A household generates 200 litres of wastewater per day. If 60 % is treated in a primary settling tank and the remaining 40 % in a secondary biological reactor, how many litres are treated in each system?
Answer
120 litres in primary settling tank and 80 litres in secondary biological reactor
The correct answer is 120 litres in primary settling tank and 80 litres in secondary biological reactor — Compute the volume treated in secondary: litres.
Step-by-step solution
- Compute the volume treated in primary: litres.
- Compute the volume treated in secondary: litres.
Common mistake: Using incorrect percentage values
Concept tested: Percentage calculation in wastewater treatment
Published · How this solution was prepared and checked
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