The history of North Stradbroke Island's wetlands: defining natural climate variability in south-east Queensland and improving ecosystem management. South-east Queensland has among the fastest growing populations in Australia. It has also experienced severe drought lasting more than a decade. These combined pressures have led to the expenditure of more than $9 Billion on water resource development. However, it is not known whether the current drought is part of a natural cycle (or, importantly, ....The history of North Stradbroke Island's wetlands: defining natural climate variability in south-east Queensland and improving ecosystem management. South-east Queensland has among the fastest growing populations in Australia. It has also experienced severe drought lasting more than a decade. These combined pressures have led to the expenditure of more than $9 Billion on water resource development. However, it is not known whether the current drought is part of a natural cycle (or, importantly, if it represents the worst extremes in such a cycle). We will determine whether this is the case and, in doing so, contribute to national and international debates about the role of human-induced vs natural climate change.Read moreRead less
Dynamic Release Mechanisms for Phosphorus in Shallow Ponds and Lakes. Phosphorus release from submerged sediments is controlled by the physical and chemical environment. The mechanisms are well understood where thermal stratification is persistent but the behaviour during transient episodes has not been properly addressed. The aim is to study a dynamic chemical and hydraulic environment and develop a model of phosphorus release under these conditions. Algal blooms, which rely on high nutrient co ....Dynamic Release Mechanisms for Phosphorus in Shallow Ponds and Lakes. Phosphorus release from submerged sediments is controlled by the physical and chemical environment. The mechanisms are well understood where thermal stratification is persistent but the behaviour during transient episodes has not been properly addressed. The aim is to study a dynamic chemical and hydraulic environment and develop a model of phosphorus release under these conditions. Algal blooms, which rely on high nutrient concentrations, pose a significant threat to waterways yet a process-based description of phosphorus release is not yet possible. The outcome will be a verified model of phosphorus release mechanisms suitable for a range of water bodies.Read moreRead less
Control Of Aggregate Structure, Settling And Dewatering In Mineral Tailings Processing. Modification of aggregate structures in mineral processing will lead to improved dewatering in tailings operations. In mine site rehabilitation and tailings utilisation, technology developed in this project may save not only millions of dollars in more efficient processing and tailing deposition but also help to better reuse our limited national water resources.
Desalting reclaimed wastewater to safeguard Virginia's horticultural industries. Virginia is a major horticultural region of South Australia undergoing rapid expansion. Groundwater resources are depleted and reclaimed sewage effluent from Adelaide is required for irrigation. Unfortunately, the effluent is frequently too saline. Large-scale desalting is being considered. A pilot-scale plant will be built to evaluate suitable desalting processes (e.g. reverse osmosis) for reducing the effluent ....Desalting reclaimed wastewater to safeguard Virginia's horticultural industries. Virginia is a major horticultural region of South Australia undergoing rapid expansion. Groundwater resources are depleted and reclaimed sewage effluent from Adelaide is required for irrigation. Unfortunately, the effluent is frequently too saline. Large-scale desalting is being considered. A pilot-scale plant will be built to evaluate suitable desalting processes (e.g. reverse osmosis) for reducing the effluent's salt content. Original research will: (i) synthesize the best combination of technologies to produce effluent streams of varying salinity for matching different crop requirements; and (ii) optimise delivery and storage of effluent streams using new storage(s) and the region's multiple aquifer and surface storages.Read moreRead less
Desalination Options for Metropolitan Adelaide's Water Supply & Implications for Water Resource Allocation to Regional Communities. This project will present a proposal for water supply augmentation by desalination to alleviate rising salinity concerns and supply uncertainty of River Murray water supplies to metropolitan Adelaide in South Australia. It will investigate the feasibility of desalination options available and their consequences for regional agriculture and industry that rely on rive ....Desalination Options for Metropolitan Adelaide's Water Supply & Implications for Water Resource Allocation to Regional Communities. This project will present a proposal for water supply augmentation by desalination to alleviate rising salinity concerns and supply uncertainty of River Murray water supplies to metropolitan Adelaide in South Australia. It will investigate the feasibility of desalination options available and their consequences for regional agriculture and industry that rely on river water from metropolitan water supply pipelines for their economic survival. The project outcomes will have significant implications for government water policies and private and public sector water-infrastructure investment. It will be the first detailed study of large-scale municipal desalting costs under Australian conditions.Read moreRead less
