WASTEWATER TREATMENT

Grenfell STP Major STP Upgrade

Ballarat South STP Upgrade

Darwin STP Major Upgrade

Mirani WRF Stage 1 Upgrade

Mirani WRF Stage 2 Upgrade

South Lismore STP Major Upgrade

Maroochydore Sludge Thickening Upgrade

Oxley Creek STP Inlet Works, Grit Removal and Screening Handling Equipment

Luggage Point Dewatering Major Upgrade

Oxley Creek Centrifuge Upgrade

Ravenshoe STP Major Upgrade

Cloncurry Effluent Reuse

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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Grenfell STP Major STP Upgrade

Process, Mechanical, Civil, Structural and Electrical Design of a new 2,500 EP IDEA / SBR plant for Grenfell in central New South Wales. (Current Project)

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Ballarat South STP Upgrade

GANDEN provided designs for upgrades to multiple areas around the Ballarat South STP. The designs were able to be performed remotely during the period of the 2020 COVID-19 restrictions by the use of point cloud laser scanning.

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Darwin STP Major Upgrade

Process, Hydraulic, Civil and Mechanical Design of an inlet works with band screens and grit removal and odour control for a 50,000 EP Leanyer Sanderson sewage treatment plant in Darwin.

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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.

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Mirani WRF Stage 2 Upgrade

2 Train SBR, Class A+ Membrane Plant, Sludge Digestion and Dewatering

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South Lismore STP Major Upgrade

Civil, Hydraulic and Mechanical Design and Drafting for the 20,000 EP Lismore STP Upgrade. This plant employed Sequencing Batch Reactor treatment, with cloth filters for effluent polishing and belt filter press.

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Maroochydore Sludge Thickening Upgrade

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Oxley Creek STP Inlet Works, Grit Removal and Screening Handling Equipment

Process, Hydraulic, Civil and Mechanical Design for a 270,000 EP STP in Brisbane.

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Luggage Point Dewatering Major Upgrade

Process, Mechanical, Civil and Structural Design for new sludge transfer system, centrifuges, polymer dosing, MHL dosing, service water and centrate pumping for the 1,000,000 EP Luggage Point STP in Brisbane.

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Oxley Creek Centrifuge Upgrade

Process, Hydraulic, Civil and Mechanical Design for a 270,000 EP STP in Brisbane.

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Ravenshoe STP Major Upgrade

Process, Mechanical, Hydraulic, Civil Design and Commissioning of a new 1,500 EP MBR Plant in North Queensland.

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Cloncurry Effluent Reuse

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Awonga Point MBR Major Nutrient Removal Upgrade

Process, Mechanical, Civil, Structural and Electrical Design and Commissioning of an upgrade to a 8,000 EP MBR plant to achieve 1mg/L Ammonia, 5mg/L Total Nitrogen, 1mg/L Total Phosphorus in Far North Queensland.

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Palm Island STP Major Upgrade

Process, Mechanical, Civil, Hydraulic, Electrical and Controls Design and Commissioning of a new 4,000 EP SBR in North Queensland.

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Nambour MBR Plant Major Upgrade

Provision of Technical Advisory Services to Unitywater for the 40,000 EP Upgrade in the Sunshine Coast.

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Membrane Maintenance

Maintenance of UF membranes, including Siemens Memcor and Zeeweed, at several sites

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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.

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Childers STP Major Upgrade

Detailed Design and Tender Documentation for a major upgrade to a Sewage Treatment Plant in Queensland (current Project)

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GIN Gin STP Major upgrade

Detailed Design and Tender Documentation for an upgrade of a trickling filter to a SBR in Queensland (Current Project)

SEWERAGE NETWORKS

Metropolitan Wastewater Program

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Howard SPS and Gravity Sewer

Cairns SPS ED6, R19 & SH1 Upgrades

Cairns SPS B2, B3, T14 & R28 Upgrades

Sydney Water Mascot OCU

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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Metropolitan Wastewater Program

GANDEN has teamed with Urban Utilities, Fulton Hogan and SMEC to deliver upgrades to the sewer networks in the Brisbane metropolitan area. GANDEN are providing design and commissioning management services for the five-year program.

