'Zero Discharge Plan' is being implemented by -

Implementation of Zero Discharge Plan:
Zero Discharge Plan is being implemented
by the DoE (Department of Environment) in the industrial establishments
discharging liquid waste under which the
industrial enterprises are reusing the
generated liquid waste without discharging it
in nature.
From 2014 to February 2021, the
DoE has approved a Zero Discharge Plan in
favour of a total of 600 T-Waste Emitting
Industries.

Source: Bangladesh Economic review 2021