- phosphorus (Phosphorus) will result in the growth of the plant quickly cause problems with unusual sources of water
.- Sulfur (Sulfur) there will be a reaction to heavy metal in the water will cause the water is black and there is a change of form elements, substances corrosive pipes and machinery used in the Wastewater Treatment
- heavy metal (Heavy Metals) if there is some amount of heavy metal too may affect organisms and may be harmful to human beings, and if you take it in the water consumption
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