Question:
Which of the following factors DO NOT affect the operation of a trickling filter?
Which of the following factors DO NOT affect the operation of a trickling filter?
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• Trickling filter → Organic load + flow rate + temperature matter
• Linear velocity → Not a key parameter
Updated On: May 13, 2026
- Organic loading
- Hydraulic flow rates
- Temperature of the water and air
- Linear flow velocity of the liquid
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The Correct Option is D
Solution and Explanation
Concept:
A trickling filter is a biological wastewater treatment system where microorganisms grow on a fixed medium and degrade organic matter.
• Its efficiency depends on factors influencing microbial activity and contact time
Step 1: Analyzing each factor.
• Organic loading: Determines amount of substrate → Affects operation.
• Hydraulic flow rates: Controls contact time and distribution → Affects operation.
• Temperature: Influences microbial activity → Affects operation.
• Linear flow velocity: Not a standard design/operational parameter for trickling filters → Does not significantly affect.
Step 2: Selecting the correct answer.
Thus, linear flow velocity of the liquid does not directly affect trickling filter operation.
• Its efficiency depends on factors influencing microbial activity and contact time
Step 1: Analyzing each factor.
• Organic loading: Determines amount of substrate → Affects operation.
• Hydraulic flow rates: Controls contact time and distribution → Affects operation.
• Temperature: Influences microbial activity → Affects operation.
• Linear flow velocity: Not a standard design/operational parameter for trickling filters → Does not significantly affect.
Step 2: Selecting the correct answer.
Thus, linear flow velocity of the liquid does not directly affect trickling filter operation.
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