CASE STUDYManangatang Water Treatment Plant

(Grampians Wimmera Mallee Water authority)

Country:Australia

Client:• GrampiansWimmeraMalleeWaterauthority

• Location,Manangatang,Victoria.

Approx.100kmwestofSwanHilland4.5hrsdrive

fromMelbourne.

Application:• PolishingDrinkingwater.

The Challange:• MurrayRiverToPotablewater.

• Inletwaterqualityis10-40NTUmostoftheyear,

andinsomecase50-60NTU.

• Colourisaround400Hu.

• Supplyfilteredwateratthepointofdisinfection

oflessthan1NTU,(Note,potentialfuturenewguidelineswillbebetween0.2to0.5NTUforpotablewater),

ataFlowrateof18m³/hr(5L/sec)upto21.6m³/hr(6L/sec)andminimalinitialcosttoGWM.

Water source:• MurrayRiver

Flow rate• 18-21m³/hr

Main Target• ReductionofTurbidity(Lessthan1NTU),Colour&TSStoDrinkingwaterGuidelines.

ReductionofCryptosporidium.

 

W A T E R S Y S T E M S

Filtration solution• PrefiltrationattheRiver:Shallowmedia

• Coagulation,MultiMediaFiltration(i.e.DirectFiltration),retentiontank,1xAMF93K

(Automaticmicrofibrefilterforpolishing)

Instrument:

• Turbidity:feedwater,aftermedia,productwater(afterAMF)

• FlowTransmitter:feedandproduct

• PressureTransmitter:feed,aftermedia,afterAMF

Control:

• MainPLCwithSCADAcommunicationandAMF93KPLC

• RemoteControl&Monitoring

Filtration degree• 2µm

Main Results/Acheivment:1. SystemiscontrolledandMonitorRemotely

2. Plantperformedtothedesignrequirementsandachievelessthan1NTU

(Actualperformancelessthan0.5NTU100%ofthetime)

3. OriginallythePlantwasprovidedasapilot(Rentalcontractfor6months).

Afterthepilotperoidclientwashappywiththeresultsandpurchasetheplant.

4. ReduceinTurbidity,andconsequentlyreducedchlorinedemand.

5. Plantisbackwashingapprox.every4-6hours(Frequencyofbackwashisinresponsetofluctuationoffeed

waterquality)withtotalwaterlossoflessthan3%.

 

 

W A T E R S Y S T E M S