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권호별목차 / 소장처보기

H : 소장처정보

T : 목차정보

大韓衛生學會誌 = The Korean journal of sanitation 9건

  1. [국내논문]   연속 회분식 반응기를 이용한 폐수처리에서 고정화 슬러지의 거동 특성  

    최석순 (용인공업전문대학 제지공업과)
    大韓衛生學會誌 = The Korean journal of sanitation v.11 no.2 ,pp. 1 - 7 , 1996 , 1225-8938 ,

    초록

    The behavior of total organic carbon (TOC) and phosphate were observed for 15 days with immobilized activated sludge using polyacrylamide (PAA) by sequencing batch reactor (SBR). In the preparation of immobilized sludge by PAA, it was found that suitable acrylamide concentration for actual wastewater treatment was to be 15% through the batch test. When SBR system was operated in the repeated aerobic and anaerobic conditions, TOC removal efficiency was 92%. The uptake rate of phosphate was increased from 1.78 mg-P/g cell/hr on the 5th day of acclimation to 2.5 mg-P/g cell/hr on the 15th day of acclimation. And the total phosphorus content in PAA bead was increased from 40 mg-P/g cell on the 1st day of operation to 55 mg-P/g cell on the 15th day of operation. From this study, lowering the volume of aeration tank was possible when PAA bead was used in wastewater treatment and long operation was also possible without the settler.

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  2. [국내논문]   umu-test에 의한 일부 배출시설별 폐수의 변이원성 조사연구  

    김영환 (고려대학교 보건전문대학 환경위생과 ) , 손종렬 (고려대학교 보건전문대학 환경위생과 ) , 문영환 (고려대학교 보건전문대학 환경위생과 ) , 배은상 (고려대학교 보건전문대학 환경위생과)
    大韓衛生學會誌 = The Korean journal of sanitation v.11 no.2 ,pp. 9 - 20 , 1996 , 1225-8938 ,

    초록

    Genotoxicity/mutagenicity of organic chemicals in industrial wastewater was investigated using umu-test with a Salmonella typhimurium TA1535 strain. The tester strain was derived by introducing plasmid pSK 1002, which carried a umu C - lac Z fusion gene into S typhimurium TA1535, and tester strain in the presence microsomal activation proved to be the more sensitive maker of genotoxicity. Genotoxic responses were observed in concentrated with a blue-rayon column, from 14 plants tested. The results were as follow; 1. Genotoxic responses were observed in concentrated from nine plants(64.3%) tested. 2. The results show that genotoxic activity was particulary high in the untreated wastewaters and decreased in the treated wastewaters(35.7%) 3. No significant correlation was found between genotoxicity and water ollution indicators, such as COD and BOD.

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  3. [국내논문]   납 중독 랫드의 말초신경내 myo-inositol 수송 체계에 관한 연구   피인용횟수: 1

    정명규 (선문대학교 환경공학과 ) , 조해용 (선문대학교 환경공학과)
    大韓衛生學會誌 = The Korean journal of sanitation v.11 no.2 ,pp. 21 - 26 , 1996 , 1225-8938 ,

    초록

    In our previous studies, we reported that lead intoxicated nerve cell by inhibition of the Na $^{+}$ -K $^{+}$ ATPase activity and reduction of myo-inositol in nerve cell. As the second series of experiments, in order to understand toxic mechanism of lead for nerve cell, the characteristics of myo-inositol transport system and the effect of lead on its system have been studied in the sciatic nerves of control and lead-treated rats. A lead intoxicated animal model was induced by feeding diet containing lead to Sprague-Dawley rat for two weeks. Four weeks aged Sprague-Dawley rats were divided into three group : normal control group, 10ppm-lead treated group, 100ppm-lead treated group. All rats were sacrified at the end of two weeks. The rate o myo-inositol transport by sciatic nerve isolated from lead-treated rat was significantly decreased compared with that of control rat. This deficit results from that myo-inositol transport system which is carrier mediated and sodium-potassium dependent was inhibited by the lead treatment (both 10ppm and 100ppm) due to increase of the Km value without affecting Vmax value for myo-inositol carrier. These observations suggest that the toxic mechanism of lead on nerve myo-inositol transport system might be a change of affinity without change of maximum transport velocity for carrier.

