Sewage/Wastewater Treatment by Sasan Kordrostami
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Transcript of Sewage/Wastewater Treatment by Sasan Kordrostami
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Sewage/Wastewater TreatmentBy: Sasan Kordrostami
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Distribution of earth’s water
Earth's Water
Salin
Fresh Water
Ice-caps and Glaciers
Fresh surface water
LakesSwampsRivers
2%
97%
3%
68.7%
30.1%
0.9%
87%
11%
Source: Gleick (1996)
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Why is it essential? Removes the pollutants
Preserves wildlife and aquatic creatures.
It promotes health concern.
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More than 1000
years ago
• Invention of irrigation • ‘’Mayan civilization ended due to drought’’ Gill, R. B. (2001).
1800’s
• Polluted water caused different diseases.
• "Year of the Great Stink" in London
1972• Human finds the need to protect water
Historical Perspective
•New Generation of treatment ...
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Water pollutants
Water Pollutants
Sewage and Domestic wastes
Pesticides
Fertilizers
Industrial wastes
Heavy metals
Soap and Detergents
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Primary Treatment
Secondary treatment
Tertiary Treatment
Stages of wastewater treatment
Sedimentation
Biological treatment
Nutrient, Toxic compounds and solids
Preliminary Treatment
Removal of large objects
Source: Mujeriego, R., & Asano, T. (1999).
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Thank you
Gill, R. B. (2001). The great Maya droughts: water, life, and death. UNM Press.Gleick, P. H. (1996). Basic water requirements for human activities: Meeting basic needs. Water international, 21(2), 83-92
Mujeriego, R., & Asano, T. (1999). The role of advanced treatment in wastewater reclamation and reuse. Water Science and Technology, 40(4), 1-9.
References: