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한국수처리학회(구 한국수처리기술연구회)> 한국수처리학회지> 크리깅기법을 이용한 지하수위 분포추정

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크리깅기법을 이용한 지하수위 분포추정

Comparative Studies of Kriging Methods for Estimation of Groundwater Level Distribution

오영훈 ( Young-hun Oh ) , 박동일 ( Dong-il Park ) , 고병련 ( Byoung-ryoun Koh )
  • : 한국수처리학회(구 한국수처리기술연구회)
  • : 한국수처리학회지 24권6호
  • : 연속간행물
  • : 2016년 12월
  • : 137-148(12pages)

DOI

http://dx.doi.org/10.17640/KSWST.2016.24.6.137


목차

1. 서 론
2. 연구 이론
3. 연구 대상지역 선정
4. 베리오그램 및 크리깅기법 적용
5. 추정결과에 따른 지하수위 분포
6. 결 론
사 사
References

키워드 보기


초록 보기


						
Groundwater level distribution in Jeju north basin was analyzed with kriging methods. By using various kriging methods such as ordinary kriging, simple kriging, universal kriging, and co-kriging, the optimal groundwater level distribution in the study area was estimated. Before applying the kriging methods, a model with the lowest error in correlation analysis was selected with variogram, and as a result of the analysis, it was found that a Gaussian model showed the highest confidence level. By using the Gaussian model in the co-kriging with the highest overall error and confidence level, the groundwater distribution in 2015 was estimated. The result showed that there was no significant difference between the entire groundwater distribution and the monthly distribution, though there were some month-by-month difference in groundwater level around coastal lowlands. It was determined that in some local areas with high elevation such as the study area, the groundwater levels are also high. Based on the result, it was judged that the data would be utilized as basic materials in groundwater hydrographic modeling and groundwater analysis in the study area.Groundwater level distribution in study area was analyzed with kriging methods. By using various kriging methods such as ordinary kriging, simple kriging, universal kriging, and co-kriging, the optimal groundwater level distribution in the study area, was estimated. Before applying the kriging methods, a model with the lowest error in correlation analysis was selected with variogram, and as a result of the analysis, it was found that a Gaussian model showed the highest confidence level. By applying the Gaussian model to each kriging method, the interpretation of groundwater distribution was carried out.

UCI(KEPA)

I410-ECN-0102-2018-500-000519808

간행물정보

  • : 공학분야  > 환경공학
  • : KCI 등재
  • : -
  • : 격월
  • : 1225-7192
  • : 2289-0076
  • : 학술지
  • : 연속간행물
  • : 1993-2019
  • : 1267


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1생물학적 재생기법이 적용된 제올라이트계 여재의 저농도 암모니아성 질소 처리

저자 : 김진수 ( Jin-su Kim ) , 이지영 ( Ji-young Lee ) , 김수진 ( Su-jin Kim ) , 강민구 ( Min-koo Kang ) , 박종택 ( Jong-taek Park ) , 양창환 ( Chang-hwan Yang ) , 이상일 ( Sang-ill Lee )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 24권 6호 발행 연도 : 2016 페이지 : pp. 3-11 (9 pages)

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This study was conducted to removal of low ammonia nitrogen. ball-type zeolites were used to adsorb ammonia nitrogen and regenerated simultaneously by attached nitrifiers. Prior to main experiment, adsorption rate and amount of adsorption was confirmed by pseudo second-order kinetic model and Freundlich, Langmuir isotherm models. Comparison of normal ball-type zeolite and nitrifiers-attached ball-type zeolite were proceeded in order to evaluate for nitrification(biological regeneration). And continuous operating experiment was operated in 1.6 L reactor at empty bed contact time(EBCT) 25 minute to check the possibility of continuous operation. In the result of experiment, only nitrifiers-attached ball-type zeolite was occurred nitrification(biological regeneration). And continuous operating experiment result during 32 days, it could constantly adsorbed the ammonia nitrogen during operating time.

