고정화된 백색부후균을 이용한 염료의 탈색에 관한 연구

원찬희,김종신,박상숙 한국환경과학회 1998 한국환경과학회지 Vol.7 No.3

Decolorization of congo red, rhodamine B was investigated by the white rot fungus Irpex lacteus which has biodegrading capability of various recalcitrants. White rot fungus Irpex lacteus is immobilized by PVA-freezing method. An immobilized Irpex lacteus decolorizes 91% of congo red in 8 days under culture with glucose 2%(initial conc.). It also showed 70% of decolorization at 3 days in the state of putting MnSO_4 1 mM. But, rhodamine B has no significant differences about decolorization among different mixture ratio of Irpex lacteus with PVA, concentration of carbon, nitrogen and manganese sulfate.

Fenton 산화공정에 의한 침출수 처리

원찬희,김종신,김형엽 대한환경공학회 1999 대한환경공학회 학술발표논문집 Vol.1999 No.8

하,폐수처리(2) : Trametes sp에서 배출된 laccase를 이용한 페놀화합물의 분해특성

원찬희,이순영,유혜정,최홍철 대한상하수도학회 2003 공동춘계 학술발표회 논문집 Vol.2003 No.-

해성점토의 물리적 및 화학적 특성에 미치는 염분의 영향

元燦喜,李秉錫 全北大學校 1992 論文集 Vol.34 No.-

The purpose of this study is to investigate the effect of the salt on the physical and chemical properties of marine clay based on the experiments such as specific gravity, grain-size analysis, consistency limit and PH test. The main results of this study are summarized as fellows. 1) The specific gravity of soil containing salt was greater than saltless soil and the specific gravity of soil containing salt was found to be decreased with desalting soil. 2) Due to floculation by the effect of salt, the grain size of marine, soil was found bigger than original grain size and passing percent also was more then 100% 3) The values of liquid were decreased by 7 ∼ 16%, plastic limit 0 ∼ 10%, with the increase of salt content. 4) The PH value was increased by 9.7 as 1% Na_2CO_3 was added. But when Na_2CO_3 was added more than 1%, the increase of PH value was little, with the increase of Na_2CO_3 content. And quantity of NaCl did not appear to influence PH value of sample soil and soil containing Na_2CO_3.

유한차분법에 의한 저수지 물순환에 관한 연구

元燦喜 全北大學校 附設 都市및環境硏究所 1990 都市 및 環境硏究 Vol.5 No.-

A two dimensional explicit finite difference circulation model with appropriate boundary condition is developed to solve the linear shallow water equations. The finite difference grid is a staggerd distribution of variables and computed vertically-integrated flow per unit width in a computational domain. The proposed circulation is applied to SANG KWAN reservoir. Computed results are as follows; 1) It is easy to understand mass conservation that parameter took discharge per unit width. 2) In numerical results, it is represented the flow pattern very well and demonstrative purpose. 3) It is considered wind effect in order to explain physical behavior in reservoir.

새만금수역의 일차생산력에 관한 연구

원찬희,김종신 全北大學校 附設 都市및環境硏究所 2000 都市 및 環境硏究 Vol.15 No.1

Saemankeum Construction Plan, constructing a 33km tide embankment, is a project that builds 28,300ha land and 11,800ha artificial lake. Since there is a high potential that eutrophication could appear at Saemankeum Lake, its construction has attracted a lot of attentions from academic circles as well as the government. Thus, this study is to estimate the primary productivity in Saemankeum area. To investigate the primary productivity, sample were collected 7 times from May to November in 1998 at seven points. The results were as follows ; The concentrations of Chlorophyll-a in this study area were in the range of 5.3∼46.2㎎/㎥. Mean primary productivity in Saemankeum area was estimated to be 161.6∼990.2㎎C/㎡/d which is wuite similar value to the recent results from the Korea. The highest production rate was found at October in 1998. Therefore, trophic level of the study area was ranged as mesotrophic level by Linkens' Method.

