ABOUT US
Our vision is to ensure that all Australians have quality drinking water and the highest levels of sanitation and environmental protection
GANDEN Engineers and Project Managers is one of Australia’s leading water industry consultancies. We assist our clients in design, procurement, commissioning and operation of water and wastewater assets, including: –
- Treatment Plants – Water and Sewage
- Water and Sewer Networks – Reservoirs, Pipelines, Pump Stations
GANDEN has completed more than 500 water industry projects, from the Torres Strait Islands to Tasmania.
With employees on the Gold Coast, Brisbane, Melbourne, Cairns and Rockhampton, we service our clients throughout the Asia Pacific Region, especially in remote locations. We work with:
- Local and State Government
- Water Companies
- Mining Companies
- Construction Companies
- Partner Consultancies
LATEST NEWS
Brisbane Office Opens
Melbourne Office Opening Soon
Proud to Support Local Sporting Teams
Mackay Mirani Commissioning
Cairns Office Opens
Another GANDEN Award
Luggage Point Dewatering Up and Running
BioWin Training
Pipes Slot In - No Modification
Darwin's Leanyer Sanderson Upgrade Complete
High Risk Install Goes Smoothly
Oxley Creek Centrifuge Running
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Brisbane Office Opens
We are proud to announce the opening of the new Brisbane office at Top Floor, 1159 Sandgate Road, Nundah. -
Melbourne Office Opening Soon
We welcome Cameron Hopcraft who has joined us in Melbourne. We have been planning a Melbourne presence for some time to better service existing valued clients. Despite COVID-19 we are pushing ahead with our plans. -
Cairns Office Opens
In order to better serve our valued clients in North Queensland, GANDEN is proud to announce the opening of our Cairns office in January 2020. GANDEN's Aaron Bull has returned home to be the North Queensland Manager. Feel free to call in. Suite 1, 212-216 Draper Street Parramatta Park, QLD Aaron Bull - 0447 210 315 -
Another GANDEN Award
GANDEN is proud to have won its third Gold Coast Business Excellence award in the last five years. This is fantastic recognition by the Gold Coast business community of GANDEN's commitment to assisting university students in their studies and providing graduate employment possibilities. -
BioWin Training
Thanks to Peter Dold - President of EnviroSim Associates Ltd for taking the time to give our process team a two-day private advanced BioWin course in our offices on the Gold Coast. Even though we use BioWin on all our wastewater treatment plant designs, Peter gave us lots of tips and insights into this very comprehensive software. -
High Risk Install Goes Smoothly
GANDEN provided design services to Demacs Constructions for the installation of a major Recycled Water Main on Bermuda Street for Gold Coast Water. Critical for this project to succeed in the short window of time to install was ensuring dimensional accuracy of the new pipe connections. This was achieved using 3D laser scanning of the existing piping, then scanning of the manufactured pipeline in the workshop prior to installation and feeding this information back into the 3D model.
DIGITAL ENGINEERING
GANDEN has invested heavily in IT infrastructure, software and training. Below is a sample of the digital engineering tools we use.
3D Design and BIM
Wastewater Process Modelling
Sewer Network Modelling
Water Network Modelling
Pipe Stress Analysis
Structural Analysis
Finite Element Analysis
CFD Modelling
Transient Analysis
Remote Plant Monitoring
Reverse Engineering
Financial Modelling
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Wastewater Process Modelling
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Sewer Network Modelling
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Water Network Modelling
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Pipe Stress Analysis
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Structural Analysis
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Finite Element Analysis
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CFD Modelling
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Transient Analysis
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Remote Plant Monitoring
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Reverse Engineering
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Financial Modelling
Wastewater Treatment
Ballarat STP Upgrade
Grenfell STP Major STP Upgrade
Mirani WRF Stage 1 Upgrade
Mirani WRF Stage 2 Upgrade
South Lismore STP Major Upgrade
Oxley Creek STP Inlet Works, Grit Removal and Screening Handling Equipment
Darwin STP Major Upgrade
Luggage Point Dewatering Major Upgrade
Oxley Creek Centrifuge Upgrade
Ravenshoe STP Major Upgrade
Awonga Point MBR Major Nutrient Removal Upgrade
Palm Island STP Major Upgrade
Nambour MBR Plant Major Upgrade
Membrane Maintenance
Membrane Bioreactor Upgrade
Childers STP Major Upgrade
GIN Gin STP Major upgrade
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Mirani WRF Stage 1 Upgrade
Project Management, Process, Mechanical and Civil Design and Commissioning Supervision for a new Inlet Works, Odour Control Facility, Service Water and Fire Water Facilities at Mackay Regional Council's 10,000 EP Mirani Water Recycling Facility (WRF) in North Queensland. GANDEN was the process designer, civil designer and commissioning lead. GANDEN also performed the role of Project Manager for the entire project. -
Membrane Bioreactor Upgrade
Technical Advisory Services for the upgrade of an oxidation ditch to a MBR for a major mining company in Far North Queensland.
