Afterwards, this used water with altered and much high temperature is ejected back to the natural resources including lakes, ponds, seas, etc. This causes sudden increase in temperature of natural water bodies too. The altered water also creates disturbance in the oxygen level of water bodies. This in turn, harms the marine life and local ecosystems. Therefore, thermal pollution caused in water by spilling back the industrial waste and used water in it, causing adverse effects, is known as thermal pollution.
Thermal pollution is not only caused by the hot water but also by the cold water that is discharged by various industries into the rivers or seas containing warm water.
Chief Causes of Thermal Pollution
Water used as coolant & ejected back into water bodies – Mainly, the water that is used as coolant and transferred back to natural water bodies is the chief reason for thermal pollution. This kind of activity is mostly done by production; manufacturing and power plants. These plants use water to cool down their machines and eject back the hot water into water bodies. Thus, the natural water goes through a sudden rise in temperature.
Release of cold water – Just as we mentioned before, many industries liberate very cool water from their reservoirs. This water when mixed up with warm water rivers, lakes or ponds creates a disbalance in the flora and fauna of affected water bodies.
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...veryone’s life! Just check out these facts! Seventy percent of our planet Earth is covered with water. However, do you know that 97% of this water is salt water which means we cannot use it for our drinking or other purposes. Thus, in reality we have only 3% of fresh water. Out of this 3% water also, the 2% of water is available in the form of frozen water. So can you imagine that we are left out with only 1% fresh water? This fact alone tells us the importance of water.
Hence, it is now time to take a pledge for the prevention of thermal pollution and take all necessary steps that can serve this purpose. Every human can make a difference by making an individual effort. The industries, power plants and factories should also give it a serious thought. The collected effort of humans will definitely solve the problem of thermal pollution and will help in its prevention.
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