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문추연,안종수,김수생 동아대학교 환경문제연구소 1993 硏究報告 Vol.16 No.1
The Purpose of this research is aimed to find out optimum operating conditions for Phosphorus removal by AB-Process. The Comparision between a partially aerated at B-step and fully aerated AB-Proecess was made at different mixing and aeration time, detention time. The BOD removal efficiency showed up to 90% in the partially aerated at B-step as well as fully aerated process. In the partially aerated process at B-step the substrate removal efficiency remained constant irrespective of anaerobic/aerobic reactor retention time ratios. Phosphorus removal efficiency in the partially aerated process at B-step was higher than that in the fully aerated AB-Process. Phosphorus removal efficiency in the process tended to increase as the anaerobic reactor volume in the B-step increased.
문추연,이동섭 경운대학교 산업기술연구소 2002 産業技術硏究論文誌 Vol.5 No.1(A)
The purpose of this study is characteristic analysis of municipal sewage with source(union, business, combination and individuality). In the analysis results of union sample, average concentration in business area of TBOD, TCOD_Mn and TCOD_Cr were 190㎎/l, 83㎎/l and 336㎎/lℓ, respectively. And TCOD_Cr /TBOD ratio was 1.8. TBOD of union sample from individuality house area was 99㎎/l. In the analysis results of business area sample, average concentration of TBOD, TCOD_Mn and TCOD_Cr were 127㎎/l, 83㎎/l and 243㎎/l, respectively. Average concentration of T-N was 51.8㎎/l. In the analysis results of combination house area sample, average concentration of TBOD was 128 and TCOD_Cr /TBOD ratio was 1.7. In the analysis results of individuality house area sample, average concentration of TBOD, TCOD_Mn and TCOD_Cr were 87㎎/l, 46㎎/l and 218㎎/l, respectively, and TCOD_Cr /TBOD ratio was 2.5.
문추연,박진식 경운대학교 산업기술연구소 2000 産業技術硏究論文誌 Vol.3 No.1(A)
In this study, the Classification of Forest Vegetation using field investigation and Landsat TM Data was examined. A merit of the field investigation is obtained detail data but a fault are inaccuracy in broad area, badly economic. A merit of the Landsat TM Image processing are easy collect of data in wide area, easy approach of the investigation area, possibility of repeat investigation.
문추연,김동일,김수생 동아대학교 생산기술연구소 2000 生産技術硏究所硏究論文集 Vol.5 No.2
Recently in Korea and developed countries, nitrogen and phophorus removal are the main target to improve effluent qualities, in order to protect discharge basins from eutrofication by N and P. Introduction of an advanced treatment function to existing wastewater treatment systems, which can be removed nitrogen and phophorus as well as BOD, COD and SS, have been required to protect water resources from domestic and industrial wastewaters. For the improvement of effluent quality through nitrogen(N) and phophorus (P) removal, this study conducted to investigate and analyse of the municlpal sewage treatment process such as VIP(Virginia Initiative Plant) process on cost effectiveness operating and improvement of effluent quality. Based on the results of the experiments, The average removal efficiencies of organic matter were BOD 87.4 ~ 91.8%, COD 77.7 ~ 81.3%. At influent concentration of T_-N 41.8mg/l, NH_4-N 36.2 mg/l, T_-P 3.14mg/l and PO_4-P 1.6 mg/l, nutrient removal efficiencies were NH_4-N 95.9%, T_-N 67.8%, PO_4-P 69.9%, and T_-P 70.7%.
文秋淵,朴鎭植,金秀生 동아대학교 환경문제연구소 1995 硏究報告 Vol.18 No.2
This study has performed to investigate and evaluate the amount of pollutants and the status of water quality of the Hyung-San River and prediction water pollution loads. In the field survey('94.11-'95.3), mean concentrations of BOD were found 0.78-4.90ppm, respectively, which were exceeding the second grade at inflow point of Sindang stream The predicted BOD pollution loads of Hyung-San river in 1996, 2001, 2006, 2011 were 13,068.3 kg/day, 13,003.1 kg/day, 9,355.6 kg/day, 9,506.6 kg/day.
