Various problems such as erosion, leaching, and dispersion of tailings have occurred in abandoned mine areas. Especially, huge damage was caused by erosion of tailings by heavy rains in the research areas. Mine tailing of Sangdong tungsten contains various kind of heavy metals and Arsenic (As) exceeds more than 90 times than standard. In case this heavy metal flows into stream by erosion, serious damage is predicted. After experimenting Miscanthus sinensis growth of Mycorrhizae in comparison between infected and uninfected Mycorrhizae, plant infected by Mycorrhizae showed increased figures in average grass growth length (cm/ month), average organic body quantity (gfw/month) and average dry weight (gdw/month) by 47%, 33%, 32% respectively. Because of the small quantity of organic matter contained in the tailing of abandoned mine areas, the use of Mycorrhizae would be comparatively effective. This study suggests the use of Mycorrhizae infected plant to prevent erosion in abandoned mine waste areas.

A study on the possibility of recycling by solidification using tailings from abandoned metal mine were studied. The study was carried out on testing compressive strength of concrete made by different ratio of various mine tailing, chemical speciation of Cd, Cu, Pb and Zn in the tailing by sequential extraction procedure and SPLP leaching test. Mixing of mine tailings with cement or asphalt and aging of mortar gave strong influence on compressive strength of concrete. Marshal's stability of asphalt with tailing waste were higher of 98.0~101.0% than not added one. Therefore it was recommended to use of the tailings to low the infiltlation of the water to protect the bank in the abandoned mine region. Total metals in concrete and asphalt with tailing waste were lower than that of tailing waste. The amount of adsorbed fraction and carbonate fraction which were labile in the aquatic environment were very lower in the concrete and asphalt specimen than mine tailing waste.Leachabilityof studied metals are under the waste management standard.

먹는 물 내에 존재하는 발암원인으로 의심되는 유기화학물질을 재래식 정수처리방법으로 제거한다는 것은 불가능하다. 이들을 AOP산화 & M/F membrane 혼성공정법을 이용하여 목적하는 처리수로 처리하고자 지하수를 반응조에 유효용량으로 유입하고 유기화학물질을 인위적으로 투입 혼합하여 충분히 희석시키고 이것을 효율적으로 처리하기 위해 최적운전조건을 도출하였다. 유기 화학물질 중 VOCs는 페놀과 톨루엔을 그리고 농약은 파라치온, 다이아지논과 카바닐을 대상으로 조사하였다. 실험은 각각 분류별 단일용액과 혼합용액으로 수행하였으며, 실험결과 충분한 분해 및 제거를 위한 운전조건은 H2O2는 150 mL로 정량 주입하고, pH는 5.5~6.0, 온도는 12~16℃로 일정하게 유지하고, 용존오존량은 5.0 mg/L이상, 반응시간은 30~40분이 최적 조건이었으며 그리고 같은 반응기 내 분리막의 사용은 0.45 μm 공경크기의 M/F membrane을 이용하여 대량의 음용수를 얻기 위한 결정이었다.

By employing primarily the Kendall's Concordance Test, the paper attempted to conduct an experts' evaluation on the interaction among the agents in Busan marine tourism cluster and recommend some measures for policy consideration for the cluster's activation. For this purpose, a conceptual framework was developed to guide the assessment by using inter-agent cooperation and network approaches regarding the nature of the marine tourism cluster. Such factors as cooperation, competition, relationship marketing, and networking were identified as critical. Findings of the study imply that Busan marine tourism cluster is at its embryonic stage and needs desperate measures for improvement in the inter-organizational cooperation and networking, the major regional characteristics that determine the competitiveness of marine tourism.