A Study on How to Kill Airborne Bacteria and Viruses in Elementary Schools

doi:10.15683/kosdi.2022.9.30.566

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2022 Vol.18, Issue 3 Preview Page Next Page

Original Article

A Study on How to Kill Airborne Bacteria and Viruses in Elementary Schools 초등학교내 공기중 부유세균 및 바이러스 사멸방법에 대한 연구: 이수연¹ㆍ김창수²*ㆍ곽은미³ㆍ임종언⁴ㆍ전재환⁵ㆍ권준호⁶
Su Yeon Lee¹, Chang Soo Kim²*, Eun Mi Kwak³, Jong Eon Im⁴, Jae Hwan Jeon⁵, Jun Ho Kwon⁶; ¹CEO, JRTech Co., Ltd, Ulsan, Republic of Korea
²Full Professor, Division of Computer Engineering ans AI, Pukyong National University, Busan, Republic of Korea
³Assistant Research Engineer, JRTech Co., Ltd, Ulsan, Republic of Korea
⁴Senior Research Engineer, JRTech Co., Ltd, Ulsan, Republic of Korea
⁵Research Director, JRTech Co., Ltd, Ulsan, Republic of Korea
⁶Planning Director, JRTech Co., Ltd, Ulsan, Republic of Korea

30 September 2022. pp. 566-573

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Abstract

Purpose: This study attempted to verify the effectiveness of the application of air sterilizers in elementary schools at risk of group infection among vulnerable groups in order to address fears of new infectious diseases that have increased since the outbreak of Middle East Respiratory Syndrome (MERS) and Coronavirus infection-19 (COVID-19). Method: One air sterilizer was installed in each classroom, cafeteria, and bathroom of an elementary school in Seoul, and surface and air samples were collected at a distance of 2m from the air sterilizer, and the bacterial reduction effect was analyzed compared to the uninstalled control group. Result: The sterilization effect on the surface was less than 2log CFU/㎠ in both the control group and the test group, and the test group showed 54 to 87% less general bacterial colony formation than the control group. In addition, the sterilization effect in the air differed depending on the location of the air sterilizer, and the wall installation showed a reduction effect of up to 91% compared to the control group, and the central installation showed a reduction effect of up to 93%. Conclusion: As a result of the study, it is expected that the prevention of infectious diseases can be increased by maintaining the current quarantine program in elementary schools that conduct regular disinfection while applying air sterilizers. In addition, it is considered desirable to facilitate the inflow of air into the air sterilizer.

Keywords

Emerging Infectious Diseases

Infection Vulnerable Class

Dielectric Barrier Discharge

Air Sterilizer

Prevention of Spread of Infectious Diseases

Airborne Bacteria

Plasma

Mass Infection

연구목적: 본 연구는 중동호흡기증후군(MERS) 및 코로나바이러스 감염증-19(코로나19)의 국내 유행 이후 늘어난 신종 감염병에 대한 두려움을 해소하기 위하여, 감염취약계층의 집단감염 위험이 있는 초등학교에서 공기살균기 적용에 따른 공기살균효과를 검증하고자 하였다. 연구방법: 서울시 소재의 초등학교의 교실 및 급식실, 화장실에 공기살균기를 각 1대씩 설치하고 공기살균기와 2m 떨어진 거리에서 표면 및 공기 시료를 채취하여 미설치 대조군과 비교하여 세균저감 효과를 분석하였다. 연구결과: 표면에서의 살균효과는 대조군 및 시험군 모두 2log CFU/㎠미만의 결과가 나왔으며, 대조군에 비해 시험군이 54~87% 저감효과가 있는 것으로 나타났다. 또한 공기 중에서의 살균효과는 공기살균기 설치 위치에 따라 살균능력이 차이 났으며, 벽면 설치는 대조군에 비해 최대 91%의 저감 효과를 보였으며, 중앙 설치는 최대 93%의 저감 효과를 보였다. 결론: 연구결과 상시적인 소독을 진행하는 초등학교에서 현재의 방역프로그램을 유지하는 한편 공기살균기의 적용하여 상시적인 공기살균을 병행하면 감염병 전파 방지에 상승효과를 볼 수 있을 것으로 보인다. 또한 공기살균기로의 공기유입이 원활할 수 있도록 하는 것이 바람직할 것으로 사료된다.