2Methylobacter와 Methylophilus 미생물 컨소시움에 의한 호기성 탈질 및 PAH(Polycyclic Aromatic Hydrocarbon) 분해

저자 : 김이태 ( I Tae Kim )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 24권 6호 발행 연도 : 2016 페이지 : pp. 13-27 (15 pages)

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Marine methanotrophs, Methylobacter marinus could be first cultured and grown in no-salt medium. Here, we examined the synergistic effects of a microbial consortium composed of Methylobacter (42%) and Methylophilus (43%) genera (Methylobacter marinus, Methylophilusflavus, and Methylophilusrhizosphaerae) in simultaneous aerobic denitrification and biodegradation of polycyclic aromatic hydrocarbons (PAHs) using the interactions among different species. We confirmed that the Methylobacter and Methylophilus consortium increased the efficiency of aerobic denitrification and biodegradation of PAHs. Methane monooxygenase (MMO) induced the most potent cometabolism in the PAH oxidation chain by methanotrophs via this mechanism, and dehydrogenation by methanol dehydrogenase (MDH), formaldehyde dehydrogenase (FADH), and formate dehydrogenase (FDH) was thought to promote the codegradation of anthracene and phenanthrene. These data confirmed the synergistic effects of coexistence of Methylophilus species, which are dependent on methanol, and Methylobacter species, which produce methanol, in the biodegradation of anthracene and phenanthrene.

3페록손공정에서 수온변화 및 NaOH 주입에 따른 지오스민 및 2-MIB 제거특성 연구

저자 : 신성훈 ( Sung-hoon Shin ) , 조용철 ( Yong-chul Cho ) , 정종태 ( Jong-tai Jung )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 24권 6호 발행 연도 : 2016 페이지 : pp. 29-39 (11 pages)

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We examined the removal efficiency of Geosmin and 2-MIB by Peroxone Process according to water temperature and NaOH concentration. It was found that under the same condition of water temperature, injection of O3 and H2O2 was higher efficient rather than injection of only O3. In addition, It was also found that as mole ratio of H2O2/O3 was getting higher, the removal efficiency was getting higher overall. But having to compare with 5℃ and 15℃ temperature, it was evident that the initial reaction rate was much slower at low temperature 5℃ with much lower efficiency. Based on a 7min(contact time) under 5℃, Geosmin and 2-MIB showed a mole ratio of 1.0 while showing a staggering 50% removal rate from 0.75 mole ratio under 15℃. For well-over 15 minutes, the removal rate went down from 50% to 27% and 20% in Geosmin and 2-MIB, respectively. As NaOH was injected to ramp up efficiency under low temperature, the processing efficiency for Geosmin and 2-MIB went up significantly. It is apparent that the efficiency was more pronounced when handled under increased NaOH injections in 5℃ than in 15℃. This directly translates into a conclusion that processing via NaOH was more efficient under low temperature 5℃ than 15℃. As in the case for pH, it was found that akaline substance reacted faster than acidic/neutral ones whereas the pace was far slower in pH 11 including not only reaction time but also processing efficiency.

4개질한 점토광물을 이용한 호소의 영양염류 및 녹조 제거

저자 : 최희정 ( Hee-jeong Choi )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 24권 6호 발행 연도 : 2016 페이지 : pp. 41-51 (11 pages)

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The aim of this study was to investigate the nutrient and algae removal using methyl-esterified sericite (ME-sericite) adsorbent in the aqueous solution. ME-sericite adsorbent removed successfully 90-98% of the nutrient in the aqueous solution at the following optimal parameters: Temperature 25 °C, pH 7-9, mixing time 60 min, ME-sericite dosage 3 g/L. These results indicated that a adsorbent, ME-sericite, can be a promising adsorbent due to its high efficiency and low dose requirements. Moreover, the relationship between TP and Chl-a was highest obtained 0.9926. This means that the TP has more influenced algae bloom than that of TN. ME-sericite can effectively used both nutrient and algae removal. In addition, ME-sericite does not contaminate treated water, which can be recycled to reduce not only the cost and the demand for water but also the extra operational costs for reusing water.

