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강화영 ( Kang Hwa-young ),김종천 ( Kim Jong-chon ),박상숙 ( Park Sang-sook ),김성진 ( Kim Sung-jin ) 한국환경기술학회 2001 한국환경기술학회지 Vol.2 No.2
본 연구의 목적은 유기성 폐슬러지의 중금속 흡착특성을 이용한 중금속 함유 폐수의 처리 가능성을 평가하는데 있다. 실험실 규모의 회분식 반응로를 이용한 본 연구 결과를 요약하면 다음과 같다. 유기성 폐슬러지에 대한 중금속 흡착 친화도는 Cd > Zn > Pb > Fe > Ni > Cu 순으로 나타났으며, 반응시간 90분에서 흡착평형에 도달했다. 유기성 폐슬러지에 대한 중금속 흡착은 단분자층 흡착을 나타내는 Langmuir와 Freundlich 등온식에 잘 부합되었다. 그리고 pH는 유기성 폐슬러지의 중금속 흡착에 중요한 영향인자로, 중금속 흡착의 최적 pH는 6.0임을 알 수 있었다. The purpose of this study is to evaluate the potentials to treat wastewater containing heavy metals using adsorption characteristics of heavy metals on wasted biological sludge. The results obtained from the study using lab-scale batch reactor are summarized as follows; The order of wasted biological sludge-metal affinity in adsorption was identified as Cd > Zn > Pb > Fe > Ni > Cu and adsorption equilibria of metals on wasted biological sludge were reached after 90 minutes. The Langmuir and Freundlich isotherms yield a fairly good fit to the adsorption data, indicating a monolayer adsorption of metals on wasted biological sludge. It was also found that the pH was important factors influencing the adsorption of metals on wasted biological sludge and the optimal pH values for the adsorption of metals was 6.0
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.