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THERMALTHERMAL

POLLUTIONPOLLUTION

Presented byPresented byDisha, Reshmi, AswathiDisha, Reshmi, Aswathi

11ststyear MBAyear MBAICMICM--IMK PoojappuraIMK Poojappura

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OverviewOverview

Here , we will show the a summary to the event ofthis pollution happening:

Raw materials for productivity (organic and inorganic products).

Undergo different chemical reactions with several process.

Excess heat energy is produced as a waste product .

Heat is released through into atmosphere (vapor) and riverine

system (liquid).

Increase of temperature of environmental system

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CAUSESCAUSES

Effluents of industrial process (discharge of hot water to lakes

and rivers). Cooling towers of electrical power stations.

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SOURCES AND METHODSSOURCES AND METHODSMajor

sourcesPowerplants

creatingelectricity

fromfossil

fuels.

Methods of pollution

* Electricity is generated by heat stored in the fossil fuels and the storedenergy creates a heat flow that drives turbine

* The turbines then generate electricity

* All the electricity try to be organized so that it may travel in samedirection in a small line

* Excess heat is then created because of the unnatural process ofcreating organization

Water ascoolingagent

* Heat exchangers

* Evaporate cooling

Deforestation ofshore line

* Aggravates soil erosion activity

* Increases amount of light that strikes water

Soilerosion

* Sedimentation at lakes and streams make water muddy

* Muddy water lowers the clarity of water with the introduction ofimpurities to water which increase the light absorption from atmosphere

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EFFECTS OF THERMAL POLLUTIONEFFECTS OF THERMAL POLLUTION

Affects the level of dissolved oxygen in water.

Instant death to some species which may affect the food chain.

Encourages the rapid growth of algae.

May result in permanent changes in the species composition ofaquatic ecosystem.

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Ecological effectsEcological effects warm waterwarm water

Elevated temperature typically decreases the level of dissolved

oxygen (DO) in water. The decrease in levels of DO can harm

aquatic animals such as fish, amphibians and copepods.

Primary producers are affected by warm water because higherwater temperature increases plant growth rates, resulting in a

shorter lifespan and species overpopulation. This can cause an

algae bloom which reduces oxygen levels.

In limited cases, warm water has little deleterious effect andmay even lead to improved function of the receiving aquatic

ecosystem. This phenomenon is seen especially in seasonal

waters and is known as thermal enrichment.

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Ecological effectsEcological effects cold watercold water

Releases of unnaturally cold water from reservoirs candramatically change the fish and macro invertebrate

fauna of rivers, and reduce river productivity. In Australia, where many rivers have warmer

temperature regimes, native fish species have beeneliminated, and macro invertebrate fauna have beendrastically altered.

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Physical & Chemical effects of thermalPhysical & Chemical effects of thermalpollutionpollution

Affects the level of dissolved oxygen in water.

An increase in temperature can also cause a reduction of

solubility . Another problem is the stratification in lakes. Because of

density difference, layers of different temperature are formed

in accordance with the depth of water. So the temperature of

water changes suddenly with the depth.

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BIOLOGICAL EFFECTS OF THERMALBIOLOGICAL EFFECTS OF THERMALPOLLUTIONPOLLUTION

Proliferation of algaeProliferation of algae

Increase \ reduction in temperaturemay result in the Destruction offauna and flora.

Secondly, with a higher temperature,algae grow much more rapidly.They use up dissolved oxygen (DO)in water, block the sunlight fromgetting to the submerged aquatic

vegetation (SAV), and the entireecosystem suffers.

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HEALTH SIDE EFFECTSHEALTH SIDE EFFECTS

Thermal pollution affects

the population of aquatic

food. It also affects fish

populations which affects

recreational activities.

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ENVIRONMENTAL SIDE EFFECTSENVIRONMENTAL SIDE EFFECTS

When the water temperature increases, the dissolved oxygen level

decreases exponentially. This increases respiration rates and the

consumption of oxygen occurs at a faster rate.

Warm water also disrupts spawning and kills the young.

Cold water can change the productivity of fish and micro

invertebrate fauna.

Causes Thermal Shock

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CONTROLOFTHERMAL POLLUTIONCONTROLOFTHERMAL POLLUTION

Power plants and factories can decrease thermal pollution by having

the heated water go through a cooling tower (where the water is

cooled by evaporation) before it is discharged into bodies of water.

Hot waste water can be used for heating. Keep vegetation along streams and other bodies of water. This

reduces erosion and keeps the water clearer and cooler.

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CONCLUSIONCONCLUSION

Thermal pollution is a problem that we have to deal with

more and more. Even if we can't see immediately the effects

of thermal pollution it has an impact on our environment.

Scientist can make efforts to ensure minimum heat losses byimproving thermal efficiencies of heat engines. Nonetheless,

the best solution is to reduce consumption of fossil fuels and to

limit day-to-day energy usage. The development of alternative

energy resources such as solar power, wind energy and

hydropower can also be beneficial.

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THANK YOUTHANK YOU