Hyderabad: Coal-based
thermal power stations in Telangana and Andhra Pradesh, especially
those run by TSGenco and APGenco, are failing to dispose of coal ash
efficiently.
Pollution Control
Board (PCB) officials from both states revealed that while notices were sent
to almost all the thermal power plants regarding improper disposal of
ash, most of them were sent to plants run by these state government
franchises.
A Telangana State PCB official said, “Coal-based power
plants are disposing the ash as of now in ash ponds or giving them away
for free to fly ash brick manufacturers. However, this is not being
done properly. Another method for ash disposal, which was suggested
recently, was dumping the ash in coal mines that have been shut down.
However, the issue remains as ash gets washed out easily unlike sand
which is used to fill gaps in coal mines that are shut.”
Another major issue among coal-based power plants in both states is lack of usage of modern electrostatic precipitators.
While some of the plants have bought the
equipment, they are unable to get the permission from the state
governments to connect these precipitators in their plants as for this
the plants need to be shut down for more than a month.
With
the power crisis looming large in both states, none of the governments
are ready to shut down the plants for the sake of pollution control.
There are four coal-based power plants each being run by TSGENCO and APGENCO in Telangana and Andhra Pradesh respectively.
There are more than 60 such power plants on the anvil most of which are for Andhra Pradesh.
Of these there are more than 30
coal-based power plants that are of 1000 MW capacity or more. Some of
them are mega power projects with planned capacities of more than 4000
MW.If these projects materialize then almost every district of AP will have a coal-based thermal power plant.
A more recent and major concern in
Telangana is the 7600 MW proposed coal-based thermal power plant in
Dameracherla in Nalgonda district.
Experts say thermal plants pose environmental risks
The
proposed 7,600 MW coal-based thermal power plant in Nalgonda in
Telangana and expansion plans of existing coal-based thermal power
plants in Andhra Pradesh may have serious environmental repercussions,
warn experts.
Former union power secretary E.A.S. Sarma said, “The number of
coal-based thermal power plants that have been accorded permission or
are at various stages of getting clearances from the ministry of
environment and forests are about three times the power requirement
projection for 2032. There is no need to develop new thermal power
projects.”
He added, “The power demand is not the same throughout
the day, and it peaks only for a few hours. The generation capacity
cannot be changed as per the power needs in case of coal-based plants,.
However, it can be done in hydel power plants. Coal-based plants cannot
always function at optimum levels and will have to be kept idle
sometimes. They are useful only for satisfying base power needs whereas
hydel projects can easily satisfy peak hour power needs.”
Environmental pollution, health issues and negative impact on
agriculture are the other major concerns associated with coal-based
power plants. These plants have been categorised as among the '17 Highly
Polluting Industries’ by the MoEF. The ash released by coal-based
plants contain harmful chemicals like cadmium, mercury, lead and arsenic
which are carcinogenic.
Mr Sarma said, “People living near the
Simhadri super thermal power plant run by NTPC in Vizag have complained
of bronchitis, skin problems and there have been cases of cancer too.
Groundwater has been polluted and people are now forced to get water
from the tankers supplied by the power plant. There have also been
extensive agricultural losses. Telangana state government officials
should visit those areas and see the ground reality before they go ahead
establishing the mega coal-based plant in Nalgonda.”
Ends/
This is my report which had appeared in Deccan Chronicle. You can find it here:
https://www.deccanchronicle.com/150407/nation-current-affairs/article/coal-ash-telangana-and-andhra-pradesh-sparks-concern