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2005, Vol.14, No.5

  • 1.

    A Study on the Noise Correction Factor in Apartment Complex

    이내현 | Sunwoo Young | 박영민 and 2other persons | 2005, 14(5) | pp.247~254 | number of Cited : 0
    Abstract PDF
    Road traffic noise has increasing broader effects on urban areas as well as rural areas becauseof rapidly increasing traffic volume and newly-constructed roads. 10 sites in buildingdevelopment areas were selected and the noise level were measured by the apartment floorsand by the various block plans of apartment complex. Analysis result, about correction factor, in the case of right angle arrangement, apply -2.5dB(A). In the case of apartment house correlation of each floor apply 1st floors 0dB(A), 2stfloors 1.2dB(A), 3st floors 2.1dB(A), 4st floors 2.6dB(A), 5st floors 2.7dB(A), 6st floors 2.7dB(A),7st floors 2.4dB(A), 8st floors 2.0dB(A), 9st floors 1.6dB(A), 10st floors 1.1dB(A), 13st floors0.2dB(A), 15st floors 0.5dB(A). The level of road traffic noise in the arrangement construction ofright angle was about 3.0dB(A) at N-4 point and 2.1dB(A) at N-6 point lower than that of a plan figure, respectively. The results suggested that application of correction coefficient obtained by the apartment floor and by the arrangement construction can be improved in road traffic noise.
  • 2.

    Assessment of Water Quality Impact of Submerged Lakeside Macrophyte

    이요상 | Park, Jong-Geun | 2005, 14(5) | pp.255~262 | number of Cited : 8
    Abstract PDF
    In summer and early autumn, eutrophication occurs occasionally in many reservoirs. Lakeside macrophyte which is one of internal pollutants effects on water quality when it issubmerged during water surface is rising after rainy season. This study include examination ofpollutant load, species of plant, community structure and productivity of macrophyte in unitarea at lakeside. The result of this research will be used as a guideline of water qualitymanagement on reservoir through assessing water quality effect of submerged plant. The arealdistribution, composition of species and submerged area of macrophyte changes according torainfall pattern every year, so it is difficult to calculate nutrient load annually from submergedmacrophyte. In this study, the nutrient load from submerged macrophyte assess fromDaecheong and Juam reservoir in 2001. TN and TP load of submerged macrophyte shows0.043% and 0.069%, respectively, of annual discharge load on Daecheong watershed. At lakeJuam, TN and TP shows 0.64% and 1.28% load, respectively. The reason that nutrient load oflake Juam is greater than that of lake Daecheong is that macrophyte distribution area of lakeJuam is 5 times greater than that of lake Daecheong. Total nutrient load of lake Daecheong is 3times greater than that of lake Juam.
  • 3.

    Development of? NH3 emission factors using a dynamic flux chamber in a sewage treatment plant

    Jeon,Eui-chan | JaeHwan Sa | 박종호 | 2005, 14(5) | pp.263~273 | number of Cited : 7
    Abstract PDF
    In this study, the major emission procedures and emission characteristics were identified atthe site of sewage treatment plant which is one of the major sources of ammonia. At the sametime the emission factors and emission rates were estimated. In order to calculate the emissionflux, we used a Dynamic Flux Chamber(DFC), which is found to be a proper sampling devisefor area sources such as sewage treatment plant.It was found that the most stable sampling condition was when the stirrer’s speed of DFCwas 120RPM, and it would be the best time to take a sample 60 minutes later after setting thechamber.The relatively higher flux was shown in Autumn compared to summer and winter.Annual ammonia emission rates procedures were calculated as 906.32 mg/activity-ton,1,114.72 mg/activity-ton and 437.53 mg/activity-ton each at the primary settling basin, aerationbasin and the final settling basin, respectively. The ammonia emission rate the highest at in theaeration basin according to this test. This results was due to that the surface of aeration basin orthe final settling basin is relatively wider than the primary settling basin.
  • 4.

