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金秀生,玄龍範,鄭賑化 동아대학교 환경문제연구소 1986 硏究報告 Vol.9 No.1
The result of the four-month survey of the leachate quality and treatment facility operation in the refuse landfill of Hwamyeong-dong. Pusan, is as follows: 1. For the efficient biological treatment of leachate, suitable amount of phosphorus should by supplemented, and as it has been made clear that in case of the period of reclaimation is long. BOD_(5)/COD_(Cr) is low whereas that of reclaimation is short. BOD_(5)/COD_(Cr) is high, BOD_(5)/COD_(Cr) ratio should be reflected in the designing of leachate treatment facilities. 2. In case of biological treatment includeed, the period of test working is required about 70 days. 3. As the atmospheric temperature has considerable effects on the operation of biological treatment plant, it is necessary to install aeration and retaining facility. 4. It has been found that more than 90% of treatment efficiency of refuse landfill in Hwamyeong-dong was maintained regardless of fluctuation of water quality, and the two step contact aeration system especially introduced too the Hwamyeong-dong treatment plant was maintaining continuous biological treatment efficiency.
서윤수,이문호,현용범 한국물환경학회 1986 한국물환경학회지 Vol.2 No.2
The roles of algal biomass as a organic pollutant in the fresh water lakes was estimated and oxygen demand exerted by dead algal cells was determined. The results are as follows: Mean chlorophyll-a content of ATCC 4 strains, Anabaena, Scenedesmus, Microcystis, Cblorella, was 0.84% of dry weight and mean COD demanded by 1mg dry weight of algal biomass was 0.34mg. We could calculate algal COD (mg/1) from chlorophyll-a concentration (mg/m^3) in the lake water by multiplication by 0.04. The proportion of algal COD to the lake water COD was about 6.7% when the lake was in the normal state. But the proportion was increased by more than 30% during the season of algal bloom, accordingly algae contribute as a important organic pollutant in this season. BOD_5 and BOD_12 demanded by dead 1mg algal biomass of Anabaena flos-aquae were 1.3mg, 1.6mg respectively. With this respect algal biomass can be serve as a serious organic pollutant and can consume much oxygen in the lake especially during the death phase of algal bloom.