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Question

Describe various steps of cleaning wastewater in a wastewater treatment plant.


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Solution

Procedures of Wastewater treatment plant:

  1. Wastewater is filtered using a series of bar screens.
  2. Large things are eliminated, such as rags, sticks, cans, plastic packets, and napkins.
  3. After that, the water is pumped into a grit and sand removal tank.
  4. To allow sand, grit, and stones to settle, the pace of entering wastewater is reduced.
  5. After that, the water is allowed to settle in a big tank with a sloped center.
  6. Solids like feces settle at the bottom and must be scraped away with a scraper.
  7. The sludge is this. A skimmer removes floatable materials such as oil and grease from the water.
  8. Clarified water is a term used to describe water that has been cleaned of impurities.
  9. The sludge is moved to a separate tank where anaerobic microorganisms break down it.
  10. The biogas generated during the process can be utilized as a fuel or to generate energy.
  11. To aid aerobic bacteria growth, the air is introduced into the purified water.
  12. Bacteria eat human waste, food waste, soaps, and other undesired substances that remain in cleared water.
  13. The floating bacteria settle as activated sludge at the bottom of the tank after many hours.
  14. The top layer of water is then removed. water.

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