釜山市 街路樹의 大氣汚染物質 및 鹽分의 濃度에 관한 硏究
남정칠,문추연,박승범 東亞大學校生命資源科學大學附設 農業資原硏究所 1996 農業生命資援硏究 Vol.5 No.1
This study was to investigate the element of SO₂, Pb, Zn, Cu, Fe, Mn, Cd and the NaCl concentration in the leaves. The object of this study was Ginkgo biloba, Pinus thunbergii, Platanus occidentalis, Pruns yedoensis and camellia japonica, and these were planted in the city of Pusan. The study considered such factors as the sort of the tree, the month of the survey, the position of the tree. The results of this finding are as follows: The factor of the month indicated that regardless of the sort, the changing quantity of the SO₂ for all surveryed trees continued to increase as the time from Spring to Autumn passed. Particularly, the increase happened to the case of Ginkgo biloba and Platanus occidentalis, but was slow in Pruns yedoensis, Camellia japonica and Pinus thunbergii. SO₂-related standing was placed as follows: Ginkgo biloba for 0.65%, Platanus occidentalis for 0.56%, Pruns yedoensis for 0.31%, Camellia japonica for 0.27% and Pinus thunbergii for 0.25%. For the average content of heavy metal in the leaves the research founded the Fe for 298.5ppm, Mn for 28.2ppm, Zn for 24.9ppm, Cu for 6.8ppm, Cd for 1.44ppm and Pb for 0.91ppm. The Ginkgo biloba out of the surveyed trees indicated the high content of Fe and Cu, and the Platanus occidentalis recorded the high percentage of Mn, Zn and Cd. The findings thus concluded that based on the absorption and accumulation of SO₂ and each heavy metal, Ginkgo biloba and Platanus occidentalis are considered as the best street trees planted in the city. The NaCl concentration of the surveyed areas were proportional to the distance of the seaside. Specifically, the NaCl concentration of June was higher than that of April. The lowest was in August and the highest in October. The standing for the trees was placed as followe: Ginkgo biloba, Pinus thunbergii, Platanus occidentalis, Pruns yedoensis and Camellia japonica.
박진식,문추연,김동일 경운대학교 산업기술연구소 2001 産業技術硏究論文誌 Vol.3 No.2(B)
In this study, Activated Sludge was operated for treatment of cosmetic wastewater and combined with sewage The results from this study are follows. During the experiments, average COD and BOD concentrations of raw wastewaters were ranged 690∼1,010 ㎎/l, 550 ∼ 880㎎/l respectively, and fluctuated sharply with time. COD removal efficiency was 73.6% at HRT 12hr. It is higher removal efficiency than HRT 4hr 62.6%, HRT 8hr 69.4% when cosmetic wastewater combine with sewage, COD and BOD removal efficiencies were higher than wastewater only, therefore treatment of combined sewage was effective.
이동섭,문추연 경운대학교 산업기술연구소 2002 産業技術硏究論文誌 Vol.5 No.1(B)
Ceramic filter system alone can remove particulates and gaseous air pollutants simultaneously without compulsory cooling systems, thus reducing installation and operating cost significantly. simultaneous removal tests of particulates and gaseous pollutants were performed using catalyst doped low density ceramic filters. Dise(50ø×10t) low ceramic filters were doped with three different catalysts such as Cu, Mn and Co to remove particulates, SOx and NOx. Removal efficiencies of SOx and NOx were greatly affected by the catalyst contents, operating temperatures. Tests were focused to reveal optimum operating temperature for different catalysts. NOx removal efficiencies of Mn, Cu, and Co doped filters were 85% at 300℃, 90% at 400℃ and 90% at 450℃, respectively.