2nd lecture pollution pdf

Water Pollution

3rd lecturewww.draloufi.com

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Secret of life ! Why ?

أهمية الماء•

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توزيع المياه في الكرة األرضية

What is Water Pollution?

any physical (temperature, oxygen), chemical (mercury), or biological (disease, sewage) change to water that adversely effects its use by living things .

Types of Water Pollution

• Physical poll.• Chemical poll.• Biological poll.• Radiation poll.• Surface water poll.• Underground water poll.

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Physical pollutionالتلوث الفيزيائي

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Chemical pollutionالتلوث الكيمائي

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Eutrophication

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Eutrophication

Eutrophication, is the addition of artificial or natural substances, such as nitrates and phosphates, through fertilizers or sewage, to an aquatic system.[1] In other terms, it is the "bloom" or great increase of phytoplankton in a water body. Negative environmental effects include hypoxia, the depletion of oxygen in the water, which induces reductions in specific fish and other animal populations. Other species (such as Nomurai Jellyfish in Japanese waters) may experience an increase in population that negatively affects other species.

Eutrophication is apparent as increased turbidity in the northern part of the Caspian Sea.

.Biological pollالتلوث البيولوجي

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.Radiation pollالتلوث اإلشعاعي

مصدر هذا التلوث عن طريق •

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IS RIVER DEAD ?

Next week if ALLAH will

• Surface water poll.

• Underground water poll.

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