• Title/Summary/Keyword: air quality improvement

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On the management methods for regional air quality improvement

  • Park, Chan Jin
    • Journal of Urban Science
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    • v.6 no.2
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    • pp.1-13
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    • 2017
  • The air quality management in regional viewpoint was investigated for the improvement of national air pollution with various standard air pollutants. The focal region in this research is north-eastern region in asia where the many developing industries are located in neighboring countries. The major concerns were the trends of air quality in recent years and the state of environmental technologies and policies of air quality in each countries. The regional air quality management for the improvement of air pollution and the effective programs were suggested for the effective air quality management.

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Evaluation Method for Improvement of Indoor Air Quality Using Mass Balance (물질수지를 이용한 실내공기질 개선정도 평가)

  • Kim, Young-Hee;Kim, Moon-Hyeon;Yang, Won-Ho
    • Journal of Environmental Science International
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    • v.15 no.10
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    • pp.913-918
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    • 2006
  • Despite the wide distribution of air pollutants, the concentrations of indoor air pollutants may be the dominant risk factor in personal exposure due to the fact that most people spend an average of 80% of their time in enclosed buildings. Researches for improvement of indoor air quality have been developed such as installation of air cleaning device, ventilation system, titanium dioxide$(TiO_2)$ coating and so on. However, it is difficult to evaluate the magnitude of improvement of indoor air quality in field study because indoor air quality can be affected by source generation, outdoor air level, ventilation, decay by reaction, temperature, humidity, mixing condition and so on. In this study, evaluation of reduction of formaldehyde and nitrogen dioxide emission rate in indoor environments by $TiO_2$ coating material was carried out using mass balance model in indoor environment. we proposed the evaluation method of magnitude of improvement in indoor air quality, considering outdoor level and ventilation. Since simple indoor concentration measurements could not properly evaluate the indoor air quality, outdoor level and ventilation should be considered when evaluate the indoor net quality.

Evaluation of Indoor Air Quality Improvement by Formaldehyde Emission Rate in School Indoor Environment Using Mass Balance (물질수지를 이용한 학교 실내환경의 포름알데히드(HCHO) 배출량 산정에 의한 실내공기질 개선 평가)

  • Yang, Won-Ho;Son, Bu-Soon;Kim, Dae-Won;Kim, Young-Hee;Byeon, Jae-Cheol;Jung, Soon-won
    • Journal of Korean Society of Occupational and Environmental Hygiene
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    • v.15 no.3
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    • pp.160-165
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    • 2005
  • Schools have significant and serious indoor environmental health problem, of which indoor air quality (IAQ) in school building may affect the health of the students and indirectly affect learning performance. Schools are of special concern when regarding indoor exposure to air pollutants, because students are particularly sensitive to pollutants and spend a significant amount of time in that environment. Therefore researches for improvement of indoor air quality have been developed such as installation of air cleaning device, ventilation system, titanium dioxide(TiO2) coating and so on. However, it is difficult to evaluate the magnitude of improvement of indoor air quality in field study because indoor air quality can be affected by source generation, outdoor air level, ventilation, decay by reaction, temperature, humidity, mixing condition and so on. In this study, evaluation of reduction of formaldehyde emission rate in school indoor environments by far-Infrared ray coating material was carried out using mass balance model in indoor environment. we proposed the evaluation method of magnitude of improvement in indoor air quality, considering outdoor level and ventilation. Since simple indoor concentration measurements could not properly evaluate the indoor air quality, outdoor level and ventilation should be considered when evaluate the indoor air quality.

Review of PM-related Air Quality Improvement Policies of United States for PM-related Air Quality Improvement of Metropolitan Region in Korea (수도권 미세먼지 환경 개선을 위한 미국의 대기환경정책 사례 조사 연구)

  • Woo, Jung-Hun
    • Journal of Korean Society for Atmospheric Environment
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    • v.25 no.6
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    • pp.579-593
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    • 2009
  • Several fine particle-related policies in Northeast United States were investigated in support of the execution of special measures to improve air quality of Seoul Metropolitan Area (SMA). The definition of particulate matter (PM) in the Clean Air Act (CAA), components and procedures of Regional Haze Rule (RHR), and Air Quality Management (AQM) were reviewed. Several State Implementation Plans (SIPs) were also reviewed as the way to attain required air quality under the Clean Air Act. $PM_{2.5}$ attainment SIP of Maryland, 8-hr Ozone attainment SIP of New Jersey, and Regional Haze Rule attainment SIP of MANE-VU were analyzed in detail as case studies. We realized that "Special Measures for Air Quality Improvement in the Seoul Metropolitan Area" has many similarities with its US counterparts in terms of purpose, components, procedures, and implementation methods. US policies, however, have more advanced features, such as standardized procedures and methods, transparent guidelines, and stable relationship among federal/state/local governments and stakeholders, which would be helpful to improve air quality in SMA.

