Centre for Science and Environment (CSE) said that the UP Pollution Control Board (UPPCB) has issued a notice to brick entrepreneurs of Ghaziabad, Gautam Budh Nagar and Hapur and directed them to convert from natural draft kilns to induced draft kilns in 90 days.
The step has been taken to reduce air pollution from brick kiln sources to improve the air quality in Delhi and NCR.
"The UPPCB has rightly identified brick kiln as an important source of air pollution. However the technological solution suggested - changing over from natural draft to induced draft - is inadequate and will not lead to reduction in pollution.
He said that the notification should have also addressed issues such as arrangement of bricks, fuel feeding mechanisms and air flow which are very important factors to ensure pollution reduction.
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CSE researchers also noted that the notification should also include a change-over to fly ash brick manufacturing.
It is estimated that the brick kiln sector is the fourth largest contributor to PM10 emissions in the NCR region after transport, road dust and thermal power plants.
CSE said that the UPPCB notification also misses the
opportunity to move brick kiln operators of NCR to flyash brick making.
The green body said that power plants in and around Delhi have huge stocks of unutilised ash in their ponds which is also one of the major contributors to air pollution in Delhi-NCR.
"During summer, coal and fly ash contribute about 30 per cent of PM10 emissions. A CSE analysis shows that the pond ash availability in Dadri and Badarpur is around 12 and 12.5 million tonnes respectively.
It said that there is adequate technical understanding and experience available in the country to reduce pollution from the brick kiln industry.
"The UPPCB and the brick kilns owners can use these to make the right technological choices that will help in reducing air pollution in the NCR region as well as modernise the brick industry.
"The UPPCB needs to come up with a clear technological road-map for the brick sector to effectively contribute towards curbing air pollution," Bhushan said.