CES Technical Report 126, April 2012
ENVIRONMENTAL PROFILE AND PEOPLE'S LIVELIHOOD ASPECTS IN THE VICINITY OF COAL BASED THERMAL POWER PLANT AT YELLUR PANCHAYAT, UDUPI DISTRICT
MITIGATION MEASURES

Table 40 summarises the environmental impacts due to mismanagement of TPP and the required mitigation measures.

  1. Salinity intrusion into the groundwater due to high porosity of soil (lateritic)  has rendered drinking water non palatable and unfit for different types of domestic usages.
  2. Hydrocarbons leaching from the plant sites can be detrimental for the soil and aquatic microflora. The presence of the persistent oil spills will block the air water interface, consequently leading to anoxia and death of aquatic life.
  3. Heavy metals in effluents which are discharged directly to surface water bodies or leached haslead to water (surface and also ground water) and soil contamination. The heavy metal pollution would ultimately lead to serious health impacts the occurrences of which are already noticeable in the health of local inhabitants.
  4. Higher accumulation of heavy metals results in the uptake of the Heavy metals into the plant systems by the cation exchange capacity of the plants where they exchange the K+ present in the roots with essential cations present in the soil systems. Higher abundance of heavy metals in the soils systems would eventually lead to the trapping of the ions into plants. This again possesses serious threats to the crop yields as well as bio accumulation related health problems. This biogenic effect has a long term impact on the soil systems and the productivity of the local crops.
  5. The heavy metals bio accumulate in the aquatic food chain as the polluted waters are openly let to the nearby streams and water bodies. This leads to hyper accumulation of Heavy metals in fish and causes toxicity to human health on consumption (based on heavy metal analysis)
  6. The consumption of water with high salinities or TDS would eventually lead to sickness, severe dehydration, brain damage and ultimately death. High salt content in the drinking water affects the metabolism of the body largely. With higher salt influx the metabolism tries to balance the same effect by hydrating the body with every water molecules present in the body. This eventually leads to breakdown of the organ systems and the body stops functioning. The acute dehydration might lead to coma or permanent brain damage. The ability of the kidneys to send excess salt out of the body also collapses due to consistent usage of saline waters leading to renal failures.
  7. The release of supersaturated salinemist due to insufficient desalination has led to the deposition of the salt in the immediate vicinity on plant parts, infrastructure, etc. This affects the morphology and the strength of the plants. The deposition of the saline particles on the foliar parts results in the plasmolysis of the cells thence killing the soft tissues which are directly exposed. The reduction in the foliar cell densities would in turn result in the decrease in the densities of the chloroplasts leading to reduced photosynthetic activities and lower crop yield. This is evident from the observation of chlorosis and necrotic spots on the vegetative parts of the flora in close proximities. The salt deposition also affects to large extent the reproductive parts as the male and the female reproductory organs of the flora, obstructing fertilisation. Also due to deposition of particulate matters with contaminants on the pollen of the flower has resulted in impairing pollination services. This is evident from reduced pollinators even in peak phonological season. The phyto-toxicity due to this has affected the crop yield. Also, due to deposition of dust the flower has lost their ability to attract pollinators which has affected the fertilisation and embryo formation.
  8. It has been observed that the fly ash waste mismanagement have led to the increase in the PM in the environment. This especially leads to life threatening respiratory syndromes. Bronchitis, lung infection, alveolar stiffness and nasal mucosal infection. Higher instances in the occurrence of asthma are the pointer about air pollution. Improper handling of fly ash (transport) as well as mismanagement of the fly ash pond has seen the traces of fly ash in the surrounding vegetation, land, etc. The vegetation around have a phenomenon loss of their photosynthetic yield because of the lesser exposure of the sunlight to the leaves due to fly ash deposition. The fly ash deposits also close the stomatal opening of the leaves where in the plants completely losses the conduction/transport of the ions from the ground as a result of decrease in the rates of evapo-transpiration and thus transpiration pull. The closure of the guard cells leads to decrease in the exchange of gases which directly affects photosynthetic yield and eventually leads to plant death.
  9. The pollutants from the emission during the coal burning as NOx and SOx also have a profound impact on the local people. The atmospheric SO2 might solubilise in the rain and enter the ground waters as sulphurous acid (H3SO4) or sulphuric acid (H2SO4).
  10. The alterations in the soil pH and ionic regimes have impacted the soil microflora, impairing its ability to mineralize organic matter, resulting in reduced soil fertility or soil nutrients. Apart from these, high variation of pH has lead to a decreased crop yield.

