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Types of Settling in Sedimentation
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Types of Settling in Sedimentation

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Questions and Answers

What is the moisture content in dewatered sludge, according to the text?

  • 10 percent
  • 70 percent (correct)
  • 50 percent
  • 90 percent

    • Why is sludge not spread on land where crops are grown for human consumption?

  • It may contain toxic industrial chemicals (correct)
  • It contains inert ash
  • It evaporates the moisture completely
  • It behaves as a liquid

    • What process converts organic solids in sludge into inert ash?

  • Dewatering
  • Incineration (correct)
  • Spreading on agricultural land
  • Burying in landfill

    • Why is air pollution control crucial when sewage sludge is incinerated?

    <p>To prevent harmful emissions</p> Signup and view all the answers

    Where may sludge be disposed of if a suitable site for land disposal is not available?

    <p>Incinerated</p> Signup and view all the answers

    What is the primary purpose of thickening in sludge treatment?

    <p>To reduce the total mass of solids in the sludge</p> Signup and view all the answers

    Why is digestion an important step in sludge treatment?

    <p>To transform organic solids into stable substances and destroy pathogens</p> Signup and view all the answers

    Which method helps in reducing pollution and public health risks associated with sludge disposal?

    <p>Dewatering</p> Signup and view all the answers

    How does proper sludge treatment benefit local communities according to the text?

    <p>By enhancing job opportunities in eco-tourism</p> Signup and view all the answers

    What is the ultimate goal of sludge treatment and disposal processes?

    <p>To prevent environmental pollution and public health risks</p> Signup and view all the answers

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