Water Treatment
Molendinar WTP Backwash Upgrade
Remote Communities Water and Wastewater Condition Assessments - Queensland Government
Herberton WTP Upgrade
Esk Intake Tower
Mudgeeraba WTP Sludge Handling Upgrade
Mudgeeraba Clarifier Upgrade
Nhulunbuy (Gove) Water Supply Chlorination Upgrade
Landers Shute Ozone
Town Water Disinfection Upgrades -
Raw Water Pumps and Electrical Upgrade
Chemical Dosing Upgrades
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Remote Communities Water and Wastewater Condition Assessments - Queensland Government
Condition assessments and upgrade assessments for water and sewage treatment plants for various remote indigenous communities - Palm Island, Torres Strait Islands, Woorabinda, Mornington Island, Doomadgee, Pormpuraaw -
Herberton WTP Upgrade
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Nhulunbuy (Gove) Water Supply Chlorination Upgrade
Investigation, design and documentation of a new chlorine gas dosing system for the town of Gove in the Northern Territory. -
Landers Shute Ozone
GANDEN’s role on this project was to undertake detailed design for the replacement of three existing Trailigaz Ozone generator units with three new Wedeco Ozone generator units for the Landers Shute WTP on the Sunshine Coast. This required P&ID, civil, structural and mechanical detailed design drawings outlining the modifications to ventilation, cooling water pumps, plinths and pipework required to install the new Ozone Generators.
Desalination
Sydney Desalination Plant Storm Recovery
Desalination Options Study NSW
San Andrés Desalination Plant (Colombia)
Amrun RO Plant Expert Review
Ballina Effluent Reuse Study
Palm Island Emergency Desalination
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Sydney Desalination Plant Storm Recovery
On 16 December 2015, the Sydney Desalination Plant suffered severe damage from a tornado. GANDEN personnel were seconded into a team of specialist technical advisors to assist the insurance loss adjusters. GANDEN also had people on site designing and operating a temporary SBS dosing system to ensure the $55m worth of RO membranes were preserved. GANDEN’s assessment of the storm damage to the main process building of the desalination plant was that the reverse osmosis membranes were at risk due to the draining of sodium bisulphite preservation solution. GANDEN designed a temporary SBS batching and dosing system that enabled the reverse osmosis system to be refilled. These actions saved the membranes and prevented a substantial claim for loss of the membranes. -
Desalination Options Study NSW
Study of desalination options for a Water Authority in northern NSW -
Amrun RO Plant Expert Review
Third Party Expert Review of a New reverse osmosis desalination plant treating brackish water and of a new sewage treatment plant for the $2b Amrun mine expansion in Far North Queensland. -
Ballina Effluent Reuse Study
Ballina Shire Council’s effluent reuse scheme is designed to provide recycled water to a portion of Ballina’s residential customers, commercial customers and for open space irrigation. Due to the coastal location, the plant influent sometimes has elevated levels of total dissolved solids from salt water inflow into the sewerage system. GANDEN was contracted by Council to develop, assess and compare a range of feasible options and recommendations for the on-site desalination of recycled water at Ballina WWTP to meet the TDS limit imposed by Council. Options considered included reverse osmosis, nanofiltration, electrodialysis reversal, capacitive deionisation, ion exchange, thermal distillation and solar distillation. -
Palm Island Emergency Desalination
Due to drought conditions causing low levels in the two town’s water supply dams, the Queensland Department of Infrastructure, Local Government and Planning required an emergency desalination scheme to be investigated and tendered for the town. GANDEN provided technical advice for the investigation of the intake, outfall and treatment plant site options. GANDEN also wrote the technical specification for the tender documents and assisted in the evaluation of the tenders.
