other DIY filters
As part of EauPropre I ProperWater the low tech water purification system would be connected to the rain harvesting pavilion. This led to some technical specification: the system had to be mobile and compact, had to work with changing flow rates, and be able to filter rain-water at the simple request of passers-by/visitors, without having to make them wait too long.
Therefore (and much to our regret) the following plans had to be abandoned. These methods were too slow, too uncertain or required electricity or constant care.
We decided to list them here below, just for the fun of it:
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