Environment & Ecology · Environmental Engineering
In an activated sludge process, sludge recirculation from the secondary clarifier to the aeration tank is mainly required to:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
Share:
- 1Maintain an adequate concentration of active biomass in the reactor✓
- 2Prevent disinfection demand in the final effluent
- 3Reduce hydraulic retention time to zero
- 4Remove grit that escaped preliminary treatment
Correct answer
Maintain an adequate concentration of active biomass in the reactor
Download Single Question PDF
Save this question and verified answer as a clean study sheet with live clickable link.
👥
Share with Friends & Study Groups
Challenge your peer aspirants on WhatsApp or Telegram to solve this question!
Online Test Series
Start Free Mock Test →Preparing for Environment & Ecology?
Practice full-length mock tests with real exam timers, instant score analysis, and all-India ranking.
Chapter Practice
Practice Environmental Engineering MCQs →Want more practice questions on Environmental Engineering?
Solve complete topic-wise tests with detailed solutions on GkGet.
Related Practice Questions
Recommended practice questions in Environment & Ecology · Environmental Engineering