2017-2018 Spring CEV 451E WATER SUPPLY & ENVIRONMENTAL ... · Koku ve tad Buharla9ma Kalintlsl...
Transcript of 2017-2018 Spring CEV 451E WATER SUPPLY & ENVIRONMENTAL ... · Koku ve tad Buharla9ma Kalintlsl...
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2017-2018 Spring
CEV 451E WATER SUPPLY &
ENVIRONMENTAL SANITATION
Week 2: Water Quality and Flow Characteristics
Instructor: V.Ş. Özgür KIRCA ([email protected])
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WE SAID:
• Very rough & basic estimate for domestic use: 50~100 litres per person per day
• Drinking water= potable water High water quality is necessary!!
• Civilization ↑ water quality ↑water demand ↑
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PARAMETER UNIT2-HOUR COMPOSITESAMPLE
BIOCHEMICAL OXYGEN DEMAND(BOD5)
(mg/L) 50 45
(mg/L) 140 100SUSPENDED SOLIDS (SS) (mg/L) 45 30pH - 6-9 6-9
CHEMICAL OXYGEN DEMAND (COD)
24-HOUR COMPOSITESAMPLE
Domestic wastewater discharge standards for Turkey(discharge to receiving environment)
Population: 10 000-100 000
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WE SAID:
Q=P x qDesign discharge = population x water demand
per capita
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Factors affecting population growth:•Lifetime expectancy•Birth rate•Economics•Migration characteristics•Land use characteristics(industry/agriculture/tourism)•Available land•Traditions/beliefs/governmental politics•....
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Factors affecting water use:•Climate•Water quality and availability•The state of the WW system•Life standards (income)•Traditions/beliefs/habbits•Industrilization ratio•Price and metering type of water•Leakage losses•....
Population characteristics
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Borrowed from: http://en.wikipedia.org/wiki/File:Ganges_river_at_Varanasi_2008.jpeg