DesignFlow

Water Harvesting and Reuse
Unity Park Biofiltration and Research, SA
Client: City of Salisbury
A component of the Dry Creek and Unity Park harvesting project is research into the best configuration for biofiltration for stormwater treatment specifically for ASR. DesignFlow are commissioned by City fo Salisbury to conduct the research.
 
The research site include of 6 x 200 m2 bio-filtration cells that are extensively instrumented to allow real time flow and water quality data to be collected for each cell. The cells are arranged into three pairs. Each pair of cells has a different combination of filtration media and plant mix, flow distribution,and saturated zone at the base of the filtration beds. Designing the cells in this way, and installing extensive monitoring equipment ,will facilitate research to demonstrate the most efficient configuration for large scale biofiltration treatment of stormwater for ASR in South Australia.
 
Unity Park  

 
Oaklands park wetlands, SA
Client: City of Marion
DesignFlow, as part of a consortium, is responsible for developing a significant stormwater treatment and harvesting system in the south of Adelaide. The project involves a major upgrade of a park area that previously was a driver education centre and will now become a major environmental parkland and stormwater harvesting site. Treated water will be used on to irrigate more than 30 reserves around the City of Marion. The site is adjacent to the Sturt River which will deliver up to 500 ML each year for harvesting.
 
Oaklands4  

 
Sewell Reserve Stormwater Harvesting, Glenroy, VIC
Client: City of Moreland/Melbourne Water
DesignFlow developed the concept, functional and detailed design for a stormwater treatment and harvesting system at Sewell Reserve in collaboration with GbLA. This system will treat runoff from a 14 ha catchment in an attractive 400 m2 bioretention system located within Sewell Reserve. The treated water will be used to irrigate the adjacent oval. A range of Council officers were involved in the project including landscape architects, drainage engineers and operation staff.
 
Sewell3  

 
Waterproofing the West, SA
Client: City of Charles Sturt
DesignFlow is responsible for developing concepts and functional designs for three wetland and biofiltration systems to harvest over 1 GL of stormwater per year. Flow will be captured from the Port Road catchment, as well as diverted water from the Torrens River being treated to sufficient standards to allow aquifer injection.
 
The treatment systems are to be installed in a wide road median, a community park and a private golf course. Concepts and designs are progressing in late 2011.
 

 
Dry Creek stormwater harvesting, SA
Client: City of Salisbury
DesignFlow were responsible for developing a stormwater harvesting concept for Dry Creek. This involved optimising surface water harvesting infrastructure on Dry Creek, determining appropriate treatment facilities and sizing and the designing wetlands and biofiltration systems. This came after helping council develop a successful funding application to the Water for the Future federal fund.
 
The system is designed to capture, divert, treat and inject up to 1.7 GL of water per year into local limestone aquifers for reuse in Salisbury's reticulation network.
 
During the system design, DesignFlow worked closely with Council and engineers Wallbridge and Gilbert to develop construction plans. Planting plans were developed with Council's Landscape Design group and plant nursery. Setting hold points and working closely with council and contractors to problem solve, was also required during construction. In addition, DesignFlow worked with suppliers to develop suitable soil filtration blends for the different cells in the biofilters (see also Unity Park biofiltration and research).
 
Dry Creek  

 
Meridian, VIC
Client: VicUrban
DesignFlow developed a stormwater harvesting and reuse strategy for VicUrban to support an 'urban orchard' concept for Meridian residential development in Dandenong, with Wallbrink Landscape Architects and KLM Spatial. The system captures stormwater draining from all allotments and will supply irrigation to the productive streetscape vegetation throughout the estate. The system is being constructed in 2011 and will provide irrigation until a recycled wastewater main is connected to the development.
 
Meridian  

 
St Clair wetlands, SA
Client: St Clair Joint Venture
DesignFlow are preparing a concept and functional design for a six hectare wetland to be developed as part of a residential development of an old horse racing club in western Adelaide. The wetlands will be integrated into the open space of the new community and will capture, treat and harvest stormwater form a local catchment, as well as diverted water from the River Torrens. Treated flow is intended to be injected into aquifers and is part of a broader Waterproofing The West stormwater recycling project by the City of Charles Sturt.
 

 
Smith Creek stormwater harvesting, SA
Client: Playford City Council
DesignFlow in collaboration with Wallbridge and Gilbert developed a strategy to harvest up to 2.4 GL per year of stormwater from the Smiths Creek catchment. At least seven wetlands will treat stormwater and supply a regional aquifer storage and recovery scheme. DesignFlow undertakes conceptual and functional design of wetlands and supports Wallbridge and Gilbert during detailed design and construction supervision.
 
Smith Creek  

 
Urban Stormwater Harvesting Options Study, SA
Client: Office for Water Security
This recent study identifies 99 potential stormwater harvesting sites across Adelaide that could capture and store up to 60 GL per year. The study was conducted with Wallbridge and Gilbert for the Office for Water Security and DesignFlow were responsible for identification and modelling of all potential harvesting sites across the region. The study considered available open space for treatment as well as storage of treated stormwater using either aquifers or surface storages.
 
Urban Stormwater Harvesting Options Study  

 
Waterproofing the East, SA
Client: Eastern Region Alliance
This project follows on from a feasibility study we completed with engineers Wallbridge and Gilbert for the eastern region of Adelaide (for a consortium of five councils and the Natural Resources Management Board). DesignFlow are now designing the treatment measures (wetlands and biofilters) as part of the W&G team. The treatment sites are all within public parks and therefore community engagement and landscape considerations are paramount.
 
The four treatment sites will harvest approximately 400-500ML each year and treated stormwater will then be stored in underground aquifers and subsequently reticulated to council reserves for irrigation through approximately 40 Km of dedicated pipelines.
 

 
Christie Creek stormwater harvesting, SA
Client: City of Onkaparinga
A concept design was developed in partnership with Wallbridge and Gilbert, Taylor Cullity Lethelan and Australian Groundwater Technologies, for an 850 ML stormwater harvesting project. The project incorporates two significant wetlands, an 80 ML storage dam, 15 km of reticulation pipe and two small flood detention basins that protect road infrastructure. A focus of the project is to provide a community and ecological benefits in addition to the harvesting targets. Soft engineering measures are proposed that incorporate landscape and recreation features that complement the natural environment.
 
The concept design was presented to the City of Onkaparinga and a community group, and is the preferred option of three submissions to deliver the $15M project. The project has since been constructed by the City of Onkaparinga and is in an establishment phase.
 
Christie Creek  

 
Stormwater Harvesting Options for Queensland
Client: Queensland Water Commission
In collaboration with Bligh-Tanner, DesignFlow developed stormwater harvesting options through case studies and costing for the Queensland Water Commission. The work provides strong support for stormwater harvesting as a tool for securing water supplies in South-east Queensland by identifying infrastructure requirements, costs and pre-conditions which are important for successful implementation.