Module 3.0 Water Treatment

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Module 3.0Water Treatment Supply
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Whos Who?

• What molecule is considered absolutely essential
  to life (as we know it) on this planet?
• What molecule is called the universal solvent?
• What molecule do we as humans depend heavily upon
  in our daily lives?
• H2O ...

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Obj 3.1 Who uses water?

• We do.
• Municipal uses
• drinking
• fire-fighting
• cooking
• cleaning
• personal hygiene

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Obj 3.1 Who uses water?

• Agricultural uses
• irrigation
• livestock
• Manufacturing uses
• food production
• steel-making
• heating/cooling/cleaning processes

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Obj 3.1 Who uses water?

• Recreational uses
• pools
• conservation areas
• boating
• Commercial uses
• shipping
• transportation

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Obj 3.1 Who uses water?

• natural uses
• fish
• wildlife
• plant life
• power generation
• hydro-electric power
• nuclear power plant cooling

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Who consumes water?

• We do, but
• The water we consume must be potable water
  clean and free of pathogens
• The wastewater we create must be treated in some
  way before returning to the environment
• Both steps require a system

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Obj 3.2 Water Treatment and Supply System

• Deliver potable water to the consumer for
  consumption with adequate
• quality
• quantity
• pressure 350-760 kPa (50-110 psi)

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Obj 3.2 Water Treatment and Supply System

• Provide water for fire-fighting at adequate
• flow rates 30-760 litres/s
• pressure

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Obj 3.3 Steps

• Demand How much water is needed?
• Supply Where does the water come from? What
  type of treatment does it need?
• Distribution How does it get to the consumer?
  How do we maintain quality, quantity and pressure?

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Obj 3.3 Demand

• design year
• existing and future population data
• daily consumption per person
• land use and density information
• commercial, industrial, institutional uses

• Determining the need for water.

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Obj 3.3 Supply

• ground water or surface water
• treatment needed
• impacts of withdrawing water
• topography
• soil and rock type
• permeability
• hydro-geology

• Finding a supply of water?

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Obj 3.3 Distribution

• location of consumers
• location of treatment plant
• topography
• suitable reservoirs, storage , towers
• means of providing pressure
• road network, pipes

• Designing a water distribution system?