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Test: Conventional Trickling Filter - Civil Engineering (CE) MCQ


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10 Questions MCQ Test Environmental Engineering - Test: Conventional Trickling Filter

Test: Conventional Trickling Filter for Civil Engineering (CE) 2024 is part of Environmental Engineering preparation. The Test: Conventional Trickling Filter questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The Test: Conventional Trickling Filter MCQs are made for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Conventional Trickling Filter below.
Solutions of Test: Conventional Trickling Filter questions in English are available as part of our Environmental Engineering for Civil Engineering (CE) & Test: Conventional Trickling Filter solutions in Hindi for Environmental Engineering course. Download more important topics, notes, lectures and mock test series for Civil Engineering (CE) Exam by signing up for free. Attempt Test: Conventional Trickling Filter | 10 questions in 25 minutes | Mock test for Civil Engineering (CE) preparation | Free important questions MCQ to study Environmental Engineering for Civil Engineering (CE) Exam | Download free PDF with solutions
Test: Conventional Trickling Filter - Question 1

The breaking of the biomass from the slime layer in conventional filter is called _____

Detailed Solution for Test: Conventional Trickling Filter - Question 1

Explanation: The breaking of the biomass from the slime layer in conventional filter is called sloughing. It makes the effluent turbid.

Test: Conventional Trickling Filter - Question 2

The minimum hydraulic loading of percolating filter is 

Detailed Solution for Test: Conventional Trickling Filter - Question 2

Explanation: The minimum hydraulic loading of percolating filter is 1m3/m2/d

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Test: Conventional Trickling Filter - Question 3

Which of the following is called as a conventional trickling filter?

Detailed Solution for Test: Conventional Trickling Filter - Question 3

Explanation: Low rate trickling filter is called as a conventional trickling filter. It is also called as standard rate and percolating filter.

Test: Conventional Trickling Filter - Question 4

 The BOD after the filtration of sewage from the low rate trickling filter is

Detailed Solution for Test: Conventional Trickling Filter - Question 4

Explanation: The BOD of the effluent obtained after the filtration of sewage from the low rate trickling filter is between 80 to 90% and the effluent obtained is highly nitrified and stabilized.

Test: Conventional Trickling Filter - Question 5

 The efficiency of a percolating filter is given by 

Detailed Solution for Test: Conventional Trickling Filter - Question 5

Explanation: The efficiency of a percolating filter is given by η = 100/(1+0.0044 (μ)1/2) where, μ is the organic loading in kg per hectare meter per day.

Test: Conventional Trickling Filter - Question 6

State whether the following statement is true or false.
The removal of BOD is independent of the loading conditions in infiltration process. 

Detailed Solution for Test: Conventional Trickling Filter - Question 6

Explanation: When the loading conditions are less, the efficiency of the filter will be more and the removal of BOD from the effluent will be more.

Test: Conventional Trickling Filter - Question 7

The organic loading in low rate trickling filter is 900 kg/hectare-meter/day. What is the efficiency of the filter?

Detailed Solution for Test: Conventional Trickling Filter - Question 7

Explanation: Efficiency of low rate trickling filter = 100/(1+0.0044 (μ)1/2) = 100/(1+0.0044 (900)1/2) = 100/1.132 = 88.3.

Test: Conventional Trickling Filter - Question 8

The organic loading in a trickling filter is measured in

Detailed Solution for Test: Conventional Trickling Filter - Question 8

Explanation: The organic loading in a trickling filter is measured in kg / hectare-meter/day where, 1 hectare = 104m3.

Test: Conventional Trickling Filter - Question 9

The hydrogen sulfide gas formed during the filtration of sewage can be removed by

Detailed Solution for Test: Conventional Trickling Filter - Question 9

Explanation: The hydrogen sulfide gas is formed when the fixed nozzles are used during the filtration process, so sewage is chlorinated to prevent the formation of H2S gas.

Test: Conventional Trickling Filter - Question 10

The recirculation factor in a low rate trickling filter is

Detailed Solution for Test: Conventional Trickling Filter - Question 10

Explanation: The recirculation factor F = (1+ R/I) / (1+0.1 (R/I)) 2 = (1+0) /(1+0)2 = 1.

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