    Studies for International Trends in Health Impact Assessment and Linking HIA and EIA

    ImSoon Kim | Choong-Gon Kim | Seon-Hong Kang and 1other persons | 2005, 14(5) | pp.275~289 | number of Cited : 3
    Abstract PDF
    In Korea, health-related items under current EIA (Environmental Impact Assessment) systemcan only be found in the categories of hygiene and public health. However, environment andpublic health are not adequately connected and also health is underestimated even thoughhealth is an important component of environmental assessments. As a result, health is not wellintegrated within criteria for investigating the impacts on environment.International trends in HIA (Health Impact Assessment) to strengthen the connectionbetween environment and health were investigated in this research. Definitions, functions,circumstances, and merits of HIA in foreign countries were compared. By collecting andanalyzing international organizations’ and other countries’ data related with HIA and EIA,preceding conditions and execution plans were suggested to link EIA and HIA from SEA(Strategic Environmental Assessment) aspects and to successfully accomplish EIA in Korea.According to this research, EHIA (Environmental Health Impact Assessment) can predictand manage the results of economical development only under the principles of inhabitants’participation, sustainability, and social justice. EHIA should be modified and improvedtowards increasing regional and national capabilities. For this, preparation of adequate procedure is required to connect EIA and HIA.
  • 5.

    External cost forecasting of virtual point source in Suwon area using Impact Pathway Analysis- A comparison of Suwon to Paris-

    Jeong, Sang Jin | 2005, 14(5) | pp.291~303 | number of Cited : 0
    Abstract PDF
    Impact pathway analysis(IPA) is a bottom-up approach to estimates health andenvironmental risks from emissions of classical pollutants (eg. PM10, SO2, NOx and CO). Themodel starts from the emission rates of facility, calculates the yearly mean concentrations ofpollutants at the ground level using atmospheric dispersion models. After this, properepidemiological exposure-response functions are applied to determine the impact on thereceptors. Finally the methodology can monetise the calculated physical impact on the basis ofselected economic evaluation. The aim of this study is to evaluate an external cost of virtualpoint source in Suwon area using IPA. The results shows minor modification of local input datacan make it possible to apply the model to Suwon area.
  • 6.

  • 7.

    cquisition of Evidential Information to Control Total Volume of Road Density per Tributary Watershed

    Um, Jung Sup | 2005, 14(5) | pp.317~335 | number of Cited : 2
    Abstract PDF
    This paper is primarily intended to propose a new concept of “aggregate control of roaddensity” which is defined as the area-wide road surface per watershed area. An empirical studyfor experimental sites was conducted to confirm how a standard GIS technology can be used toassist in estimating the road density in terms of total volume threshold control. Guidelines for areplicable methodology are presented to provide a strong theoretical basis for thestandardization of factors involved in the estimation of the road space threshold; themeaningful classification of road types, delination of watershed boundary, interpretation fordistribution trends of road density etc. A variety of visual maps using overlay analysis can begenerated over large areas quickly and easily to show the fact that some degree of road spacealready exists in the experimental sites. They could be used as an evidence to limit furtherconstruction of road network in comparison with other tributary watershed. It is anticipatedthat this research output could be used as a valuable reference to confirm the potential ofintroducing the new concept of “site specific road density” to support more scientific andobjective decision-making in the process of road construction project.
  • 8.

    A Study on the Allocation of Permissible Water Pollution Load in the Total Water Pollution Load Management Plan - A Case Study of Gwangju, Gyeonggi Province-

    Sieheon Kim | RIM JAY MYOUNG | 2005, 14(5) | pp.337~348 | number of Cited : 1
    Abstract PDF
    Pollution load allocation can likely be much controversial, which is essential to formulate thetotal water pollution load management plan.Existing rules(or guidances) in Korea, can provide no specific criteria for load allocation.Therefore, this paper studied(comprehensively) possible standards how or why to choose anyparticular allocation method, which was applied in the Gwangju City’s load allocation for thesatisfaction of set water quality goal.This load allocation is basically focused on the load reduction of domestic wastewater ratherthan industrial wastewater, because the land-use is strictly regulated and larger sources ofpollution are few in the Gwangju City.This paper recommends the city to increase the capacity of sewage treatment plants, promotesewerage maintenance, and set higher effluent standards.