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1THERMAL POLLUTION
THERMAL POLLUTION
AISWARYA T VBMROLL NO 5
THERMAL POLLUTION 2
L POLLUTION
3THERMAL POLLUTION
THERMAL POLLUTION
THERMAL POLLUTION REFERS TO EJECTION OF HEAT INTO ENVIRONMENT USUALLY AQUATIC SYSTEM ,RAISING IT’S TEMPERATURE ABOVE LIMITS
EFFECTS OF THERMAL POLLUTION❑PHYSICAL ❑CHEMICAL❑BIOLOGICAL
4THERMAL POLLUTION
PHYSICAL EFFECTS
❑AS TEMPERATURE INCREASES ,SEDIMENTATION OF PARTICLES INCREASES DUE TO INCREASE OF DENSITY
AND VISCOSITY OF WATER❑AS WATER BECOMES WARM ,IT’S PALATABILITY DECREASES❑RATE OF EVAPORATION INCREASES❑WARM WATER BEING OF LOW DENSITY SPREADS ON SURFACE OF WATER BODIES CAUSING THERMAL STRATIFICATION THIS BECOMES BARRIER FOR OXYGEN PENETRATION INTO DEEPER LAYERS IT ALSO EFFECTS NORMAL CIRCULATION PATTERNS
THERMAL POLLUTION 5
CHEMICAL EFFECTS
•RATE OF CHEMICAL REACTION IS HIGHLY DEPENDENT ON TEMPERATURE
•IT IS SEEN THAT THE RATE OF CHEMICAL REACTION DOUBLES WHENWHEN TEMPERATURE INCREASES 10 DEGREE CELSIUS
•BOD INCREASES WITH INCREASE IN TEMPERATURE THERMAL POLLUTION 6
BIOLOGICAL EFFECTS
•SINCE DIFFERENT SPECIES FAVOUR DIFFERENT TEMPERATURES ,THERMAL POLLUTION LEADS TO DECLINE OF ONE SPECIES AND GROWTH OF OTHER
•LEADS IN IMBALANCE OF FLORA AND FAUNA
THERMAL POLLUTION 7
•METABOLIC RATE OF FISHES INCREASE AND ALSO THE BACTERIAL ACTIVITY
INCREASES LEADING TO REDUCTION OF OXYGEN CONTENT
THERMAL POLLUTION 8
IT REDUCES OXYGEN LEVEL
TERMINATION OF SPECIES REPRODUCTION
SENSITIVE TO TEMPERATURE DURING SPAWNING FISH GROWTH IS VERY OR
EMBRYO DEVELOPMENT THIS CAN LEAD TO TERMINATION
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THERMAL POLLUTION 10
PHYSIOLOGICAL PROBLEMS
AS ALL PROTIENS AND ENZYMES ARE HEAT LABILE
THERMAL POLLUTION 11
TOXICITY INCREASES
POLLUTANTS PREASENT IN WATER BECOME MORE TOXIC AT ELEVATED TEMPERATURES
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THERMAL POLLUTION 13
CONTROL MEASURES
PROVIDE ADEQUATE COOLING TOWERSCHANNEL THERMAL EFFLUENTS
WARM WATER STORED IN EARTH LIKE PONDS
PROVIDE SRAY PONDS
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THERMAL POLLUTION 15
THERMAL POLLUTION 16
Save our water resourcesSAVE NATURE
BIOMAGNIFICATION
• HOW DOES THIS EFFECT HUMAN?
• THE TOXICITY INCREASES FROM EACH TROPHIC LEVEL AND HUMANS ARE THE TOP MOST TROPHIC LEVEL ,TOXICITY IS MORE CAUSING DIFFERENT DISEASES LIKE CANCER
THERMAL POLLUTION 17
THERMAL POLLUTION 18
