2,5 DCNB effluent (26 KLD) & SAC effluent (50 KLD) Benefits: Previous treatment method: Effluent was neutralised with caustic (10% NaOH) and fed to MEE ATFD. Salt from ATFD was going for landfilling. Condensate of MEE and ATFD was going into the biotreatment system, followed by discharge to CETP. Established greener treatment method: The acidity was due to sulphuric acid, so caustic was replaced with lime for neutralisation. As a result, CaSO4 formed (in place of Na2SO4) and was filtered out and utilised by cement industries. Filtrate with low TDS diverted to the biotreatment system instead of MEE and ATFD, followed by discharge to CETP. Steam consumption reduction CO2 emission reduction Elimination of landfilling Cost reduction