HARDING DAM WTP
CLIENT
The Harding Dam Water Treatment Plant was constructed to supply potable water to the towns of Dampier, Karratha, Cape Lampert, Point Samson, Roeburn and other surrounding areas.
LOCATION
Water Infrastructure Group undertook design and construction of the civil, mechanical and electrical works for the new 60 Megalitre per day Microfiltration Water Treatment Plant. The plant uses chemical dosing to assist the Microfiltration system in treating the water.
VALUE
Design and construction of the civil, mechanical and electrical works for the following: •
Raw Water pump and control valves station
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Gaseous Chemical Disinfection Dosing Facilities
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Gaseous Ammoniation Dosing Facilities
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Fluorosilicic Acid Dosing Facilities
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Sulphuric Acid Dosing Facilities
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Sodium Hydroxide Dosing Facilities
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Poly-Aluminium Chloride Dosing Facilities
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Citric Acid Dosing Facilities
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Clean in Place Membrane Cleaning System
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Polyelectrolyte System Dosing Facilities
DELIVERING A SUSTAINABLE FUTURE
Water Corporation
Harding River Dam Western Australia
$17.5 million
COMPLETION 2004
…continued
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Reject Water Clarifier and Sludge Lagoons
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Process, Potable & Fire Water Services
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Chemical Dosing & Microfiltration Buildings
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Siemens PLC and SCADA system
The Water Treatment Plant is supplied by the Harding River Dam. Depending on the water level in the dam, it is supplied to the WTP through 2 methods:•
During high dam levels, the dam head supplies water to the WTP through hydrostatic pressure. The WTP uses a control valve to regulate the WTP flow.
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During low dam levels, the WTP uses pumps to supply water. The WTP regulates the flow through the WTP via the pump speed.
The WTP uses chemical dosing to augment the Microfiltration system. Such as:•
Sulphuric acid dosing for pH correction prior to flocculation.
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Poly-Aluminium Chloride dosing for flocculant dosing.
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A Flocculation tank for forming of Flocc. particles prior to micro-filtration.
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A 5 train (5 current, 6 future) Microfiltration system.
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Membrane Cleaning systems using Citric acid and Chlorine dosing.
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Gaseous Chlorine and Ammonia dosing for disinfection via chloramination.
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Fluoridation through Fluorosilicic acid dosing.
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Water Quality analyser for online water quality data recording and alarms.
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Reject water clarifier for treating the reject water.
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Sludge Lagoons for drying of the reject sludge
DELIVERING A SUSTAINABLE FUTURE