Table 40: the environmental impacts due to mismanagement of TPP and the required mitigation measures

Observations Causal factors Required mitigation measures
(to be implemented by TPP with the regular monitoring of post project monitoring task force (appointed by the district administration involving all stakeholders’ representatives))
WATER
  • Contamination of stream water
  • Leakage from coal storage yard
  • Direct discharge of effluents
  • Discharge of coal mix water
  • Sustained seepage and frequent overflow from ash pond
  • Microbial contamination - Sewage from labour colony, open defecation in the vicinity of labour colony (the presence of feacal coliform bacteria in higher proportions further substantiates, mismanagement of sewage at TPP and also at labour colony).
  • Dumping of organic solid wastes
  • Appropriate containment of coal and coal mix water by redesign of storage yard with drains and rainproof shelter
  • Proper impervious liner for ash pond
  • Treatment of effluents and only treated water to be let into surface water bodies (after passing through wetlands with native species of grass etc.)
  • Installation of sewage treatment
  • Segregation and treatment of solid wastes
  • Strengthen the regulatory mechanism at local levels with adequate and trained professionals
  • Contamination of ground water
  • Salinity intrusion
  • Leakage from pipe
  • Leakage of saline water due to improper storage
  • Deposition of salt on vegetation and subsequent discharge to soil with precipitation
  • Hydrocarbon inflow
  • Acidic salts like sulphates
  • Heavy metal leaching
  • Sewage from labour colony, open defecation in the vicinity of labour colony
  • Avoiding supersaturated saline mist discharge from cooling towers
  • Leakproof salt tolerant pipe (water intake system)
Proper storage of salt water,
Remove salinity from water before use
  • Bioremediation of hydrocarbon based waste
  • FGDs and other desulphurization techniques (sulphur scrubber) for arresting sulphur
  • Treatment of coal mix water containing sulphates and heavy metals (bioremediation, ion exchange resins)
  • Ground water table fluctuation
  • Over exploitation of ground water
  • Rainwater harvesting through surface water harvesting and reduced dependence on ground water at TPP
  • Implementation of Sujala Dhara programme to provide drinking water to the villages through the construction water storage tanks (with adequate safety and catchment conservation measures)
AIR
  • Salt deposition on leaves
  • Supersaturated saline mist discharge from cooling towers
  • Avoiding supersaturated saline mist discharge from cooling towers
  • Ash dust
  • Particulate matter dispersion
  • Transport of fly ash in open trucks
  • Dumping of dry ash in ash pond
  • Install functional ESPs
  • Ash transport through closed conveyor belts
  • Alternate use of fly ash
  • Wet dumping of fly ash
  • Unburnt carbon particles 
  • Incomplete combustion of coal
  • Improved thermal efficiency
  • SOx, NOx emissions
  • Improper air pollution control
  • Install efficient FGDs and mechanism for deNOx
LAND
  • Mudslides, soil erosion
  • Inappropriate land stabilization, soil management (exposed slopes) at TPP site
  • Remediation through vegetation (grasses and shrubs as soil binders)
  • Slope stabilization through embankments
  • Soil microbial contamination
  • Open defecation (labour colony)
  • Discharge of effluents to streams
  • Discharge of labour colony sewage
  • Provide appropriate sanitation facility
  • Treatment of effluents and sewage
  • Salinity in soil
  • Supersaturated saline mist discharge from cooling towers
  • Leakage from pipes– degradation of land, enhanced salinity has made soil unproductive and unfit for agriculture
  • Leakage of saline water due to improper storage
  • Deposition of salt on vegetation and subsequent discharge to soil with precipitation
  • Avoiding supersaturated saline mist discharge from cooling towers
  • Leakproof salt tolerant pipe (water intake system)
  • Proper storage of salt water
  • Remove salinity from water before use
  • Scientific assessment of lands affected by salinity for restoring the land (fit for agriculture and sustain livelihood of people)
  • Beside the compensation for loss of crop  for the particular year, it has to be extended till the salinity  affected cropland  are restored
  • Degraded land
  • Insufficient green cover
  • Atleast 33% vegetation cover at the project site  as per the environment norms of GoI and also as per the stipulations of environment clearance
VEGETATION
  • Leaf burning, drying of leaves
  • Salt deposition on leaves
  • Salinity in subsoil root systems
  • Avoiding supersaturated saline mist discharge from cooling towers
  • Leakproof salt tolerant pipe (water intake system)
  • Proper storage of salt water
  • Remove salinity from water before use
  • Chlorosis and necrosis
  • Mottling and dwarfing
  • premature fall of coconut
  • non-flowering of jasmine
  • loss of Thulasi (Ocimum sanctum)
  • decrease in yield of paddy, banana, areca
  • reduced productivity of fodder crops (local grass, herbs)
  • Phyto-toxicity due to salinity, SOx, NOx and heavy metals
  • FGDs and other desulphurization techniques (sulphur scrubber) for arresting sulphur
  • Treatment of coal mix water containing sulphates and heavy metals (bioremediation, ion exchange resins)
  • Particulate deposition on leaves
  • Absence of multitier vegetation
  • Plant appropriate saplings to mitigate dust and noise
INFRASTRUCTURE
  • Degradation of tin sheets, vehicle chassis, dish antenna, well pulleys, wire mesh of wells, transmission lines, railway tracks, fencing, roof tiles,
  • Flake formation in distemper for walls
  • Salt deposition and consequent corrosion
  • SOx
  • Avoiding supersaturated saline mist discharge from cooling towers
  • FGDs and other desulphurization techniques (sulphur scrubber) for arresting sulphur
HUMAN HEALTH AND LIVELIHOOD
  • respiratory ailments like asthma, alveolar infections, bronchitis, etc.
  • eye irritation and skin itching Skin rashes, lesions, nail deformation (Onychodystrophy),
  • Digestive disorder
  • Respirable suspended particulates
  • Leakage/discharge of hydrocarbon based substances
  • Contamination of surface/ground water bodies and soil from coal mix water due to fugitive dust suppression or rainfall run-off. Exposure of coal to air and water results in the oxidation of the pyrite to sulphate and sulphuric acid, causing acid mine drainage.
  • Contamination of water – SOx, heavy metals,
  • Fecal contamination
  • Allergenic responses
  • Functional ESPs
  • FGDs and other desulphurization techniques (sulphur scrubber) for arresting sulphur
  • Avoiding supersaturated saline mist discharge from cooling towers
  • Bioremediation for heavy metals
  • Treatment of effluents and sewage
  • Using closed conveyor belts for transfer of fly ash
  • Wet disposal of ash
  • Multitier and well maintained green belt around the TPP as well as ash pond
  • Conversion of water tanks (constructed under Sujaladhara  programme for supplying drinking water to nearby villages – Santhur).
  • Livelihood of weaker section of the society is threatened with poor or no flowering of jasmine, plantain leaves, thulasi, etc.
  • Reduced yield of agricultural (paddy,  etc.) and horticultural (Areca, coconut, cashew, tamarind, Guava, etc.) crops
  • Scarcity of water suitable for drinking and other domestic activities
  • Forced displacement without appropriate rehabilitation of native forest dwellers
  • Improper valuation of ecosystem goods and services while compensating the loss
  • Conversion of water tank/pond to ash pond, depriving local people of their basic need – clean drinking water
  • Phyto-toxicity
  • Effluent contaminating water sources
  • Indifferent attitude/apathy  of TPP officials towards local people
  • Inhuman district authorities (forced eviction of local inhabitants during high monsoon at midnight) and insensitive to environment contamination complaints.
  • Restore/ construct water pond/tank with adequate safety measures to provide drinking water to the villages

