GATE ES · 2025 · ES
Question 39: Kinetics and reactor design
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Question 39
ESMCQ2 marksNeeds review
Consider the following figure of an activated sludge process (ASP), depicting the flow (
), substrate (
), and microorganism concentration (
) at various points in the system, where subscripts “0”, “r”, “w”, “e”, and “i” indicate influent, recycle line, wastage, effluent, and flow from aeration tank to settling tank, respectively. Note that influent to the ASP has microbes too. V is volume of aeration tank.
Choose the correct option for net rate of formation of microorganisms in the system at steady state, from the following
Your answerChoose one option.
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2025ES
GATE ES 2025 · Paper 1
Environmental Science and Engineering · Original paper archive
- Section
- Environmental Science and Engineering
- Question type
- Multiple choice (MCQ)
- Marks
- 2 marks
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