calculated as 83% of total emission quantity of TSP in Pusan and the variation of that showed less than of the other regions. 3. The larger the fraction of area occupied by building and residential house was, the higher variation of TSP concentration showed. 4. In the fact that the fractions of Al, Si, K, and Ca were showed high, while that of Com Mo, and Cd were showed low, it was exist, and it was remarkable that high fraction of Cl was calculated in transportation source profile of Pusan. 5. From the results of developed source profiles for the selected point sources, it was obtained that the composition fractions of K, Na, and Ca were showed high while those of Co, Se, Mo and Ti were calculated low. And as the scale of emission facility goes larger, the composition fractions showed higher, especially this trend was showed more in alkali and alkaline-earth metals such as K, Mg, and Ca. 6. By the kind of vehicle, speed pattern and sampling place for the source profile of transportation, and used fuel, emission facility, the kind and the scale of industry for that of point sources, it was identified that the source profiles were different from each other. 7. The related study on source profile should be performed to get the reprehensive source profiles for the sources contributed to level of suspended particulate matter in Pusan.
2-Methylisoborneol(2-MIB)제거를 위한 산화 및 흡착공정의 특성
최근주,김상구,류동춘,신판세,손인식,오광중 한국환경과학회 2002 한국환경과학회지 Vol.11 No.3
One of the Musty and earthy smell compounds in raw water is generally attributed to 2-methylisoborneol (2-MIB). It is well known that activated carbon and oxidants such as O_3, ClO_2 are effective ways to control 2-MIB. In isotherm equilibrium experiments, 2-MIB in distilled water was much more adsorbed to the activated carbon(A/C) than raw water containing dissolved organic carbon (DOC). The Freundlich constants(k) of distilled water and raw water were 3.36 and 0.049, and 1/n values were 0.80 and 0.42, respectively. The 2-MIB residual rate were Y = e^(0.55_x)~ e^(-0.54_x) with Ozone(O_3) dose by 5 minutes contact time at the 241 and 353 ng/L initial concentrations. The 2-MIB residual rate were Y = e^(-0.32_X)~ e^(-0.35_X) with Chlorine dioxide(ClO_2) dose by 15 minutes contact time at the 89 and 249 ng/L initial concentrations. 2-MIB was decreased from 1911 ng/L to 569ng/L by post-ozonation(70%removal efficiency) and removal efficiencies of 2-MIB by the following 4 kinds Granular Activated Carbon(GAC) process such as coal base, coconut base, wood base and zeolite+carbon base were 95.8, 89.5, 88.4, and 93.7% respectively.