Air quality in school/ air puficiation for school/ air purifier for school - RHT
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Air quality in school

Education is a fundamental human right which shared by the majority of the world’s population. School is a place where students develop in more ways than just academically. Studies have shown that air quality is directly related to human health, so school air quality is also related to brain development, therefore more and more schools are now installing air purification systems.

During the epidemic, schools have become the places for the spread of viruses and diseases, therefore enhancing health and safety of students is also the responsibility of education providers. Installation of school air purification system is crucial in order to provide students with a free and safe space to learn and develop.

Common causes of deteriorating air quality in schools

There are several factors that contributed to degraded air quality in schools: penetration of outdoor pollution, chemicals in cleaning products, etc., and the lack of use of air purifiers in schools.

Penetration of outdoor pollution: In Hong Kong, most schools are located next to or near roads, while schools in densely populated areas are adjacent to busy roads with thousands of vehicles passing by each day. This is obviously likely to create air pollutants that can linger in the air and end up in nearby buildings including schools, and lead to a decline in air quality which makes school air purifiers even more important. Some ceiling-type air purification systems are very suitable for school use, they do not need to change the original air ducts, can be installed on the ceiling as additional devices and are flexible and suitable for various situations use.

For more information and further assistance, please consult our consultant to design a suitable solution for you.

Frequently Asked Questions – air purification system in school:

1. How is the air quality in most of the school?

Air pollutants that persist in schools include carbon dioxide (CO2), carbon monoxide (CO), total hydrocarbons (THC), formaldehyde (HCHO), particulate matter (PM10) and bacteria, among other biological pollutants.

Below is a partial summary of a study conducted in Hong Kong to investigate air quality in schools:

“Five classrooms in Hong Kong (HK) with air conditioning or ceiling fans (school air purifiers) ventilation were selected for indoor and outdoor air quality surveys: temperature, relative humidity (RH), carbon dioxide (CO2), sulfur dioxide (SO2), a Parameters such as nitrogen oxide (NO), nitrogen dioxide (NO2), inhalable particulate matter (PM10), formaldehyde (HCHO) and total bacteria were monitored and counted both indoors and outdoors. The average concentration of inhalable particulate matter was higher than the target, and indoor PM10 was the highest Levels in excess of 1000 µg/m3. Air-conditioned and ceiling fan classrooms often have indoor CO2 concentrations in excess of 1000 µl/l, indicating insufficient ventilation.”

2. Why NCCO air purification system is better than traditional air purifier in school?

Comparing with traditional air treatment systems, such as those using activated carbon technology, there are several reasons why NCCO technology are superior, one of the main reasons is that activated carbon systems would generate secondary pollution, when the absorption capacity is reached, the pollutants absorbed by the activated carbon are released into the air. Since NCCO air treatment technology focuses on adsorption and decomposition, not just adsorption of pollutants, there is no secondary pollution problem. Another reason is the longevity of NCCO filter, which can last up to 12 years with proper use. In contrast, activated carbon filters have a very short lifespan, only around 3 to 5 months. Such a short lifespan means that filters need to be replaced frequently, adding to the financial and environmental costs of using activated carbon for air purification,which make NCCO air purification system an obvious choice.