Processing rainwater into drinking water
Water is becoming increasingly scarce and also more and more expensive. For this reason, the idea of turning rainwater into drinking water often comes up. With a few tips, it actually works.
What you need:
- Filter systems (ultrafiltration)
What to look for when collecting rainwater
- In order to be able to make drinking water from rainwater, the rainwater must first be collected. Usually this happens over the roof of the house and the gutter directs it water then in a cistern or in a large vat.
- This causes dirt such as leaves, bird droppings, insects, etc. gets into the rainwater. To prevent this from happening, the gutter should first get a filter that will keep out the greatest dirt.
- But this is not enough to turn rainwater into drinking water. Therefore, the cistern or the vat should be provided with a smaller filter again
The collected water becomes drinking water
- A filter system, ideally an ultrafiltration system, must be connected so that the pre-filtered rainwater can be turned into drinking water.
- Such an ultrafiltration consists of - as a rule - three downstream filters. The smallest filter unit has pores of 20 nanometers, so that in fact all bacteria and viruses are eliminated
- The filter system lets the rainwater shoot through the filter system at a pressure of 2.5 to 3 bar and the filters set in it keep every dirt particle, all bacteria and viruses step by step away.
- If you don't trust ultrafiltration alone, you can also install a UV-C system. These waves of sunlight are also able to kill bacteria.
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