Given below is a jumbled sequence of the processes involved in a wastewater treatment plant. Arrange them in their correct sequence. |
(i) Sludge is scrapped out and skimmer removes the floating grease |
(ii) Water is made to settle in a large tank with a slope in the middle |
(iii) Large objects like plastic bags are removed by passing wastewater through bar screens |
(iv) Sand, grit and pebbles are made to settle by decreasing the speed of incoming wastewater |
(v) Wastewater enters a grit and sand removal tank |
A) ii, v, iv, iii, I
B) iii, v, iv, ii, i
C) v, iv, ii, i, iii
D) iv, ii, v, iii, i,
E) None of these
Correct Answer: B
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