Capital’s pollution woes | Over 1,500 polluting units shut in NCR: CAQM
In a step against polluting units across NCR, directions have been issued regarding the closure of 1,515 industries, and construction and demolition sites, said the Commission for Air Quality Management (CAQM) in an affidavit filed on November 11. Following this, such units — including 264 in Delhi, 234 in Haryana, 637 in UP and 121 in Rajasthan — have been shut. From textile lines in Panipat and Sahibabad to food processing units and metal furnaces in Bawana and Bhiwadi — the Central Pollution Control Board (CPCB), meanwhile, has commissioned IIT Kanpur for a study to re-examine particulate matter (PM) standards for three of the most emission-intensive industrial sectors operating across Delhi-NCR. These clusters are part of a larger industrial region, which affects Delhi’s air quality. Delhi’s AQI remained in the ‘very poor’ category on Monday, with the 24-hour average settling at 351, a slight improvement from 377 recorded on Sunday, according to the CPCB. In the affidavit filed in the Supreme Court, the CAQM also stated that out of about 50,000 operational industries across the Delhi-NCR, nearly 11,000 fall under the air-polluting category. These are units whose manufacturing processes, fuel use or emissions place them under the highest levels of regulatory scrutiny. They range from large industrial boilers and metal furnaces to smaller combustion-based units operating inside densely packed clusters around the capital. The industrial sector’s share in Delhi’s PM2.5 appears modest when viewed within city limits. A Decision Support System (DSS) developed by the Indian Institute of Tropical Meteorology estimates that industry, construction and the energy sector together contribute around 10 per cent to Delhi’s particulate levels on most days. However, an assessment by the Centre for Science and Environment (CSE), based on DSS data for non-crop-burning periods, shows that emissions transported from the surrounding NCR districts — including major industrial belts — can contribute up to two-thirds of Delhi’s PM2.5. Under the national framework, the CPCB classifies every industrial sector using a pollution index — a score that combines its potential to pollute air, water and based on its generation of hazardous waste. Sectors with high scores are placed in the ‘Red’ category, which CPCB describes as “highly polluting” and subject to the strictest emission standards and regulatory control. Lower scores place sectors in the ‘Orange’ and ‘Green’ categories, while units falling under the ‘White’ category are considered practically non-polluting. An industrial unit is treated as polluting if it belongs to high-pollution category, runs fuel- or process-intensive operations, or fails to comply with the emission norms and consent conditions notified under the Air Act, the Water Act and the Environment (Protection) Act.
