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Total Questions : 74 | Page 8 of 8 pages
Question 71. What is the thickened concentration of the trickling filter sludge?
  1.    3-6%
  2.    1-3%
  3.    6-9%
  4.    0.5%
 Discuss Question
Answer: Option A. -> 3-6%
Answer: (a).3-6%
Question 72. What is the thickened concentration of the thickened sludge from the rotating biological contractor?
  1.    1-2%
  2.    3-5%
  3.    5-7%
  4.    7-9%
 Discuss Question
Answer: Option B. -> 3-5%
Answer: (b).3-5%
Question 73. What is the thickened concentration of air activated sludge?
  1.    1%
  2.    5%
  3.    2-3%
  4.    3-6%
 Discuss Question
Answer: Option C. -> 2-3%
Answer: (c).2-3%
Question 74. What is the thickened concentration of extended aeration sludge?
  1.    1%
  2.    2-3%
  3.    5%
  4.    5-7%
 Discuss Question
Answer: Option B. -> 2-3%
Answer: (b).2-3%

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