Waste plants fail, NEERI steps in to clean Yamuna

Delhi: 8 August, 2021 (Times of India)


New Delhi: After common effluent treatment plants (CETPs) failed to comply with the prescribed standards for around two years, National Environmental Engineering Research Institute (NEERI) has proposed short-term and long-term plans for improving the performance of CETPs. The central monitoring committee (CMC), which is monitoring the progress of the Yamuna-related projects, has said in a report that the short-term plan is removal of large amounts of sludge, while the long-term plan is upgradation of CETPs.
Delhi Pollution Control Committee (DPCC) issued directions for closure to 1,065 water polluting industries in the 17 industrial areas connected to 13 CETPs last month. DPCC in July had given directions to all the 13 CETPs for ensuring compliance to the norms or they would be closed down.
The monitoring panel in its report said, “Special Commissioner (Industries), Delhi informed that there is no plan for closure of CETPs and NEERI has been engaged for improvement of performance of CETPs. Short-term plan is for removal of large amounts of deposited sludge. The Treatment, Storage and Disposal facility (TSDF) site for hazardous waste is going to start soon and all sludge will be moved to TSDF site and performance of CETPs will improve. Long-term plan is for upgradation of CETPs. Recently, NEERI has given options for upgradation of three CETPs, which is under examination. Accordingly, instructions will be given to all CETP societies for upgradation of CETPs at the earliest.”

It was also suggested that DPCC has to notify the outlet parameters for industries that are permissible as per inlet norms for CETP. Further, as some of the effluents are being discharged into the storm water drains, therefore, on a pilot basis, it was proposed to treat wastewater in a drain from Wazirabad in the CETP.

“However, NOC from DJB is awaited in this regard. ED (Tech), National Mission for Clean Ganga stated that NEERI has taken too much time in technical appraisal for upgradation of CETPs. Director General, NMCG highlighted that since the beginning of monitoring by CMC in January 2020, same status has been reported with regard to upgradation of the CETPs. Industries have to follow the norms. Unless the closing down of the member industrial units of the CETPs takes place, no improvement of CETP performance is possible. It was suggested that NEERI should complete the study in a time-bound manner,” said the report.

According to DPCC, monthly analysis reports show 12 CETPs have not been meeting prescribed water quality standards in terms of biochemical dissolved oxygen, total dissolved solids, total suspended solids, chloride and sulphide for around two years. According to the monthly progress report filed by the environment department, 33,690 industrial units situated in 17 industrial units are connected to these CETPs. Thirteen CETPs are operational in Delhi with a total capacity of treating effluent of 212.3 MLD.