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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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Sydney Water Mascot OCU

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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.

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Brisbane Sewer Doors

The Sewer Doors Project consisted of the design of wedge gate and knife gate valves to be retrofitted to 35 pump stations around the Brisbane area.

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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.

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Palm Island Sewer Network Review and Hydraulic Modelling

Provision of technical advisory services

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Cairns Pump Stations Condition Assessments

Condition assessment and upgrade options advisory services for three pumps stations in Cairns, North Queensland.

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Toowoomba SNEP

The Toowoomba Sewer Network Enabling Project comprised the design of three pump stations, emergency storages and rising mains.

WATER TREATMENT

Molendinar WTP Backwash Upgrade

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Branyan Water Treatment Plant 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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Molendinar WTP Backwash Upgrade

Process, Mechanical, Civil, Structural and Hydraulic Design of an upgrade to the backwash system, including pumps, blowers, pipework, generator and instrumentation (Current Project)

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Branyan Water Treatment Plant Upgrade

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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

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Herberton WTP Upgrade

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Esk Intake Tower

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Mudgeeraba WTP Sludge Handling Upgrade

Process, Mechanical, Civil, Structural and Hydraulic Design of an upgraded sludge handling facility at the Seqwater Mudgeeraba WTP on the Gold Coast.

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Mudgeeraba Clarifier Upgrade

GANDEN was engaged to design new stainless-steel launders at the Mudgeeraba Water Treatment Plant on the Gold Coast.

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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.

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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.

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Town Water Disinfection Upgrades -

GANDEN assisted in the design and installation of sodium hypochlorite dosing upgrades for the town of Weipa, Far North Queensland.

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Raw Water Pumps and Electrical Upgrade

Mechanical and electrical review and documentation for new raw water pumps and VSDs in NSW.

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Chemical Dosing Upgrades

Upgrade to Carbon Dioxide, Soldium Hydroxide and Aluminium Chlorohydrate dosing systems at a water treatment plant in NSW

WATER NETWORKS

Beaudesert WTP Water Storages

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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

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Narrabri Water Supply Augmentation

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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.

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Proserpine to Cannonvale Pipeline and Pump Station

Design and documentation of a pump station and 10 km 500 DICL pipeline, including hydraulic modelling using Bentley WaterCAD and water hammer analysis using WATHAM.

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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.

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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.

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Gold Coast Recycled Water Main

GANDEN provided detailed designs and documentation for a new DN750 MSCL recycled water pipeline across Coombabah Creek and demolition and removal of redundant assets.

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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.

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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.

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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.

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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.

DESALINATION

Sydney Desalination Plant Storm Recovery

Membrane Replacement Design

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.

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Membrane Replacement Design

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Desalination Options Study NSW

Study of desalination options for a Water Authority in northern NSW

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San Andrés Desalination Plant (Colombia)

GANDEN provided expert process review of the design of a new 50L/s desalination plant for the Colombian Caribbean Sea island of San Andrés.

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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.

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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.

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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.

ENVIRONMENTAL

Coombabah Cogeneration Facility

Stormwater Treatment Upgrade

Landfill Leachate Treatment Plant

Pimpama WRF Membrane Maintenance

Pine Rivers Slope Stabilisation and Pipe Refurbishment

Canungra Raw Water Intake Pump Station

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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Coombabah Cogeneration Facility

Mechanical, Civil and Structural Design of a new combined heat and power (CHP) cogeneration facility at the Coombabah STP digesters for Gold Coast Water.
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Stormwater Treatment Upgrade

Design and project management of pH and suspended solids control for two stormwater catchments on a refinery for a major mining company.
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Landfill Leachate Treatment Plant
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Pimpama WRF Membrane Maintenance

GANDEN provided quarterly maintenance services for the Siemens Memcor ultrafiltration membranes at the Pimpama Water Recycling Facility on the Gold Coast.
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Pine Rivers Slope Stabilisation and Pipe Refurbishment
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Canungra Raw Water Intake Pump Station
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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.
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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.
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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.
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Evapotranspiration Bed Design

Design of a evapotranspiration bed for effluent disposal, including MEDLI Modeling, for a major mining company.