5전기응집을 이용한 하수처리장 처리수 재이용 연구

저자 : 이지영 ( Ji-young Lee ) , 김수진 ( Su-jin Kim ) , 김진수 ( Jin-su Kim ) , 강민구 ( Min-koo Kang ) , 이상일 ( Sang-ill Lee )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 24권 6호 발행 연도 : 2016 페이지 : pp. 53-63 (11 pages)

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This study evaluated usefulness of reclaimed water that was treated by using electro-coagulation. Electro-coagulation was more economical than other treatments because it is not almost affected by season, temperature and pH. This research confirmed removal efficiency by various factors of electro-coagulation. In this study, investigated factors were current, electrodes gap, reaction time, electrode area, rapid mixing speed, slow mixing speed and slow mixing time. We identified optimum condition of the factors through jar-test. It was that current is 2A, electrodes gap is 0.3cm, reaction time(HRT) is 5min, electrode area is 55.76㎠, rapid mixing speed is 100rpm, slow mixing speed is 5rpm and slow mixing time is 20min. When the electro-coagulation by the optimum conditions, the turbidity removal efficiency was 44.03%, T-P removal efficiency was 98.5%, PO4-P removal efficiency was 100% and CODcr removal efficiency was 44.79%. After electro-coagulation, treated water was filtered to remove precipitate. In case of flow rate, 3.4mL/s was appropriate because the speed was too fast to rise turbidity. After filtration, turbidity removal efficiency was 89.7%, T-P and PO4-P removal efficiency were 100% and CODcr removal efficiency was 62.6%. Therefore, the turbidity of the final treated water was 0.42NTU, the concentration of T-P and PO4-P was 0mg/L, CODcr 19.82mg/L, pH 7.76 and possibly can be reused.

6나노여과를 이용한 지하수의 미네랄 제어 특성 및 공정 모델링

저자 : 유현욱 ( Hyunwook Ryu ) , 김수한 ( Suhan Kim ) , 김재범 ( Jaebum Kim ) , 박성혁 ( Sung Hyuk Park )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 24권 6호 발행 연도 : 2016 페이지 : pp. 65-73 (9 pages)

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This study was motivated to produce healthful and good-tasting water using Jeju groundwater which contains useful mineral ions. The K-index was applied to assess the quality of treated water. The original value of K-index of raw groundwater was -13.3 and nano-filtration process was applied to increase it up to 2.0 with high recovery ratio. The process was tested while circulating the concentrate to a raw water tank for the purpose of increasing mineral concentrations such as calcium, magnesium and vanadium. Among four kinds of membranes tested with different pressure conditions, the membrane with the lower salt rejection ratio at lower pressure condition was favourable for that purpose. The recovery ratio of produced water increased up to 87.5% while circulating the concentrate and water qualities were analyzed at several recovery ratio points. And a mathematical model was used to simulate the higher recovery conditions and then water qualities. When a NE4040-40 membrane was used at 2 bar of pressure, ion concentrations of the concentrate water were calculated by the model. When the system reached 99% recovery, the concentrated water was 20 times diluted with pure water. Then the K-index value reached 2.0 applying the dilution factor.

7고도산화-응집공정에 의한 복합도금폐수의 고농도유기물 및 중금속 제거

저자 : 김종수 ( Jong-su Kim ) , 윤조희 ( Cho-hee Yoon )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 24권 6호 발행 연도 : 2016 페이지 : pp. 75-84 (10 pages)

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Recently plating industry has a tendency to introduce a composite plating process to help reduce costs and simplify metal plating process. However, the treatability of a composite plating wastewater containing complexed heavy metals as nickel and zinc by conventional coagulation process has a limit. Therefore, the study focused on the effect of operation parameters on each system treatability performance in terms of nickel and zinc and organics, and then is to research the optimum process. The proposed processes were experimentally investigated in a combined system of the lab-scale advanced oxidation processes(AOPs) as Fenton or Fenton-like and Electrolysis-Fenton/Fenton-like with coagulation. The results indicated that all proposed processes in this study could be almost removed Zn completely and an electro-Fenton process with hydroxide precipitation was the best among these processes. In the field wastewater test of that process, a value of obtained results was observed with Ni 48.2mg/L to 10.3mg/L, Zn 126.7mg/L to 0.6mg/L, and CODMn is shown to be reduced from 2560mg/L to 230.4mg/L. The optimum operating condition for the electro-Fenton process was as follows; the electrolysis reaction time 10min, an applied current density of 3.74mA/cm2 at bipolar type reactor packed by granular activated carbon(GAC) and Fenton`s reaction time 60min at the initial pH 5.0 and Fe(II)/H2O2 20mM/600mM.

