we know charcoal makes water clean.
Some LGUs in Japan are using charcoal for cleaning river.
however, they need to change charcoal sometimes. Because charcoal collect organic matters inthemselves.
Charcoal is porous inside. It is the reason to clean water.
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aside from that, i learned there is agricultural material made of micro-organism.
They call it AI-chan.
It is used benefitial microorganism. It is like EM.
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If you combine these material to clean river, you can clean river…?
It is just idea.
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water is the most important for life.
If water is durty/pulutaed, it will surely cause of human health.
We really must consider our water. there are already lack of water resources in the world.
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