Class 7 wastewater story notes
Questions covered are 1. What is wastewater? 2. Why is clean water important? 3. What is sewage? Table 1: Common Contaminants in Sewage Type of Impurity Examples Organic Impurities Human and animal waste, oil, pesticides, food waste Inorganic Impurities Nitrates, phosphates, heavy metals (lead, mercury) Nutrients Phosphorus, nitrogen (from fertilizers)…