http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
강선홍,최상일 ( Seon Hong Kang,Sang Il Choi ) 한국물환경학회 1996 한국물환경학회지 Vol.12 No.2
Prior studies at Iowa State University tend to indicate that petroleum products such as gasoline, diesel fuel, and crude oil can be removed from soil by bioremediation. These studies also indicate that gasoline would largely be removed by volatilization and that diesel fuel would not. In order to investigate volatilization as a competing process for the removal of fuels with bioremediation, the movement of gasoline in the sand was investigated and a model based on a material balance was developed to predict the evaporation of petroleum products from contaminated sand. The results show that the fuel was drying out from the top down and at the level where the liquid fuel is found, the air in the pore space in the sand is saturated with fuel vapor. Diffusion moves the vapor to the surface of the sand where the flow of air maintains the fuel vapor concentrations near zero. The model explains that the evaporation pressure is an important factor and why the rate of volatilization of gasoline is much higher than that of diesel fuel.
Thiobacillus ferrooxidans 를 이용한 광산폐기물내의 중금속 용해에 관한 기초연구
강선홍,최상일 ( Seon Hong Kang,Sang Il Choi ) 한국물환경학회 1995 한국물환경학회지 Vol.11 No.2
Zinc metal and zinc sulfide were recovered by oxidative dissolution using Thiobacillus ferrooxidans, which is aerobic, autotrophic, and acidophilic bacteria. Thiobacillus ferrooxidans derive energy from oxidation of ferrous iron and elemental sulfur using molecular oxygen as an electron acceptor. From the 10,000㎎/L of initial zinc concentration, 97% solubilization of zinc metal was obtained from coarse FeS₂ due to microbial action. Also, about 70% metal solubilization occurred with fine sized materials in 58days. The general trend observed for the ZnS systems was a decrease in pH with time. The pH drop is an indication that microorganisms are acclimating and producing acidic by-products. The iron oxidation state changes due to substrate containing coarse particle size FeS₂ was shown. The sharp drop of ratio of Fe(II)/Fe(Total) and sharp increase of ratio of Fe(III)/Fe(Total) was observed in 20days after inoculation. Thus, microbial activity began more rapidly for the coarse particle size substrate than for the fine FeS₂.
응집제를 이용한 양돈폐수의 침감성 및 슬러지의 탈수성 증대
강선홍 ( Seon Hong Kang ),민경석 ( Koung Suk Min ) 한국물환경학회 2002 한국물환경학회지 Vol.18 No.3
Laboratory experiments using metal coagulants[alum, PAC(Poly Aluminum Chloride)] and polymer were conducted in this study to enhance dewatering and settling characteristics for swine wastewater. In this study, application of mixture of metal coagulants and polymer improved settling and dewatering characteristics for swine wastewater compared to using only metal coagulants, Also sludge volume was decreased when the mixture was applied. About 80-90% of settling velocity was increased and thickening ratio was increased as much as two times when adding 100mg/L of cationic polymers. Polymer was excellent for enhancing dewatering property among coagulants.
파일럿 규모의 선회식 가압부상공정에서 응집제 종류별 유해 조류 제거효율 비교
오홍석 ( Hong-sok Oh ),강선홍 ( Seon-hong Kang ),양시천 ( Shi-chun Yang ),남숙현 ( Sook-hyun Nam ),김은주 ( Eun-ju Kim ),황태문 ( Tae-mun Hwang ) 한국수처리학회(구 한국수처리기술연구회) 2018 한국수처리학회지 Vol.26 No.4
Dissolved air flotation (DAF), one of the most representative physico-chemical processing technologies used to remove suspended particles or algae in aquatic environment. Cyclonic Dissolved Air Flotation (DAF), a dissolved air flotation method displaying improved performance, has a structure capable of forming twirling flows that produce microbubbles that adhere to suspended matter and float to the surface of the water passing through the float separation tank. The purpose of this study is to evaluate the cyclonic-DAF process for the treatment of harmful algae in aquatic environment. The effect of coagulants type, such as PAC, PolyDADMAC and R-119, were investigated. In this experiments, algaecide named as R-119 showed the effective coagulant to remove chlorophyll-a and algae. For the effect of the coagulant dose, the removal efficiency of algae was increased as coagulant concentration increased. The optimal concentration coagulant has been similarly observed at 60 mg/L for PAC and R-119. However, PAC showed that it did not meet the number of cyanobacteria cells below the algae level suggested by the algae warning guideline. In the case of PolyDADMAC, the removal of cyanobacteria cells showed excellent results, but turbidity and suspended solids were significantly lower than that of PAC and R-119.
TiO<sub>2</sub>를 이용한 저농도 유기오염물질 제거에 관한 연구
이용훈,강선홍,Lee, Yong-Hoon,Kang, Seon-Hong 대한상하수도학회 2013 상하수도학회지 Vol.27 No.1
Microbiological treatment, chlorination, and ozonation are usually used for water treatment. However, there is weakness that these methods can't decompose and eliminate recalcitrant organic pollutants perfectly. It is possible to eliminate recalcitrant organic pollutants when photocatalysis of $TiO_2$ is used. In this study, the removal efficiencies of organic pollutants by using photocatalyst of $TiO_2$ in the slightly polluted golf club water hazard and a river were investigated. The amount of $TiO_2$ was divided into three categories of 1 g/L, 2 g/L and 4 g/L in order to investigate the adequate amount of $TiO_2$ and the removal efficiency. UV light was used as a light source for the reaction of photocatalyst. As a conclusion in this study, the efficiency of turbidity removal was increased in proportion to the amount of $TiO_2$ until 4 hours. After then the turbidity was gradually decreased. Finally, the optimum concentration of $TiO_2$ was 4 g/L. The efficiency of COD removal was increased in proportion to the amount of $TiO_2$ regardless of time.
남조류 제거를 위한 선회식 가압부상장치 현장 적용에 관한 연구
오홍석 ( Oh Hong-sok ),강선홍 ( Kang Seon-hong ),남숙현 ( Nam Sook-hyun ),김은주 ( Kim Eu-ju ),구재욱 ( Koo Jae-wuk ),황태문 ( Hwang Tae-mun ) 한국환경복원기술학회(구 한국환경복원녹화기술학회) 2018 한국환경복원기술학회지 Vol.21 No.5
Cyclonic-dissolved air flotation(Cyclonic-DAF), an advanced form of pressure flotation, applies a structure that enables the forming of twirling flows. This in turn allows for suspended matter to adhere to microbubbles and float to the surface of a treatment tank during the process of intake water flowing through a float separation tank. This study conducted a lab-scale test and pursued geometrical modeling using computational fluid dynamics(CFD) to establish a pilot scale design. Based on the design parameters found through the above process, a pilot cyclonic-DAF system(10㎥/hr) for removing algae was created. Upon developing the pilot-scale cyclonic-DAF system, a type of algae coagulant(R-119) was applied as the coagulant to the system for field testing through which the removal rates of chlorophyll-a and cyanobacteria were evaluated. The chlorophyll-a and harmful cyanobacteria of the raw water at region B, the field-test site, were found to be 177.9mg/㎥ and 652,500cells/mL respectively. Treated waters applied with 60mg/L and 100mg/L of algae coagulant presented removal efficiencies of approximately 95% and 97%, respectively. The cyanobacteria cell number of the treated waters applied with 60mg/L and 100mg/L of algae coagulant both that were equal to or less than 1,000cells/mL and were below attention level criteria for the issuance of algae boundary.