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

Client:

Coffs Harbour City Council

Location:

Coffs Harbour, New South Wales

Service:

Water treatment

Capacity:

42 ML/d

Value:

AUD $11.5 M

Problems:

Water supply essentially untreated (stabilisation and disinfection only) and not consistently meeting ADWG. Giardia/Cryptosporidium contamination risk. 

Solutions:

Full conventional water treatment plant with multiple barrier pathogen protection. 

Benefits:

Reliable supply of high quality drinking water to consumers.   

Product:

Full conventional treatment plant equipment from raw water pump station to treated water delivery. 

Completion Date:

June 2009

Contact:

Mark Aitken - Aquatec Maxcon

Aquatec Maxcon provided all mechanical works for the complete water treatment plant which comprised of the following main elements:

• Inlet works from Karangi Dam including raw water pump station and surge vessel.
• Pre treatment equipment for Mn oxidation contact tank, PAC contact tank and flash mixer stages.
• Flocculation mixing equipment.
• Dissolved Air Flotation/Filtration (DAFF) equipment (3 train system) including recycle pumping, saturation and dispersion system, float skimmers, filter media, plenum underdrains, backwash and air scour systems.
• Ultraviolet disinfection system, in pipe reactor design.
• Treated water pump station.
• Wastewater handling system including washwater balance tank, gravity sludge thickener and centrifuge mechanical dewatering.
• Service water and compressed air ancillary systems.
• Chemical storage and dosing systems for hydrated lime, CO2, PAC, alum, coagulant aid, filter aid, caustic soda and potassium permanganate.
• Fluoridation and chlorination systems.

Other related projects:

• Mt Beauty DAFF WTP (2010) design and construct
• bcaa Enoggera DAF WTP(2008) upgrade project.
• Kalkie DAFF WTP (2007) design and construct
• Ararat DAFF WTP Grampians Water (2000), 200 L/s
• Corowa DAFF WTP Corowa Shire Council (2002), 200 L/s

Client:

Townsville City Council

Location:

Townsville, Queensland

Service:

Water treatment

Capacity:

80 ML/d

Value:

AUD $1.0 M

Problems:

Filter media clogging and mudballing, filtered water quality, short run times, channelling during backwash. 

Solutions:

Remove and replace filter media, condition and disinfect. 

Benefits:

Longer filter run times, improved filtered water quality, uniform backwash water distribution.   

Product:

Filter and to AWWA B100-01 specification plus gravel to support layers. 

Completion Date:

December 2008

Contact:

Mark Aitken - Aquatec Maxcon

Aquatec Maxcon provided all materials and labour for removal and replacement of the filter media to Module #1 and Module #2 filter banks (total 32 filter cells). The project comprised the following main elements:

• Isolation of filter bank and draining of filter cells.
• Dismantling of connecting pipework and clearing of top access to filter cells.
• Removal of existing filter media and gravel by use of vacuum sucker truck.
• Disposal of existing filter media and gravel.
• Flushing of existing filter floor channels and lateral system.
• Filter cell internal wall inspection and rendering works as required.
• Loading of new filter gravel support and filter sand layers.
• Rinsing, backwashing and surface scraping operations to condition the filter bed for service.
• Disinfection of filter bed according to AWWA C 653-03 guidelines.
• Return of filter cells to service and system commissioning.

Other related projects:

• Gympie WTP (2010) filter underdrain and media replacement
• Seqwater filter media replacement program for 10 water treatment plants (2009-2011)
• Coffs Harbour DAFF plant (2009) ,42 ML/d design capacity
• Kalkie WTP (2007) upgrade to dual media filtration, 200 L/s
• Ararat DAFF WTP Grampians Water (2000), 200 L/s
• Halls Gap DAFF WTP Grampians Water (2000), 45 L/s
• Corowa DAFF WTP Corowa Shire Council (2002), 200 L/s