The power and water supply to these units was also disconnected.
TNPCB District Environmental Engineer R. Kannan told The Hindu that the said 10 dyeing units, which had Individual Effluent Treatment Plants (IETPs) on their premises, had failed to ensure Zero Liquid Discharge (ZLD) during the treatment of the effluents and hence, the action.
“The units have been found discharging the untreated effluent into River Noyyal,” he said.
The closure orders, according to Mr. Kannan, have been issued under Water (Prevention and Control of Pollution) Act, 1974. Mr. Kannan said that already a total of 53 units affiliated to Common Effluent Treatment Plants (CETPs) remain closed for either failing to remit the fines imposed for polluting River Noyyal or being the members of those CETPs which failed to fit ZLD.