Ever heard about natural water treatment plant?
Yes !it exist. There exists a plant which acts as a natural water treatment plant. Have you ever heard about the plant Canna Indica, which is called as "Kal Vaazhai" (கல்வாà®´ை) in tamil. Yes !it acts as a natural water purifier. It turns the grey water into good water. It absorbs nitrates and phosphates present in the sewage water. The kal vazhai absorbs heavy metals such as aluminium, iron, and phosphorous and their compounds. HOW TO CLEAN WATER USING KAL VAAZHAI? h It is very simple to make use of kal vaazhai for water treatment. At first we need to make a bed of kalvaazhai in a particular area of land. Then the grey water is allowed to pass through the kalvaazhai bed. When the grey water is allowed to pass through the bed the plant absorbs all the heavy metals and minerals present in the water. After absorption the excess water it allowed to come through another side. It is very amazing fact that the resultant water given at l...