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Pure Air for Education Teachers' associations, students and parents are urging that schools be equipped with Covid-19 safe equipment including air purification systems.

PROTECTION AGAINST AIRBORNE TRANSMISSION OF CORONAVIRUSES AND BACTERIA IN SCHOOLS, UNIVERSITIES AND NURSERIES

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Wherever children and young people come together, life and action are guaranteed. Recommendations and regulations for disinfecting hands and surfaces, which have come into force since the Covid-19 epidemic reduce the potential of virus transmission but, unfortunately, do not entirely eliminate it. Eco-IS provides solutions to help schools reduce the exposure of children and staff to the unnecessary risk of infections and viruses.

There are numerous protection measures that can contribute to safe schooling post-SARS-CoV-2 pandemic, and can continue to be used to combat other infectious viruses, as well as permanently removing fine dust and pollen from the air in order to protect allergy sufferers and general health.

Professional air purifiers with modern filter systems and improved HEPA protection filter all of the air we breathe in classrooms and day-care rooms up to 5 times an hour and reliably neutralise germs and viruses.

Even without Covid-19, clean indoor air is essential in environments such as schools, universities, kindergartens and nurseries, but virus-free indoor air is even more important during this challenging pandemic. Hygiene concepts in educational settings and teaching institutions require the wearing of masks to prevent the spread of aerosols, which can make learning together in a smaller room uncomfortable.

In addition to a smear and droplet infection risk, airborne transmission is coming into focus. These particles can stay in the air for a long time, reducing the effectiveness of distancing policies. While this is not as problematic outdoors due to air drift, the risk of infection increases in closed rooms. With many children struggling with social distancing measures, you can see why this can be problematic.

As mask usage has been phased out and we are expected to live with the virus, what can we do to minimise its impact?

Eco Industry Solutions want to make reliable air filtration accessible so that learning in classrooms and lecture theatres is restricted as little as possible. In day-care centres and nurseries in particular, there is an increased risk of infection by viruses, as many children spend long periods of time in closed rooms. Any parent will know how quickly coughs and sneezes spread.

Looking further into the future, investing in air cleaning units means that no matter how long SARS-CoV-2 remains, these can be used in the future to combat other infectious diseases, but also to continuously remove fine dust and pollen from the indoor air.

THE RIGHT TO BREATHE CLEAN AIR.

Children have the right to protection and care by their parents and their school. The welfare of the child must also be given priority in accordance with Article 3 of the UN Convention on the Rights of the Child. Eco Industry Solutions are working with educational establishments across the UK to help ensure that every attempt is made to provide clean air zones in educational settings.

Scientists from the Institute for Fluid Mechanics and Aerodynamics at the University of the German Armed Forces have examined the ventilation concept. They concluded that the possibility of reducing the viral load in the classroom through regular brief ventilation is greatly overestimated. The study was published in preprint.

From a physical point of view, natural ventilation only makes sense if there is a large temperature difference between inside and outside or if it is quite windy outside, according to Munich scientists. If this is not the case, it would take a long time to carry out an air exchange – 3 to 5 minutes – which is by no means sufficient.
Natural ventilation may be easy to implement during the warmer seasons by simply having the windows permanently open, but this isn’t securing maximum safety against direct infection. It’s also seen as unsafe, uncomfortable for children and economically and ecologically questionable – certainly not a sufficient long term option.

BRIEF VENTILATION IS NOT ENOUGH TO REDUCE THE VIRAL LOAD

Scientists from the Institute for Fluid Mechanics and Aerodynamics at the University of the German Armed Forces have examined the ventilation concept. They concluded that the possibility of reducing the viral load in the classroom through regular brief ventilation is greatly overestimated. The study was published in preprint.

From a physical point of view, ventilation only makes sense if there is a large temperature difference between inside and outside or if it is quite windy outside, according to Munich scientists. If this is not the case, it would take a long time to carry out an air exchange – 3 to 5 minutes – which is by no means sufficient.

In addition, continuous ventilation is not a good option, especially in winter. With open windows, the viruses that cause colds may spread more easily in lower temperatures leading to more infections for teachers and students.

The German scientists recommend the use of highly efficient room air purifiers in addition to intermittent ventilation. An air purifier draws in the ambient air via a fan that is as large as possible and directs it into the interior of the air purifier where it is cleaned by filters. The air is then released cleanly and safely back into the room.

STUDY WITH A FULLY OCCUPIED CLASSROOM

Most of the experiments with room air purifiers so far have taken place with dummies instead of real people. How well the devices work in crowded classrooms with up to 30 people sitting had not been investigated. A study by the University of Frankfurt closed this gap.

For a week, Frankfurt atmospheric researchers tested four air purifiers in a school classroom with teachers and 27 students. The result: 30 minutes after switching on, an air purifier had removed 90 per cent of the aerosols from the air.

The risk of infection can be significantly reduced, and the study leader stated that this significantly reduces the risk of infection from a highly infectious person in the classroom – a super spreader. 
“That is why we recommend the schools this winter to use HEPA air purifiers with a sufficiently high air throughput.” Joachim Curtius from the experimental atmospheric research group at the Goethe University in Frankfurt advised. Link: Testing mobile air purifiers in a school classroom: Reducing the airborne transmission risk for SARS-CoV-2

The study also recognises that airborne transmission of SARS-CoV-2 through virus-containing aerosol particles has been established as an important pathway for Covid-19 infection – you can view the full article via the link above.

“Measurements and calculation demonstrate that air purifiers represent a well-suited measure to reduce the risks of airborne transmission of SARS-CoV-2 substantially.”

"...that is why we recommend the schools this winter to use HEPA air purifiers with a sufficiently high air throughput."

Joachim Curtius


Experimental atmospheric research group at the Goethe University in Frankfurt

HIGH-PERFORMANCE AIR PURIFICATION HELPS CREATE SAFER AIR IN EDUCATIONAL SPACES.

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If the air space is kept free from germs and also viruses, the airborne danger of transmission will be reduced. Our high-frequency air cleaning solutions, such as the TAC V+, are specifically created to help execute this work.

They operate efficiently in addition to quickly minimising the intensity and the time that aerosol accumulations are suspended in the air in enclosed areas, helping to create an education and learning facility with an extraordinarily reduced threat of infection for both teachers and students.

Directly at its point of installation, the mobile air cleaner TAC V+ creates a ‘Clean air zone’, filled with cleansed air filtered from viruses. Within this zone, the surrounding air almost totally remains devoid of airborne bacteria as well as viruses because the TAC V+ absorbs large quantities of polluted room air while performing effective H14 HEPA high-performance air filtration. In addition, the equipment purifies room air zones in an adjustable way with clean air that has been filtered from viruses and also aerosol particles.

References :

The United Nations Convention on the Rights of the Child: How legislation underpins implementation in England

Case Study: Effective aerosol and virus filtration of the room air After the Corona infections

School education during the SARS-CoV-2 pandemic – Which concept is safe, feasible and environmentally sound?

Unions condemn government treatment of school and college leaders

AIR PURIFICATION SOLUTIONS

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