Module 3.0Module 3.0Water Treatment & SupplyWater Treatment & Supply

Who’s Who?Who’s Who?

What molecule is considered What molecule is considered absolutely essential to life (as we know absolutely essential to life (as we know it) on this planet?it) on this planet?

What molecule is called the “universal What molecule is called the “universal solvent”?solvent”?

What molecule do we as humans What molecule do we as humans depend heavily upon in our daily lives?depend heavily upon in our daily lives?

… … HH22O ...O ...

Obj 3.1: Who uses water?Obj 3.1: Who uses water?

We do.We do. Municipal uses:Municipal uses:

– drinking drinking – fire-fightingfire-fighting– cookingcooking– cleaningcleaning– personal hygienepersonal hygiene

Obj 3.1: Who uses water?Obj 3.1: Who uses water?

Agricultural uses:Agricultural uses:– irrigationirrigation– livestocklivestock

Manufacturing uses:Manufacturing uses:– food productionfood production– steel-makingsteel-making– heating/cooling/cleaning processesheating/cooling/cleaning processes

Obj 3.1: Who uses water?Obj 3.1: Who uses water?

Recreational uses:Recreational uses:– poolspools– conservation areasconservation areas– boatingboating

Commercial uses:Commercial uses:– shippingshipping– transportationtransportation

Obj 3.1: Who uses water?Obj 3.1: Who uses water?

natural uses:natural uses:– fishfish– wildlifewildlife– plant lifeplant life

power generation:power generation:– hydro-electric powerhydro-electric power– nuclear power plant coolingnuclear power plant cooling

Who consumes water?Who consumes water?

We do, but…We do, but… The water we consume must be The water we consume must be

potable water … clean and free of potable water … clean and free of pathogens pathogens

The wastewater we create must be The wastewater we create must be treated in some way before treated in some way before returning to the environmentreturning to the environment

Both steps require a “system”Both steps require a “system”

Obj 3.2: Water Treatment Obj 3.2: Water Treatment and Supply Systemand Supply System

Deliver potable water to the Deliver potable water to the consumer for consumption with consumer for consumption with adequate:adequate:– qualityquality – quantityquantity– pressure 350-760 kPa (50-110 psi)pressure 350-760 kPa (50-110 psi)

Obj 3.2: Water Treatment Obj 3.2: Water Treatment and Supply Systemand Supply System

Provide water for Provide water for fire-fightingfire-fighting at at adequate:adequate:– flow rates 30-760 litres/sflow rates 30-760 litres/s– pressurepressure

Obj 3.3: StepsObj 3.3: Steps

Demand: Demand: How much water is How much water is needed?needed?

Supply: Supply: Where does the water Where does the water come from? What type of come from? What type of treatment does it need?treatment does it need?

Distribution: Distribution: How does it get to the How does it get to the consumer? How do we maintain consumer? How do we maintain quality, quantity and pressure?quality, quantity and pressure?

Obj 3.3: DemandObj 3.3: Demand

design year design year existing and future existing and future

population datapopulation data daily consumption per daily consumption per

personperson land use and density land use and density

informationinformation commercial, commercial,

industrial, institutional industrial, institutional usesuses

Determining Determining the need for the need for water.water.

Obj 3.3: SupplyObj 3.3: Supply

ground water or ground water or surface watersurface water

treatment neededtreatment needed impacts of impacts of

withdrawing waterwithdrawing water topographytopography soil and rock typesoil and rock type permeabilitypermeability hydro-geologyhydro-geology

Finding a Finding a supply of supply of water?water?

Obj 3.3: DistributionObj 3.3: Distribution

location of consumerslocation of consumers location of treatment location of treatment

plantplant topography topography suitable reservoirs, suitable reservoirs,

storage , towersstorage , towers means of providing means of providing

pressurepressure road network, pipesroad network, pipes

Designing a Designing a water water distribution distribution system?system?