Critical Evaluation of and Suggestions for a Comprehensive Project Based on the Special Act on Seoul Metropolitan Air Quality Improvement (수도권 대기환경 개선사업-진단과 제언)

  • Baek, Sung-Ok;Koo, Youn-Seo
    • Journal of Korean Society for Atmospheric Environment
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    • v.24 no.1
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    • pp.108-121
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    • 2008
  • On January 1, 2005, the Korean Ministry of Environment put into operation a comprehensive program, so called 'Blue Sky 21' project, for the improvement of air quality in greater Seoul metropolitan area. This program was legally based on the 'Special Act on Metropolitan Air Quality Improvement' for Greater Seoul area, which was established in 2003, and should be updated every 10 years. The principal objective of this program is to improve the air quality in Seoul and surrounding area by 2014 to the levels of air quality in Tokyo and Paris, with particular emphases on reducing the concentrations of nitrogen dioxide and $PM_{10}$. Any regulation of the emission of toxic air pollutants in general, and $NO_2$ and $PM_{10}$ in particular, should be based on human exposure levels and consequential health effects. In this article, the contents and feasibility of the special program were critically evaluated with respect to the reduction of health risks. Important issues for improving not only air quality but public health are discussed, and future requirements for the success of the special program are suggested.

A Study on Indoor Air-quality Improvement System Using Actuator (선형엑츄에이터를 이용한 실내 공기질 개선 시스템에 대한 연구)

  • Seo, Do-Won;Yoon, Keun-Young
    • The Journal of the Korea institute of electronic communication sciences
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    • v.16 no.1
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    • pp.183-190
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    • 2021
  • This study is a study on the implementation and operation of smart air cleaning system to improve indoor air quality. Recently, the problem of indoor air quality is getting serious due to various environmental factors. In this study, to improve the problems of indoor air quality, we implement an air cleaning system using IoT sensor. In particular, we proposed a system that can measure air pollution in real time and change different air flow paths according to pollution level. Through this, we examined efficient air quality improvement, extension of filter life, and system energy reduction. In addition, the main functions of the indoor air quality improvement system were constructed and prototypes were manufactured to confirm the operability. Finally, the utility of fine dust resolution through the implementation of the indoor air quality improvement system was examined.

Evaluation on the Effect of Air Quality Improvement Due to the Employment of Clean-Road System in Daegu (대구의 클린로드 시스템 운영에 따른 대기 질 개선효과 평가)

  • Kim, Sung-Rak;Jung, Eung-Ho;Kim, Hae-Dong
    • Journal of Environmental Science International
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    • v.23 no.12
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    • pp.2029-2034
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    • 2014
  • To improve air quality around a broad way, Daegu Metropolitan city employed the clean-road system at a part of the broad way of Dalgubul (Daigubul-daero) in 2011. The clean-road system in general is operated two times (4 am, 2 pm) during summertime. In case of scorching alert, the system is operated 3 times a day (4 am, 2 pm and 4 pm). To evaluate the effect of air quality improvement due to the system, we analyzed the time variation of monthly mean particulate matter (PM10) concentration in recent 3 years (2011-2013). The improvement of air quality was estimated at about 5~15 % under the system.

A Study on the using of the Ventilation System as the Method of Improvement of Air Quality in the Schools (학교건물의 공기질 개선을 위한 환기시스템 적용에 관한 연구)

  • Ahn, Chul-Lin;Kim, Jwa-Jin;Kum, Jong-Soo;Park, Hyo-Soon
    • Journal of the Korean Institute of Educational Facilities
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    • v.11 no.2
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    • pp.17-23
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    • 2004
  • The purpose of this study concerns the improvement of air quality in school classrooms. Polluted indoor air is improved by efficient ventilation systems. So it is important to measure the amount of ventilation needed in classrooms. First, the amount of natural ventilation were measured through a tracer gas method. And we have established a heat recovery ventilation system from 4 cases of airflow in classrooms, and we have measured the change of $CO_2$ density. According to air quality measurements in the classrooms, the density of $CO_2$ is well above environmental standards which are acceptable. When the amount of ventilated airflow increases, indoor air quality is improved. It is surveyed that the most suitable amount of external inducted air is 770 CMH to satisfy $CO_2$ less than 1,000 ppm in classrooms. For improvement of air quality in classrooms, we must consider a suitable ventilation plan and installation of ventilation systems when constructing school buildings.

Analysis of Air Quality and the Management Plan for Exposure to Hazardous Substances in the Garage of a Fire Station (소방청사 차고지 공기질 분석 및 유해물질 노출 관리 방안)

  • Park, Je-Seop;Han, Dong-Hun
    • Journal of Korean Society of Occupational and Environmental Hygiene
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    • v.30 no.4
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    • pp.394-404
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    • 2020
  • Objectives: The aims of this study are to derive the characteristics of diesel exhaust gas emissions generated during vehicle checking in the garage of fire stations and of the related improvement plans for proper air quality management. Methods: The researcher measured changes in the air quality inside garages according to the operating conditions of the exhaust facility and before and after vehicle checking at three fire stations. Results: During the checking of fire engines, a large volume of hazardous substances exceeding management standards were generated, and improvement of the discharge facilities was required for proper air quality management. Conclusions: It is necessary to study the hazard evaluation of firefighters' exposure to exhaust gas, to operate exhaust gas ventilation facilities, and to prepare technical standards for proper indoor air quality management.

Study of the Air Quality Mapping Using GIS (GIS를 활용한 대기오염분포도 작성에 관한 연구)

  • 최병길;라영우
    • Proceedings of the Korean Society of Surveying, Geodesy, Photogrammetry, and Cartography Conference
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    • 2003.04a
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    • pp.415-420
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    • 2003
  • GIS technique was applied to the analysis of ambient air quality information. For this study, the air quality information was imported with the geographical information in Capital Area. This study well proves that GIS technique has a great deal of potential to analyze those air quality information, to produce useful information, and to ease the efforts for air quality improvement. Concerning about the data interpolation, the discrepancy caused by applying different method was ignorable, although Kriging method is further developed.

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