India put strict limits on waste water discharge by the sugar industry in its efforts to curb water pollution and wastage, saying the revised standards will lead to operational performance of the sugar mills.
“Specific wastewater discharge standards have been made stricter, by limiting the same to 200 litre per tonne of cane crushed, as against the earlier limit of 400 litre per tonne cane crushed,” a government statement said.
The final treated effluent discharge has been restricted to 100 litre per tonne of cane crushed and waste water from spray pond overflow, or cooling tower blow down to 100 litre per tonne of cane crushed, the statement added.
It said the new norms allowed only a single outlet point from the unit to encourage operational efficiency and treated effluent recycling practices.
“Further, only one outlet/ discharge point will be allowed, which will be covered as per the ‘24×7 online monitoring’ protocol,” it said.
The waste water conservation and pollution control management mandates that individual sugar units will establish cooling arrangement and polishing tank for recycling excess condensate water to process sections, or utilities, or allied units. The Effluent Treatment Plant (ETP) will also be stabilised one month prior to the start of crushing season and will continue to operate up to one month after the end of crushing season.
The revised standards will lead to improved operational performance of sugar industries through implementation of wastewater discharge standards and waste water conservation and pollution control management protocol.