Page 5 - Energy Recovery Ventilation

Air Pollution in Educational Facilities and Other Multi-Use Facilities

Indoor Air Quality Survey by the Ministry of Environment (2016)
▶ Investigating Agencies Ministry of Environment, National Institute of Environmental Research, Regional Environmental Offices
▶ Survey Targets Measurement of 2,136 out of 19,802 multi-use facilities nationwide
▶ Investigation Substances Formaldehyde, fine dust (PM10), carbon dioxide, carbon monoxide, total suspended bacteria
▶ Indoor Air Quality Maintenance Standards (Annex 2:Article 3)

Airborne Pollutants PM10 CO₂ HCHO Total Suspended Bacteria CO
Multi-Use Facilities (µg/m3) (ppm) (µg/m3) (CFU/m3)* (ppm)
Underground facilities, terminals, stations, airport facilities, port 150 or less -
facilities, libraries, museums, funeral halls, bathhouses, large stores, etc.
10 or less
Medical facilities, childcare centers (daycare facilities), elderly care/ 100 or less 1,000 or less 100 or less 800 or less
specialized hospitals, postpartum care centers, etc.
Indoor parking lots 200 or less - 25 or less
Indoor sports facilities, indoor performance halls, office facilities 200 or less - - - -
*For libraries, cinemas, academies, and PC rooms where natural ventilation is not possible, the carbon dioxide standard is set at 1,500 ppm or lower when using mechanical
ventilation systems.
Investigation vestigation
In
Resultsesults
R

Underground Underground Passenger Cars Airport Facilities Port Facilities Medical Indoor Parking
Category Total Terminal Waiting Passenger Libraries Museums Art Museums
Subways Shopping Malls Rooms Terminals Waiting Rooms Facilities Lots
Target Facilities 14483 537 67 29 17 4 208 98 24 2051 3664
Facilities subject to
Inspection 2576 145 17 3 5 - 26 17 5 566 131
Facilities Exceeding
Standards 206 2 1 - - - 1 1 - 15 -
Exceedance Rate (%) 8 1.4 5.9 - - - 3.8 5.9 - 2.7 -
Public Senior
Underground Educational
Category Subways Large Retail Day Care Centers Funeral Halls Bathhouses Postpartum Movie Theaters Institutions Exhibition Halls PC Rooms
Waiting Rooms Stores Centers Healthcare and Care Centers (Academies)
Welfare Facilities
Target Facilities 31 1,130 4,440 132 140 1,064 265 301 152 26 103
Facilities Under 7 109 1,321 24 15 67 36 60 11 2 9
Inspection
Facilities Exceeding - 4 172 1 - - 5 - 1 1 2
Standards
Exceedance Rate (%) - 3.7 13 4.2 - - 13.9 9.1 50 22.2
7.1% 1.7%
Exceeded the standard Exceeded the standard
in 59 places in 6 places

By facility type, it was found that among the 833 child care facilities,
59 of them (7.1%) exceeded the maintenance standards in the
pollution level tests, and among the 346 medical facilities, 6 of them
(1.7%) exceeded the maintenance standards. Child Care Medical
When categorized by air pollutants, among the 11 cases of fine dust, Facilities Facilities
6 of them were at child care facilities, and among the 58 cases of
total suspended particulates, 55 of these were at child care facilities 833 locations 346 locations
and the rest of 3 were at medical facilities. It appears that child care
facilities have the highest level of contamination, and there is an
urgent need to improve indoor air quality through ventilation systems.

05 ENERGY RECOVERY VENTILATION