8Ti/Ir 전극을 이용한 절삭유의 CODCr 제거에 관한 연구

저자 : 정영빈 ( Young-been Jeong ) , 장성호 ( Seong-ho Jang ) , 양승빈 ( Seung-bin Yang ) , 김고은 ( Go-eun Kim ) , 서정민 ( Jeong-min Suh ) , 송영채 ( Young-chae Song ) , 정병길 ( Byung-gil Jung )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 24권 6호 발행 연도 : 2016 페이지 : pp. 85-92 (8 pages)

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An electrochemical treatment has a great efficiency in removal of non-biodegradable material and it has high applicability in wastewater treatment due to a short operating time. Insoluble electrode used in electrochemical water treatment process is mainly manufactured through the platinum metal oxide coating process on the Ti substrate. The purpose of this study using electrochemical treatment with Ti/Ir(Titanium/Iridium) electrode is to provide fundamental data of Soluble Cutting Fluids treatment in CODCr. The result as follows. Experimental data in relation to applied voltage and concentration of NaCl are outlined. Under the condition of no addition of NaCl, changing on applied voltage as 15 V, 20 V, 25 V for 60 mins, the removal rates of CODCr were 57.14%, 75.71% and 71.43%(40 mins) for each voltage. The removal rates of CODCr increased with increasing the applied voltage and these experimental results show that removal rate of CODCr at the each concentration of NaCl increased with increasing the concentration of NaCl.

9Struvite 결정화 반응을 이용한 침출수 내 고농도 암모니아성 질소의 처리 특성

저자 : 김수진 ( Su-jin Kim ) , 김진수 ( Jin-su Kim ) , 이지영 ( Ji-young Lee ) , 강민구 ( Min-koo Kang ) , 이상일 ( Sang-ill Lee )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 24권 6호 발행 연도 : 2016 페이지 : pp. 93-101 (9 pages)

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This study was focused on the removal of high concentration ammonia nitrogen in landfill leachate by using struvite crystallization. Struvite crystallization showed high removal efficiency of ammonia nitrogen and phosphate in landfill leachate. Therefore, this study was evaluated to optimum conditions by pH, mole ratio, dosage of seed, velocity gradient and mixing time. In the result, the optimum condition was at pH 9.0, Mg2+ : PO4 3- : NH4 + = 1.5 : 1.5 : 1.0. When seed was injected at landfill leachate, the removal efficiency of injecting wet seed was higher than injecting dry seed. However, It was concluded that the mixing time and the velocity gradient were not significant factor on the struvite crystallization.

10하천 녹조제거를 위한 천연재료 응집제 적용성 연구

저자 : 남숙현 ( Sook-hyun Nam ) , 구재욱 ( Jae-wuk Koo ) , 김은주 ( Eun-ju Kim ) , 박재로 ( Jae-ro Park ) , 전숙례 ( Sook Lye Jeon ) , 박주현 ( Joo Hyun Park ) , 문병진 ( Byeong-cheon Mun ) , 황태문 ( Tae-mun Hwang )

발행기관 : 한국수처리학회(구 한국수처리기술연구회) 간행물 : 한국수처리학회지 24권 6호 발행 연도 : 2016 페이지 : pp. 103-113 (11 pages)

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This study was carried out to investigate the coagulation performance of some natural and synthetic material to remove chlorophyll-a and suspended particles in water. This natural coagulant is made of vegetable substances and plant-mineral composites. The removal of chlorophyll-a and suspended particles as a function of time, dose and initial concentration are tested. The natural coagulant dosage is determined with jar tester method. Samples in this study are mixed with water with high contamination of several algae species. The chlorophyll-a removal rate was 98 % and BGA removal rate was 100 % in water with low concentration of chlorophyll-a(sample A). The chlorophyll-a removal rate was 86 % and BGA removal rate was 76 % in water with high concentration of chlorophyll-a(sample C). It could also improve particulate and organic matter removal efficiency, indicating that it was highly effective as the coagulant agent. Also, an optimal dosage of coagulant on sample C becomes 2 times to 3 times larger than sample A. The fluorescence spectroscopy method using EEM showed that the peak of phycocyanin and Chlorophyll-a was simultaneously removed after the coagulant treatment. This method will be useful tool as an monitoring device. As a result of experiment using Daphnia magna as an indicator of toxicity, the optimal concentration of natural coagulant used in this experiments did not have a significant effect on toxicity.

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