동진강 유역 비점오염원 정밀조사

원찬희,정팔진,김민정,조선영,김세훈,김종천 전북대학교 공학연구원 ( 구 전북대학교 공업기술연구소 ) 2002 工學硏究 Vol.33 No.-

Nonpoint source pollution(NSP) arises due to agriculture activity and it is quite an extensive and complicated problem in order to control and has received a great deal of concern during the recent years, whereas point source are known to originate from an estimated volume of contaminant discharged from a distinguishable source. Extensive research work have been conducted and presented in the past with regard to the various characteristics of watershed on Dong Jin River(DJR), however there are certain drawbacks of existing survey for determining important polluting sources, distribution features of pollutants and estimated load of the organic and nutrients from the creeks. Unfortunately, investigation for loadings originating due to agricultural drainage was not satisfactory, although the regional consideration for DJR across Kim Je Field(KJF) as an agricultural area receives a reasonable source point in the agri-pollution management. Therefore it was necessary to carry out a thorough investigation into the diffuse sources resulting, to form the pollution-developing estimation and to evaluate the output roperties and determining various factors in the generation of non-point pollution. Eventually, this research work would serve as an useful tool for the development of predictive pollution management for DJR. Non-point sources in the present work were classified as municipal non-treated sewage water discharged into the river, loadings through agricultural drainages in the dry/wet field and inadequate treatment of wastewater generated from livestocks. The entire duration of the research work was from December-2001 to July-2002. Site measurement were conducted during various season, in a dry season(December), in rainfall, in seed-sowing time and also collecting data from the rural public organizations related to water management was done and examined and examined during the mid of research work. Similarly, domestic wastewater loadings due to population was based on area unit, as City, Country, Up, Myon, Dong, Ri. The Dong Jin River watershed contains small three Creeks, KoBu(KB), DongJin(DJ, including JeongEup(JE) and ChilBo(CB), WonPyong(WP). It was further divided into 32 sub-watersheds which comprises of further 5,18,9 watersheds in the creeks respectively. The results obtained from research work are presented as follows. Animal productions have marked differences in the rate of pollutant loadings reported in the following sequence: DJ(only CE)>WP>CB>KB, in a case of Korean cow and milk cow. However, it was revealed that WP creek became significantly higher than any other livestocks. According to statistical data for land use, rice field(369.0㎢) and forest(378㎢) have much occupation prior to dry paddies(125.0㎢), residential land(32.0㎢) and others(5.0㎢). Especially, rice fields receives 2.5∼3 times than dry paddies in size.

기타(1) : Trametes sp에서 배출된 laccase를 이용한 PAHs의 분해특성

원찬희,이순영,유혜정,홍정진 대한상하수도학회 2003 공동춘계 학술발표회 논문집 Vol.2003 No.-

동진강 유역의 농업활동에 의한 수질변화와 실측부하량

원찬희,정팔진,김민정,현미희,박정훈,송재환 전북대학교 공학연구원 ( 구 전북대학교 공업기술연구소 ) 2002 工學硏究 Vol.33 No.-

The entire duration of the research work was from December-2000 to July-2002. Site measurement were conducted during various season, in a dry season(December), in rainfall, in seed-sowing time and also collecting data from the rural public organizations related to water management was done and examined during the mid of research work. Generally, the Dong Jin River watershed contains small three Creeks, KoBu, DongJin(including JeongEup and ChilBo, WonPyong). It was further divided into 32 sub-watersheds which comprises of further 5, 18, 9 watersheds in the creeks respectively. Inflow loading to the river was calculated from measurement of general water quality and quantity and these field surveys were made thrice times in agricultural drainage channels, where fertilizers and pesticides leaching from the surface have an direct effect for the deterioration of the several creek and river. Estimation of contaminant loading has been done by using unit loading based on the notification No. 1999 - 143 of the Ministry of Environment. Most of estimated loading data reported during the research work were slightly higher when compared with the notification of the Ministry but they do not have any significant effect. It was assumed that sub-watersheds have considerable field survey loading data, which were affected due to non-point source pollution load as compared to point source. For investigation of surface rainfall ranging from .50㎜ during non-farming or .10 rainfall on the period of farming, BOD loadings in the field during farming showed slightly higher levels in comparison with discharge loadings, T-N also showed the similar trend as discussed earlier.

침출수 집배수관 근방의 혐기성·호기성 영역에서 침출수 정화능력에 관한 연구

원찬희,김영규,박서현 대한환경공학회 1997 대한환경공학회 학술발표논문집 Vol.1997 No.12