HOW TO PURIFY WATER?
As standard, the pH of water for domestic use is 6.0 to 8.5, and of drinking water is 6.5 to 8.5.
- Layer 1: Water took from rivers, lakes...
- Layer 2: 30cm of clean sand.
- Layer 3: 30cm of activated carbon
- Layer 4: 10cm of sand
- Layer 5: 10cm of soils
- Last part: A water pipe to transfer clean water into a clean water tub