Bnot just pollute the air, RICK KILNS they also consume the fertile top layer of the soil. India is the second largest producer of bricks in the world and manufactures nearly 200 billion bricks a year. About 65 per cent of these bricks are made in the Gangetic plains,which have one of the world’s most fertile alluvial soils.
The reason this sector continues to be extremely damaging to air and land resources is that it still uses traditional raw material and inefficient technologies to manufacture bricks.Most of the kilns are in small towns and villages,and fall in the unorganised sector which is difficult to monitor.The Ministry of Environment,Forests and Climate Change has notified particulate matter emission standards and minimum stack heights based on the production capacity of the kiln and the technology they use.But implementation of these rules remains poor.Since the market for bricks made from fly ash or construction and demolition waste is virtually nonexistent, the industry continues to use soil.
Estimates show that every year 1.5 trillion bricks are produced globally,of which 87 per cent are produced in Asia.China heads the list with 67 per cent of the global production.