 

  • FGDs and other desulphurization techniques (sulphur scrubber) for arresting sulphur
  • Treatment of coal mix water containing sulphates and heavy metals (bioremediation, ion exchange resins)
  • Avoiding supersaturated saline mist discharge from cooling towers
  • Sensitise district authorities (including DC) of environmental ethics, valuation of ecosystem services and goods
  • Issue of CFO (Consent for continued operation) by regulatory authorities only on compliance of environmental norms
  • Environmental Management Cell (EMC) with qualified environmental professionals for regular monitoring and environmental auditing
  • Capacity building of the district administration of India’s environmental legislations pertaining to air, water, environment, forest dwellers rights, fundamental rights of the citizens, Biodiversity act, MSW rule, etc.
  • Strengthen the regulatory mechanism at local levels with adequate and trained professionals
LIVESTOCK
  • Ailments related to skin, respiratory tract, etc.
  • Miscarriages and decline in milk yield
  • Fodder – due to uptake of heavy metal has become non-palatable
  • Fodder – reduced grass productivity due to salt as well as ash dust deposition
  • Non-palatable grasses, and other herbs due to contamination
  • poultry death due to consumption of effluent mixed stream waters
  • Respirable suspended particulates
  • Leakage/discharge of hydrocarbon based substances
  • Contamination of surface/ground water bodies and soil from coal mix water due to fugitive dust suppression or rainfall run-off. Exposure of coal to air and water results in the oxidation of the pyrite to sulphate and sulphuric acid, causing acid mine drainage.
  • Contamination of water – SOx, heavy metals,
  • Phyto-toxicity
  • Effluent contaminating water sources
  • Avoiding supersaturated saline mist discharge from cooling towers
  • Bioremediation for heavy metals
  • Treatment of effluents and sewage
  • Functional ESPs
  • FGDs and other desulphurization techniques (sulphur scrubber) for arresting sulphur
  • Using closed conveyor belts for transfer of fly ash
  • Wet disposal of ash
  • Multitier and well maintained green belt around the TPP as well as ash pond

 

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