No pollution control devices? Delhi-NCR industries face closure, show-cause notices

The CPCB has ordered pollution-control boards in Delhi-NCR and nearby states to act against industrial units that have not taken concrete steps toward compliance. The action targets units in 17 highly polluting categories covered by the CAQM’s particulate-matter rules. It is intended to control emissions before winter worsens regional air quality.

Units without installed APCDs must provide satisfactory evidence of placing work orders for installation or retrofitting. If they cannot do so within five days, authorities should issue closure directions. Units that have not placed work orders should also receive immediate show-cause notices for closure.

A closed unit must remain shut until it places work orders and submits a credible compliance timeline accepted by the pollution control board. Notices may also go to units lacking an adequacy assessment report or exemption certificate. The CPCB’s enforcement could push industries to install controls faster and reduce industrial emissions.

An air pollution control device, or APCD, is equipment used to remove or reduce pollutants from an industrial plant’s exhaust before they enter the atmosphere. Its purpose is to control emissions at the source. The article focuses on APCDs because industrial stack emissions contribute significantly to particulate-matter concentrations in Delhi-NCR.

A plant can install a new APCD or retrofit an existing pollution-control system. The device treats the exhaust stream, reducing the particulate matter released through the industrial stack. The CPCB required covered units to use vendors empanelled by the National Productivity Council for installation or upgrades.

The article does not name specific APCD technologies or explain their internal design. It does state that units must show work orders, obtain an adequacy assessment report or exemption certificate, and meet the prescribed emission limit. These requirements let regulators track whether equipment can deliver credible compliance.

The compliance rules cover around 2,300 industries in Delhi-NCR and adjoining areas. They apply to medium and large industries across 17 categories identified as highly polluting. The rules were prescribed by the Commission for Air Quality Management, or CAQM, in February.

The article gives food processing, textiles and metals as examples of covered sectors. These industries must meet the particulate-matter emission standard and install or retrofit suitable air pollution control devices. They must also provide evidence of work orders, or obtain an adequacy assessment report or exemption certificate.

The original compliance deadline was August 1. The CAQM later moved it to October 1 after industries reported supply-chain disruptions, shortages and cost inflation linked to the West Asia crisis. The CPCB has now directed state boards and the DPCC to act against units that remain non-compliant.

The particulate-matter emission limit is 50 micrograms per cubic metre, written in the article as 50 ug/m3. The CAQM prescribed this standard in February for 17 highly polluting industry categories operating in Delhi-NCR and adjoining areas.

The limit applies to medium and large industries, including sectors such as food processing, textiles and metals. To reach it, units may need to install new air pollution control devices or retrofit existing equipment. The CPCB directed that installation and upgrades be handled through National Productivity Council empanelled vendors.

Meeting the limit became a regulatory requirement after the CAQM’s deadline was extended from August 1 to October 1. Units that still lack work orders, adequate technical assessments or exemption certificates face enforcement action. The CPCB said controlling industrial emissions at the source is critical for winter air quality.

Industrial emissions are a serious concern in winter because they contribute significantly to particulate-matter concentrations across the National Capital Region. The CPCB described industrial stack emissions as a significant contributor to NCR’s pollution. This makes emission control especially important as the winter season approaches.

The key mechanism is direct control at the industrial source. Plants release emissions through stacks, and pollution-control devices can limit particulate matter before it enters the surrounding air. The CPCB therefore focused on whether industries had installed APCDs, placed work orders, or provided credible evidence of progress.

The order warns that continued operation of non-compliant units threatens public health and ambient air quality. Regulators directed boards in Haryana, Uttar Pradesh and Rajasthan, along with the DPCC, to act. Closures and show-cause notices are intended to accelerate compliance before winter pollution intensifies.

A non-compliant industrial unit may receive a show-cause notice for closure or a direct closure direction. The CPCB targeted units that lacked installed APCDs, work orders, adequacy assessment reports or exemption certificates. This creates a clear consequence for continuing operations without credible compliance steps.

If a unit fails to provide satisfactory evidence of placing APCD work orders within five days, the pollution control board should issue closure directions. The unit must remain closed until work orders are placed and a credible compliance timeline is submitted and accepted. Authorities can also serve immediate show-cause notices to units without work orders.

The intended effect is to reduce particulate matter at its industrial source. The CPCB said continued operation of non-compliant units poses a serious threat to public health and ambient air quality. Stronger compliance could therefore improve Delhi-NCR’s air, especially before winter.

Particulate matter is a mixture of solid particles and liquid droplets suspended in the air. It can come from industrial emissions and other sources. The article focuses on particulate matter because the CAQM set an emission limit for it and the CPCB identified industrial stacks as a significant contributor in NCR.

Tiny particles are dangerous because inhaled air carries them into the respiratory system. Smaller particles can travel deeper into the lungs, where they may irritate tissue and trigger inflammation. Some can pass beyond the lungs into the bloodstream. This can worsen breathing problems and place stress on the body.

The article does not detail particular diseases or particle sizes. It does state that continued operation of non-compliant units poses a serious threat to public health and ambient air quality. Installing or retrofitting APCDs is therefore intended to reduce particulate matter before industrial exhaust reaches the surrounding air.