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  4. [국내논문]   혼합배양 미생물의 세포외 물질이 2,4,6-Trinitrotoluene 변환에 미치는 영향에 관한 연구  

    한기봉 (국립환경연구원)
    大韓衛生學會誌 = The Korean journal of sanitation v.11 no.2 ,pp. 27 - 31 , 1996 , 1225-8938 ,

    초록

    2,4,6-Trinitrotoluene(TNT) was reduced into intermediate products by mixed culture incubated in anaerobic condition. To test the effects of extracellular material to electron transfer between sulfide and TNT, filtered medium of mixed culture was loaded in the test tubes with TNT and sulfide. The transformation rate was measured under four different conditions. The rate under microbial activity was the fastest among under different conditions. With sulfide or filtrate alone and TNT, the reactions were measured as the slowest reactions or no reactions occured, respectively. The reaction rate coefficient were calculated by linear regression and the first order kinetic was fitted best. Also, the plot of rate coefficients (K $_{f}$ ) showed linear relationships when at time zero TNT and sulfide concentration were 20 mg/1 and 6.0 mM, respectively. By extrapolation, reaction rate coefficient of 100% filtrate could be calculated as 0.0054/minute. However, reaction rate was affected by different concentration of sulfide, so it is a dependent of sulfide concentration. The results of this test showed TNT reduction rate can be limited more by microbial reaction than by mediation of filtrate or sulfide and filtrate alone.

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  5. [국내논문]   초음파 조사에 의한 수중의 TCE, Benzene & 2,4 Dichlorophenol의 분해 특성  

    손종렬 (고려대학교 보건전문대학 ) , 모세영 (충북대학교)
    大韓衛生學會誌 = The Korean journal of sanitation v.11 no.2 ,pp. 33 - 41 , 1996 , 1225-8938 ,

    초록

    This study was performed to examine the factors influencing on the degradation of TCE, Benzene and 2,4 DCP in aqueous solution using ultrasonic irradiation. The TCE,Benzene and 2,4 DCP, which are hazard compounds causing environmental pollution, were not decomposable pollutants by convientional treatment. The results shows that the generation of H $_{2}$ O $_{2}$ , H $^{+}$ and OH $^{-}$ radical was formed by the oxidation and reduction reaction of ultrasound, and then theses decomposed the refractory pollutants of TCE, Benzene & 2,4 DCP in aqueous solution. we conformed that the ultrasonic irradiation was excellent in removal efficiency of the refractory pollutants any other than Advanced Oxidation Processes(AOP), utilized the treatment of organic compounds in the industrial wastewater. Consequently, these results suggest that ultrasonic irradiation may be extremely useful for the treatment of wastewaters contaminated organic pollutants, which is difficult to treat economically by conventional process.

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  6. [국내논문]   소규모 축산폐수 처리를 위한 RBC/AFBR공정의 Package화  

    임재명 (강원대학교 공과대학 환경공학과 ) , 권재혁 (삼척산업대학교 환경공학과 ) , 류재근 (국립환경연구원 수질연구부)
    大韓衛生學會誌 = The Korean journal of sanitation v.11 no.2 ,pp. 43 - 52 , 1996 , 1225-8938 ,

    초록

    Using rotating biological contactor(RBC) with artificial endogenous stage and aerobic fixed biofilm reactor(AFBR), organic material removal and biological nitrification of piggery wastewater has been studied at a pilot plant. RBC was operated in the endogenous phase at a interval of every 25 days. The concentration of COD, BOD and TKN in influent wastewater were from 2,940 to 3,800 mg/L, from 1,190 to 1,850 mg/L and from 486 to 754 mg/L respectively. The maximum active biomass content represented as VSS per unit aera was $2.0mg/cm$^{2}$ and biofilm dry density of $17mg/cm^{3}$ was observed at biofilm thickness of $900{\;}{\mu}m$ . It was observed that the pilot scale RBC/AFBR process exhibited 72 percentage to 93 percentage of BOD removal, In order to obtain more than 90 percentage of BOD removal, the organic loading rate to the RBC/AFBR process should be maintained less than $0.09{\;}m^{3}/m^{2}{\cdot}day(125.9g{;\}BOD/m^{3}{\cdot}d$ . The TKN removal efficiencies was from 45.5 to 90.9 percentage according to vary influent loading rate, It was estimated that the RBC/AFBR process consumed approximately 6.2 mg/L(as $CaCO_{3}$ ) of alkalinity per 1 mg/L of $NH_{3}$ -N oxidized as the nitrification took piace.

