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RISS 인기검색어
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- 저자 : 김운수(Kim, WoonSoo) (검색결과 101 건)
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서울시 고농도 미세먼지 오염현상의 원인분석 및 지역별 맞춤형 관리대책
김운수 ( Woon Soo Kim ),김정아 ( Jeong Ah Kim ) 서울시정개발연구원 2011 연구보고서 Vol.2011 No.17
Citizens are increasingly concerned about the impacts of PM10 pollutants on human health, and on the urban environment. In the last several years, a growing number of scientific evidences have indicated that the PM10 pollution can more seriously bring human health risks in even the largest and most industrialized cities. This concern is backed up by increasing scientific evidence. In 2008, based on the clean air policy supporting system(CAPSS inventory), road transport, one of the major sources of urban air pollution, especially accounted for around 68.6% of all PM10 emissions in Seoul. Without dramatic reductions of PM10 emissions from transportation sources, the on-going safe and walkable city movement would not be successful. Through the recent questionnaires survey (2011, kim, et. al), it is realized that most of the citizens has deeply interested with improving air quality. However, they have not favorable position on the future perspective of clean air quality in Seoul. Such negative perception might be mainly stemming from the emission contribution of automobiles. As long as more stringent emission-reducing policy options are not applied, it must keep in mind that negative perceptions are not easily transformed to the positive ones. This gives the motives to the decision-maker of Seoul city government for preparing general PM10 reduction plans, with focusing on provision of low emission vehicles such as attachment of DPF control device, accelerated retirement of old vehicles, conversion of diesel buses to CNG buses, Due to the such PM10 reduction plans, the level of PM10 concentrations in Seoul are dramatically showing yearly declining pattern. In 2010, the average PM10 level was 49 ㎍/㎥, compared to the level of 76 ㎍/㎥in 2002. The overall iso-curves of PM10 concentration clearly represent the context of reducing pollution levels. The next step is how to manage the local high level of pollution concentrations, thereby keeping declining pattern of average concentration level in Seoul. Thus, the purpose of this study mainly given to preparing the inventories of each ``Gu`` districts, in order to figure out local-based emission reducing targets, thereby efficiently reducing the PM10 emissions in a customized management way. This study might be used as a ``lively practical guideline`` to assist Seoul city collaborate with ``Gu`` districts to implement actions, and obtain the greatest benefits from bottom-up PM10 reducing activities, The findings of this study is summarized as follows: 1. Identification of Local-based PM10 Inventories for MBO Management It is realized that the yearly PM10 concentration levels in Seoul have showed declining pattern, but approaching to the marginal limit to reduction. In order to exceed such limit, the preparation of ``Gu`` districts emission inventories is required, to figure out the possible customized management of emission sources in ``Gu`` districts with introducing MBO management to ``Gu`` emission sources. 2. Customized Management of Local-based Emission Sources Reducing local-based PM10 emissions can be useful for mitigating the limit of reducing average PM10 pollution level in Seoul. Through the ``Gu`` emission inventories, each target might be easily extracted. In particular, fugitive dust from paved roads, construction sites, play grounds, and open spaces needs to be managed based on management guidelines. In addition, meat cooking is another PM sources to be managed. 3. Supplements of Customized Management Strategies Considering that many local governments around the world have made it a policy priority to reduce PM10 emissions, it`s more or less imperative for Seoul city to follow such streams. In case of reducing the average level of PM10 concentrations in Seoul, the customized management of local-based emission sources is also required. Thus, in dealing with local-based PM10 sources, It is recommended that Seoul city provides supplements such as the collaboration between Seoul city and 25 ``Gu`` districts, enactment of PM10 reduction local ordinance, and enforcement of large meat-cooking activities.
