Douglas WTP Upgrade - Phase 2

Client:

Townsville City Council

Location:

Townsville, Queensland

Service:

Water treatment

Capacity:

232 ML/d

Value:

AUD $7.5 M

Problems:

Various treated water quality, capacity and process control issues.

Solutions:

New chemical dosing systems, analysers, instrumentation and control measures.

Benefits:

Improved chemical processes, stability of treated water to mains, treatment capacity, monitoring and control.  

Product:

Chemical storage & dosing systems, analyser panels, pump stations and piping systems.

Completion Date:

September 2009

Contact:

Mark Aitken - Aquatec Maxcon

Aquatec Maxcon provided all mechanical and electrical / control works for the upgrade to Douglas WTP Modules 1 – 4. The upgrade was comprised of the following main elements:

• 140 tonne hydrated lime storage silo, dry feeding, slurry preparation and dosing system to four separate plant dosing points.
• Carbon dioxide storage, gas dissolution and solution dosing system.
• ACH coagulant bulk storage and dosing system.
• Polymer filter aid batching, solution preparation and dosing system.
• Service water pumping station and reticulation system.
• On-line water quality analyser panels and associated sample water reticulation systems.
• Filter upgrade works to Module 3 for change of operation to influent flow splitting plus constant level mode.
• Filter upgrade works to Module 4 including inlet channel flocculation mixers and backwash system pressure relief system.
• Process instrumentation.
• Electrical and control works.

Other related projects:

• Coffs Harbour DAFF WTP (2009) ,42 ML/d design capacity
• Gympie WTP (2010) filter underdrain and media replacement
• bcaa Enoggera WTP (2008) upgrade project.
• Kalkie WTP (2007) upgrade to dual media filtration, 200 L/s
• Ararat DAFF WTP Grampians Water (2000), 200 L/s
• Corowa DAFF WTP Corowa Shire Council (2002), 200 L/s