This article throws light upon the nine main types of harmful effluents discharged from industries. The types are: 1. Acids 2. Discharge of Nitrogen Dioxide 3. Alkalies 4. Pesticides 5. Toxic Chemical 6. Fluorides 7. Toxic Metals 8. Fertilizers 9. Oil. Harmful Effluent # 1. Acids: Various acid manufacture industries discharge acidic effluent which not […]