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김운수 ( Woon Soo Kim ),김정아 ( Jeong Ah Kim ),김원주 ( Won Joo Kim ),변유진 ( Yu Jin Byun ) 서울시정개발연구원 2010 연구보고서 Vol.2010 No.15
Current Seoul metropolitan government`s parks and greens spaces policy is focused on the quantity of spaces; however it is crucial to prepare the plan to improve quality of parks and green spaces to address climate change and to accommodate low carbon society. Purpose of this study is to prepare the plan for ensuring feasible carbon reservoir and maximizing carbon reduction to realize the low carbon green city. 1. Function of parks and green spaces at the era of low carbon green growth Recently, the policy on parks and green spaces has shifted from ensuring quantity to improving quality of green spaces to maximize carbon reduction and reservoir in both direct and indirect ways that include the function of controlling microclimate and reducing heat island effect. The value of trees in parks and green spaces has been reevaluated. In 2009 summer, the results of measuring temperature of sites throughout the Seoul demonstrate that the green spaces and parks score the lowest and followed by the residential and commercial areas. As a result of measuring heat island effect of street trees, the eastern sycamore family (Platanus occidentalis) street at Euljilo was measured 29. 3℃ which was 8.8℃ different from the pine tree street measured 38.1℃. The Seoul Plaza, which has no trees was measured 40.2℃ and reveals heat island effect of the central city. 2, Asset analysis of green spaces The carbon storage capacity of forest is 41.4tC/ha, of urban parks is 17.3tC/ha, and of street trees is 176kgC/tree. The total amount carbon storage capacity of forest in Seoul is 454,783.73tC, of urban parks in Seoul is 80,567.97tC, and of street trees is 10,872,123tC. The total amount of carbon storage in the city limit of Seoul is 568,152.2tC. Kangbuk-gu and Gwanak-gu scored the highest for the total area and amount of carbon storage of forest and Dongjak-gu and Mapo-gu scored the highest for the parks. The total amount of carbon storage of Kangbuk-gu, Nowon-gu, Eunpyeong-gu, Jonglo-gu is larger than other districts. 3. Analysis of relationship between green spaces and heat island areas The distribution of heat index, tropical night, cooling/heating degree-day demonstrates that it has a close relationship with distribution of green spaces and impermeable paving due to land-use. To decrease temperature in the urban areas, it is essential to expend the total area of green spaces and to create green spaces and water ways on the right of way. 4. Guidelines to ensuring carbon reservoir and reducing carbon emissions The method to ensure carbon reservoir by expending parks and green spaces in the urban areas include creating and expending urban forest, ensuring green spaces along the right of way, expending landscaping areas, water spaces, and urban plazas of residential and commercial areas. To create and maintenance parks and green spaces, it requires to consider the adoption of biotope area factor within the total area of parks, planting tree types that has greater carbon storage capacity, production and utilization of energy within parks, management of biomass, allocation of parks and the network of greenways. 5. Policy recommendation The Urban Forest project should increase monitoring on expending carbon reservoir and build governance collaboration. Strategic approach to create urban forest focusing on the area where is needed is crucial. To maintenance street trees and to expend street trees, collaboration with other departments through regular meetings is necessary. Urban agriculture takes a important role as a type of carbon reservoir, but because study on current status of urban agriculture in Seoul is lack, it first need to conduct to collect information on urban agriculture in Seoul.
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분체공학 유동층 재료 ( 무기 , 유기 , 고분자 ) : 반회분식 반응기에서 Polyacrylic Acid 를 이용한 Lysozyme Precipitation 연구
김운수(Woon Soo Kim),김우식(Woo Sik Kim) 한국화학공학회 2000 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.38 No.2
Experimental investigation on the effects of operational conditions, such as agitation intensity, agitation time and PAA dosage, on the precipitation of lysozyme and PAA(polyacrylic acid) with several molecular weights in Rushton type standard semi-batch reactor was carried out. When PAA with a molecular weight of 4,000,000 was used as a precipitant, the larger particle size of lysozyme precipitate as well as the higher recovery ratio of lysozynte were obtained than when PAA with a molecular weight of 450,000 and 2,000 were used. The agitation intensity in the reactor influenced the particle size of the precipitate. except for in PAA with a molecular weight of 2.000, but had no influence on the recovery ratio of lysozyme regardless of the molecular weight of PAA. The morphology of lysozyme precipitate was amorphous, the morphology change was not observed with change of the molecular weight of PAA.
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신재생에너지 공급의무화제도 시행에 따른 서울형 햇빛발전지원제도 도입방안 연구
김운수(Woonsoo Kim),김정아(Jeongah Kim) 서울연구원 2012 서울연구원 정책과제연구보고서 Vol.- No.-
It is no surprise that all developed countries and many developing ones around the world are in a fiercer green race for responding climate change issues and achieving promised low-carbon societies. The Korean government has met the strong needs for “low carbon, green growth” to cope with global climate changes, and is introducing the various policies for accelerating renewable energy generation systems. Seoul city had already prepared the grand vision for both climate protection and renewable energy generation initiative in 2030, thereby serving Seoul in implementing effective and practical actions in order to achieve its emission reduction and renewable energy production goals by 2030. In addition, Seoul city has recently announced the new movement to sustainable energy planning, “world-leading climate and environment capital city, Seoul”, including strategies of production of renewable energy, energy efficiency, citizen participation, and capacity building. These are expressed in forms of 10 core projects, resulting in energy savings and production effects equivalent to electricity generation of 1 nuclear power plant. Considering many local governments around the world, from the viewpoints of self-supporting energy system, have made it a policy priority to generate renewable energy, it’s more or less imperative for Seoul to follow such streams. Based on the current mandatory implementation of RPS system since 2012 year, the purpose of this study is given to possible introduction of Seoul-typed FIT system, as a subsidiary policy tool, thereby bringing a host of benefits to Seoul city’s renewable energy generation plan. Thus, Switching to cleaner energy sources, such as solar photovoltaic system of roof-top, might contribute to a better renewable energy production, and at the same time relieve Seoul’s dependence on fossil fuel-based energy. For possible introduction of Seoul-typed FIT with co-existence of RPS system, this study points out the comparative concluding remarks for solar photovoltaic in Seoul as follows:①subsidy to installation of solar photovoltaic system, ②additional support in proportion to amounts of traded REC, ③maintenance cost supporting of solar light equipment, and ④financial support with cheap capital. With the mandatory implementation of RPS policy, more preferred way might be the additional support in proportion to amounts of traded REC with co-existence of both RPS and Seoul-typed FIT system.
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