Water Distribution
Beaudesert WTP Water Storages
Narrabri Water Supply Augmentation
Gold Coast Water Recycled Water Mains Replacement
Proserpine to Cannonvale Pipeline and Pump Station
Water Tower Condition Assessment
Beechwood Water Supply Pipeline Design
Pormpuraaw Reservoir Design and Documentation
Gold Coast Recycled Water Main
Palm Island Water Supply
Oxley Highway Pipeline Relocation Design
QUU Potable Water Boosters
Gilston Reservoir Reclorination
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Beaudesert WTP Water Storages
Provision of 5.1 ML of additional water storage for the Beaudesert Water Treatment Plant for Seqwater. Scope included design of sewer diversions, reservoirs, drainage and access roads -
Gold Coast Water Recycled Water Mains Replacement
Design of a replacement of a Y junction. This project required high dimensional accuracy as the shutdown window was short. This was achieved using laser scanning of the existing pipe, then scanning of the constructed pipe in the workshop. This scanned data was then input into the model to check the manufacture of the pipe before dispatch to site. The construction was performed without any site modification. -
Water Tower Condition Assessment
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Beechwood Water Supply Pipeline Design
Civil design and documentation of a new water main approximately 6km in length from the existing Rosewood reservoir to Beechwood village. The main included approximately 410m of DN600 DICL and approximately 5400m of DN200 (various materials), including an under bore of the Hastings River. -
Pormpuraaw Reservoir Design and Documentation
Tender design and documentation of the concrete reservoir including SCADA upgrades, gas chlorine dosing system, site earthworks/landscaping, and galvanised steel framed roofing. Pormparaaw is a remote indigenous community in Far North Queensland. -
Palm Island Water Supply
GANDEN was engaged to assess the capacity and condition of the existing Palm Island water supply infrastructure including the: - Water supply dam capacities and operation, The water treatment plant and The water distribution network, including producing a network model. As part of the town water and sewerage infrastructure review, GANDEN also reviewed the sewage treatment plant and sewerage network. -
Oxley Highway Pipeline Relocation Design
Civil design and documentation for relocation of the various pipelines to cater for the Oxley Highway upgrade inland from Port Macquarie. Works included pipeline civil design, hydraulic modelling, specification writing and organising survey, geotechnical and potholing. -
QUU Potable Water Boosters
Options analysis and detailed design of 2 replacement potable water booster pump stations located in Ashgrove and Toowong in Brisbane. The existing pump stations remained operational during the construction period, with only a small window available for change over. The new pump stations were designed to allow for construction to be completed before the existing pump stations were taken off line. Both pump stations are located in constrained spaces within road reserves and in close proximity to existing houses, parkland and the Toowong cemetery. Consultation was undertaken with the Council arborist and parks officers to ensure the protection of existing trees and to select a location which minimised the impact on public amenity. A low profile retractable acoustic cover was incorporated into the design to provide weather and and vandalism protection and to minimise the noise and visual impact on the surrounding residents. In order to accommodate large variances in flow rate and head, a 4 pump arrangement was adopted at both sites, with one small jockey pump for overnight low flow periods and 3 large pumps for day time and fire flow operation. -
Gilston Reservoir Reclorination
The City of Gold Coast (Gold Coast Water) required a re-chlorination facility on its reservoir at Gilston. GANDEN provided the concept design and documentation and assisted Gold Coast Water throughout the detailed design review and construction period.
Sewerage Networks
Howard SPS and Gravity Sewer
Cairns SPS ED6, R19 & SH1 Upgrades
Cairns SPS B2, B3, T14 & R28 Upgrades
Gold Coast Sewer Rising Mains RPEQ
Gold Coast Water Emergency Storages
Brisbane Sewer Doors
Weipa Pump Station Upgrades
Palm Island Sewer Network Review and Hydraulic Modelling
Cairns Pump Stations Condition Assessments
Toowoomba SNEP
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Howard SPS and Gravity Sewer
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Cairns SPS ED6, R19 & SH1 Upgrades
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Cairns SPS B2, B3, T14 & R28 Upgrades
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Gold Coast Sewer Rising Mains RPEQ
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Gold Coast Water Emergency Storages
Design of emergency storages for 11 pump stations around the Gold Coast across 2 packages. -
Weipa Pump Station Upgrades
GANDEN provided project management, full design and commissioning assistance for the upgrade of two pump stations in Far North Queensland. The pump stations were converted from dry wells to wet wells and buildings above demolished. Blockages were a regular occurrence. Since the pump stations were commissioned, there has been no reported blockages. -
Palm Island Sewer Network Review and Hydraulic Modelling
Provision of technical advisory services -
Cairns Pump Stations Condition Assessments
Condition assessment and upgrade options advisory services for three pumps stations in Cairns, North Queensland.
Environmental including Effluent Reuse
Stormwater Treatment Upgrade
Pimpama WRF Membrane Maintenance
Pine Rivers Slope Stabilisation and Pipe Refurbishment
Darwin Odour Control
City of Gold Coast Bin Bays
Moomba Camp STP Environmental Licensing
Fairfield STP Recycled Water Upgrade
South Stradbroke Environmental Licensing
Evapotranspiration Bed Design
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Darwin Odour Control
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City of Gold Coast Bin Bays
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Moomba Camp STP Environmental Licensing
Preparation of documentation to allow the licensing of a new sewage treatment plant and associated effluent irrigation scheme for a mining camp in Moomba, South Australia. -
Fairfield STP Recycled Water Upgrade
Design of recycled water system storage and treatment including Storage Structure, Flow Diversion Chamber, Sodium Hypochlorite Dosing, Transfer Pump Station, Sampling System, Shade Structure and Pipelines. -
South Stradbroke Environmental Licensing
Negotiating the Environmental authority for two membrane bioreactor sewage treatment plants and irrigation disposal operated by Council in a national park. The project required close liaison with the Queensland Department of Environment and Heritage. The scope of work also included MEDLI modelling to determine the size of the effluent irrigation area. -
Evapotranspiration Bed Design
Design of a evapotranspiration bed for effluent disposal, including MEDLI Modeling, for a major mining company.