키워드

신종감염병

감염취약계층

유전체장벽방전

공기살균기

감염병 전파 방지

부유세균

플라즈마

집단감염

References

Gyeongsangnamdo Office of Education (2020). STOP Corona 19 Infection Prevention Management Guidebook. [2020-071]
Ham, S.H. (2020). "Prevention of exposure to and spread of COVID-19 using air purifiers: challenges and concerns." Epidemiology and Health, Vol. 42 pp. 1-3. 10.4178/epih.e2020027 32311865 PMC7340613
Jang, G.H. (2008). Analysis of the Indoor Air Pollutions and Improvement of the Indoor Air Quality with a Cold Plasma-Hydroxyl Radical. Master's Thesis, Yonsei University.
Jeon, B.H (2015). "Concentrations of total culturable microorganisms and Its identification in public facilities." Journal of the Korea Academia-Industrial cooperation Society, Vol. 16, No. 1, pp. 868-876. 10.5762/KAIS.2015.16.1.868
Jo, S.G. (2016). "Infectious diseases and health security in the 21th century: A focus on national security." Policy Study, No. 185, pp. 83-115.
Jun, B.Y. (2009). "Trends and prospects of infectious diseases." Korea Tourism Policy, No. 38, pp. 34-41.
Kim, J.H. (2022). ""One out of two 0-9 years old confirmed"... 'War' from house to house due to the explosion of childhood infections." NEWSIS, 2022.04.10., https://newsis.com/view/?id=NISX20220408_0001826441&cID=10201&pID=10200.
Korea Disease Control and Prevention Agency (2022). "Latest updates in coronavirus dis- ease-19, Republic of Korea." [cited 2022 May 2], Available from: http://ncov.mohw.go.kr/.
Ministry of Education (2021). Guidelines for COVID-19 Infection Prevention Management in Preschool, Elementary, Secondary, and Special Schools. [5-2 edition].
Park, S.J. (2020). "Airborne infection risk of respiratory infectious diseases and effectiveness of using filter-embeded mechanical ventilator and infectious source reduction device such as air cleaner." Particle and Aerosol Research, Vol. 16, No. 4, pp. 73-94.
Seon, M.G. (2022). A Study on the System to be equipped by this Medical Institution due to the Current Status of COVID-19 Infectious Disease. Master's Thesis, Department of Health Care Graduate school of Gwangju University.
Shin, H.W. (2022). Evaluation on Airborne Infection Risk according to Operation of Floor Standing Type Mechanical Ventilation System in a Classroom. Master's Thesis, Graduate School University of Seoul.
Yoon, S.H. (2020). "Identifying regional characteristics faxtors affecting the number of tuberculosis death - The comparative analysis between urban and rural areas -." Journal of the Society of Disaster Information Vol. 16, No. 3, pp. 513-525.
Yu, Y.G. (2020). "Air purifier will prevent COVID-19?The risk of proliferation is greater in the experiment." SBS NEWS, 2020.04.29., https://news.sbs.co.kr/news/endPage.do?news_id=N1005767612.

Information

Publisher :The Korean Society of Disaster Information
Publisher(Ko) :한국재난정보학회
Journal Title :Journal of the Society of Disaster Information
Journal Title(Ko) :한국재난정보학회논문집
Volume : 18
No :3
Pages :566-573
DOI :https://doi.org/10.15683/kosdi.2022.9.30.566

[1] Gyeongsangnamdo Office of Education (2020). STOP Corona 19 Infection Prevention Management Guidebook. [2020-071]

[2] Ham, S.H. (2020). "Prevention of exposure to and spread of COVID-19 using air purifiers: challenges and concerns." Epidemiology and Health, Vol. 42 pp. 1-3. 10.4178/epih.e2020027 32311865 PMC7340613

[3] Jang, G.H. (2008). Analysis of the Indoor Air Pollutions and Improvement of the Indoor Air Quality with a Cold Plasma-Hydroxyl Radical. Master's Thesis, Yonsei University.

[4] Jeon, B.H (2015). "Concentrations of total culturable microorganisms and Its identification in public facilities." Journal of the Korea Academia-Industrial cooperation Society, Vol. 16, No. 1, pp. 868-876. 10.5762/KAIS.2015.16.1.868

[5] Jo, S.G. (2016). "Infectious diseases and health security in the 21th century: A focus on national security." Policy Study, No. 185, pp. 83-115.

[6] Jun, B.Y. (2009). "Trends and prospects of infectious diseases." Korea Tourism Policy, No. 38, pp. 34-41.

[7] Kim, J.H. (2022). ""One out of two 0-9 years old confirmed"... 'War' from house to house due to the explosion of childhood infections." NEWSIS, 2022.04.10., https://newsis.com/view/?id=NISX20220408_0001826441&cID=10201&pID=10200.

[8] Korea Disease Control and Prevention Agency (2022). "Latest updates in coronavirus dis- ease-19, Republic of Korea." [cited 2022 May 2], Available from: http://ncov.mohw.go.kr/.

[9] Ministry of Education (2021). Guidelines for COVID-19 Infection Prevention Management in Preschool, Elementary, Secondary, and Special Schools. [5-2 edition].

[10] Park, S.J. (2020). "Airborne infection risk of respiratory infectious diseases and effectiveness of using filter-embeded mechanical ventilator and infectious source reduction device such as air cleaner." Particle and Aerosol Research, Vol. 16, No. 4, pp. 73-94.

[11] Seon, M.G. (2022). A Study on the System to be equipped by this Medical Institution due to the Current Status of COVID-19 Infectious Disease. Master's Thesis, Department of Health Care Graduate school of Gwangju University.

[12] Shin, H.W. (2022). Evaluation on Airborne Infection Risk according to Operation of Floor Standing Type Mechanical Ventilation System in a Classroom. Master's Thesis, Graduate School University of Seoul.

[13] Yoon, S.H. (2020). "Identifying regional characteristics faxtors affecting the number of tuberculosis death - The comparative analysis between urban and rural areas -." Journal of the Society of Disaster Information Vol. 16, No. 3, pp. 513-525.

[14] Yu, Y.G. (2020). "Air purifier will prevent COVID-19?The risk of proliferation is greater in the experiment." SBS NEWS, 2020.04.29., https://news.sbs.co.kr/news/endPage.do?news_id=N1005767612.

Journal of the Society of Disaster Information ISSN:1976-2208(Print) 2671-5287(Online) 한국재난정보학회논문집

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