Water Treatment Methods

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Across
  1. 3. Type of rain that is natural source of pollutants, it is created when gases react with water vapor during thunderstorms
  2. 4. The _______ method also called biological present some aeration that prevents anaerobic decomposition
  3. 6. _______ methods are processes for reducing pollutants in wastewater
  4. 7. The bacterial decomposition of organic matter depletes the water's dissolved _______
  5. 9. Tertiary method where this substance is poured into water removing a large number of pathogens
  6. 13. Type of water pollution caused by microorganisms
  7. 14. Type of water pollution caused by heavy metals, detergents, fertilizers, and pesticides
  8. 15. Classification of water that contains Ca+2, Mg+2, and Fe+2 ions
  9. 17. Classification of water that contains Na+ and K+ ions and is suitable for cooking, washing and bathing
  10. 18. Unpleasant odors and ions present in water come from the ________ of organic matter
Down
  1. 1. It would be the first method for water treatment, it is also called physical
  2. 2. Industries supply to the water a huge variety of pollutants that are mostly highly _______
  3. 5. Phenomenon caused by the presence of nitrate and phosphate ions which serve as nutrients for algae to grow causing lakes and streams to die
  4. 8. Acronym that stands for an index which in high levels do not permit the existence of life in water bodies
  5. 10. Very high cost tertiary method that removes suspended solids
  6. 11. Activated ______ method is a combination of the first two methods
  7. 12. Low cost tertiary method that removes phosphates
  8. 14. Principal source of wastewater produced in Mexico
  9. 16. Phenomenon caused in a tertiary method using activated carbon for removing organic molecules
  10. 19. Type of pollution caused by solid waste produced from human activities