There is a rainforest at Midlanda Airport.

A living filter is a product that cleans the air naturally by converting carbon dioxide to oxygen.

The filter itself consists of green plants, soil and water. Basically a miniature rainforest. Copying the strongest life-giving force in nature results in a number of things. Energy is saved, the air is purified and the indoor climate is more pleasant and healthier.

Twice an hour, the plants are sprayed with water, thus creating an even flow of purification. In practice, the filter works on its own. Every four weeks, it requires attention. The plants are checked and pruned.

At Midlanda Airport, the pleasant climate is obvious. Although the terminal also has a traditional, old-fashioned system for ventilation, it does not need to be used. The plants work silently.

The air circulates in the terminal and has a cooling effect in the summer and a heating effect in the winter. In combination with a living filter, they are a cycle that keeps on working.

Another advantage is that bacteria and particles are dealt with much better in the natural cycle. The result is an environment in which infections are not spread as easily. There are also less dust and fewer allergenic particles.