GATE ES · 2025 · ES
Question 58: Sources and characteristics of industrial effluents; Concept of Common Effluent Treatment Plants (CETP); Wastewater recycling and zero liquid discharge.
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Question 58
ESNAT2 marksNeeds review
A common effluent treatment plant with a capacity of 2 million litres per day (MLD) employs reverse osmosis (RO) for water reuse. The RO unit rejects 95% of the total dissolved solids (TDS) and the water recovery rate is 70%. If the TDS concentration in the RO feed is 800 parts per million (ppm), the TDS in the RO reject is ______ g/L. (rounded off to one decimal place)
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2025ES
GATE ES 2025 · Paper 1
Environmental Science and Engineering · Original paper archive
- Section
- Environmental Science and Engineering
- Question type
- Numerical answer (NAT)
- Marks
- 2 marks
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Sources and characteristics of industrial effluents; Concept of Common Effluent Treatment Plants (CETP); Wastewater recycling and zero liquid discharge.
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