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Wanneroo Magnetic Ion Exchange Facility

Original plant

Conventional WTP using aeration, coagulation, clarification and filtration steps

Plant peak capacity

225,000m³/day

Upgrade

Retro-fit magnetic ion exchange technology

Raw water DOC

Up to18mg/l

Finished water DOC

Original plant - <5mg/l; upgraded plant - <2mg/l

MIEX resin particle size

150&#181; to 180&#179;m

Theoretical NOM recovery rate

99.9%

Settling velocity

25m/h

Settling tank upflow rate

10m/h to 15m/h

Return resin regeneration

5% to 15%

Contactor tank capacity

2 x 400m&#179;

Regeneration vessel capacity

2 x 75m&#179;

MIEX plant footprint

1,500m&#179;

<b>Performance Criteria @ 20ml/l Resin Dosage</b>

Contact time

10 minutes

DOC removal

60%

Downstream coagulant reduction

66%

Resin concentration

0.8% to 2% v/v as settled resin

Salt use

15kg/m&#179;

Waste volume

200l/m&#179;

Pilot studies commence

1998

Design phase began

May 2000

Construction began

December 2001

Performance test passed

March 2002

Formal opening

3 May 2002

Plant owner / operators

The Water Corporation of Western Australia

Technology suppliers

Orica Australia

MIEX process development

Orica, SA Water and CSIRO consortium

EPC contractor

Black and Veatch Australia
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