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  7. [국내논문]   염색폐수의 전해처리 방법에 관한 연구  

    전종남 (원광보건전문대학 환경공업과 ) , 김형수 (단국대학교 화학공학과 ) , 윤용수 (단국대학교 화학공학과 ) , 정일현 (단국대학교 화학공학과)
    大韓衛生學會誌 = The Korean journal of sanitation v.11 no.2 ,pp. 53 - 58 , 1996 , 1225-8938 ,

    초록

    This study was performed to measure and evaluate the characteristics of removal efficiency and kinetics in the electrolytic decolorizing process of dye wastewater containing acid dye Red 114 by using Fe anode. The synthetic wastewater samples of 500, 1000, $2000mg/{\ell}$ concentration were tested and as an attempt to assess the feasibility of the present system for the industrial application, a sample of wastewater collected by J textile factory in Eujungbu city was also treated. It was found that the optimum conditions were pH 7, 8Volt and removal efficiency in synthetic wastewater containing $2000mg/{\ell}$ of dye and 0.2% of electrolyte (NaCl) was 99.68% after 20minutes of reaction time. In this condition, overall rate constant was $4.77{\times}10^{-5}mmol/cm^{3}hr$ . The Decolorizing efficiency and COD removal efficiency of J textile factory wastewater were 99% and 86% respectively at pH 7, 8Volt for 40minutes of reaction time.

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  8. [국내논문]   유기성 폐수의 오존전해처리에 관한 연구  

    정홍기 (삼성정밀화학(주) ) , 이태호 (대구보건전문대학)
    大韓衛生學會誌 = The Korean journal of sanitation v.11 no.2 ,pp. 59 - 63 , 1996 , 1225-8938 ,

    초록

    To treat certain wastewater that has alcohol and phenol, we performed the ozone electrolysis by using the titanium electrode. In this experiment, we examined decomposition voltage of organics, time for electrolysis, and removal efficiency of organics. In addition we compared the ozone oxidation electrolysis. The followings are results; 1. When it comes to the alcohol treatment in wastewater, ozone electrolysis showed higher removal efficiency than ozone oxidation or electrolysis. 2. After comparing the decomposition rate of methylalcohol, ethylalcohol, and prophylalcohol in ozone electrolysis, we knew the fact that increasing carbon number made the decomposition rate slow. 3. According to the treatment of alcohol by ozone electrolysis, decomposition voltage was 50V, time for electrolysis was three hours, and treatment acidity was neutral (pH 6.5 - 8.1). 4. Ozone electrolysis was effective to the phenol treatment. When we treated phenol by using ozone electrolysis for three hours, TOC treatment efficiency was 95%. However, ozone oxidation just showed 45% treatment efficiency.

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  9. [국내논문]   마이크로파 가열에 의한 토양 유기오염물질 탈착특성  

    문경환 (서울시립대학교 화학공학과 ) , 김덕찬 (서울시립대학교 화학공학과)
    大韓衛生學會誌 = The Korean journal of sanitation v.11 no.2 ,pp. 65 - 73 , 1996 , 1225-8938 ,

    초록

    The objective of this study is to investigate the removal efficiency of volitile organic compounds in soil, and the mechanism of desorption by bench scale microwave heating, Silt soil used for experiment and was impregnated with toluene, tetrachloroethylene, o-xylene and p-dichlorobenzene and the microwave treatment was conducted in a modified domestic microwave oven : 2450MHz, 700W. According to the results of the research the removal efficiency was improved with increasing water contents and the soil temperature appeared to plateau period extending to 2-3minutes corresponds to the temperature a which steam distillation was expected. The value of removal rate constant (k) were calculated on dry and moisty silt soil, respectively, which showed linear with increasing microwave heating time. Therefore, addition of a certain amount of water to the contaminated soil can efficiently enhance the ability of the soil to absorb microwave energy and promote the evaporation of the volitile contaminants.

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