CS Professional · Environmental, Social and Governance (ESG) - Principles and Practice · Environment
Kaveri Textiles Pvt Ltd discharges dyeing effluent after treatment. The Company Secretary is preparing the board note on water governance. Which approach best reflects a zero liquid discharge (ZLD) objective?
A zero liquid discharge approach treats effluent and recovers and reuses almost all the water inside the plant so that no liquid waste leaves the premises. Diluting effluent, timing discharge or storing untreated waste in pits does not achieve ZLD and is environmentally unsound.
- ADiluting treated effluent with fresh water to meet discharge norms before releasing it to a river
- BTreating effluent and recovering and reusing nearly all the water in the plant, with no liquid effluent leaving the premisesCorrect
- CDischarging effluent only at night to reduce public visibility
- DStoring untreated effluent in unlined pits on site
Explanation
ZLD means treating wastewater and recycling it within the facility so that no liquid effluent is discharged outside. Dilution merely lowers concentration and wastes fresh water; night discharge and unlined pits are non-compliant and harmful.
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