Environment & Ecology · Environmental Engineering
A wastewater treatment plant receives flow with highly variable hourly flow rates and intermittent toxic discharges from an industrial area. Which combination of operations is most appropriate before biological treatment?
- 1Flow equalization and appropriate pretreatment at source✓
- 2Secondary clarifier followed by aeration tank
- 3Sludge thickening followed by sand filtration
- 4Screening followed by chlorination only
Correct answer
Flow equalization and appropriate pretreatment at source
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