Development of innovative technologies for oil production based on the advanced theory of suspension flows in porous media. The project will significantly improve the commercial and technological competitiveness of the Australian oil industry and will result into immediate financial benefits for the largest Australian oil company SANTOS. The outcomes will find their application in a number of developing environmental and chemical engineering technologies, which fall into Australian Research Prio ....Development of innovative technologies for oil production based on the advanced theory of suspension flows in porous media. The project will significantly improve the commercial and technological competitiveness of the Australian oil industry and will result into immediate financial benefits for the largest Australian oil company SANTOS. The outcomes will find their application in a number of developing environmental and chemical engineering technologies, which fall into Australian Research Priorities such as clean water production, emission reduction and storage of green house gas, and industrial waste management. The new theory and models to be developed in this project will provide quantitative tools for comprehensive assessment of large-scale geological and industrial projects. The project will also train a high quality research and engineering personnel.Read moreRead less
Improving flow management for the control of blue-green algal blooms. Cyanobacterial (blue-green algal) blooms are a major water quality problem worldwide. They are toxic, produce odours and are estimated to cost around $200 million/year in Australia alone. Flow management is one of the most promising approaches for combating the cyanobacterial bloom problem in rivers. In this research, a new risk-based approach for quantifying the impact of flow management on cyanobacterial blooms is developed, ....Improving flow management for the control of blue-green algal blooms. Cyanobacterial (blue-green algal) blooms are a major water quality problem worldwide. They are toxic, produce odours and are estimated to cost around $200 million/year in Australia alone. Flow management is one of the most promising approaches for combating the cyanobacterial bloom problem in rivers. In this research, a new risk-based approach for quantifying the impact of flow management on cyanobacterial blooms is developed, which can be applied to rivers world wide. The utility of the approach is demonstrated for key sites in the Murray-Darling basin, providing a valuable decision support tool for river managers.Read moreRead less
Cost-effective integrated engineering and "community partnerships" solution to a latent water policy issue: private dam management and flood safety. Project aims to further develop an engineering model for cost-effective innovative flood safety design/review for private dams in Southeastern Australia and integrate this with community impact assessment. Together, this is a "community partnerships" solution to a significant water policy vacuum on private dam safety and flood policy. Expected outco ....Cost-effective integrated engineering and "community partnerships" solution to a latent water policy issue: private dam management and flood safety. Project aims to further develop an engineering model for cost-effective innovative flood safety design/review for private dams in Southeastern Australia and integrate this with community impact assessment. Together, this is a "community partnerships" solution to a significant water policy vacuum on private dam safety and flood policy. Expected outcomes: improved risk transparency for dam owners and State Government, minimising costs of failures, ie. loss of life, damage to public and private infrastructure and environment; giving owners an affordable and effective design/review procedure to better manage their dams, providing data on community responses and water law reform proposals consonant with international best-practice.Read moreRead less
Determination of factors effecting pathogen removal in lagoons treating and storing effluent for reuse. Waste stabilisation ponds are a preferred treatment option for wastewater in many rural and remote communities within Australia and overseas because of their low-tech, robust structure. Reducing numbers of pathogens in the final treated effluent of these systems so that it can be reused, will minimise risks to the public and the environment and improve management of this sustainable water reso ....Determination of factors effecting pathogen removal in lagoons treating and storing effluent for reuse. Waste stabilisation ponds are a preferred treatment option for wastewater in many rural and remote communities within Australia and overseas because of their low-tech, robust structure. Reducing numbers of pathogens in the final treated effluent of these systems so that it can be reused, will minimise risks to the public and the environment and improve management of this sustainable water resource throughout the region. This research also provides an opportunity for Australia to export knowledge on the efficient use of these systems to 2.4 billion people worldwide currently without access to affordable sanitation.Read moreRead less
Impact of recycled and low quality process water on sustainable mineral processing practices. Water is in short supply and needs to be considered as a 'key reagent'. The quality of this reagent can vary widely. For a sustainable mineral processing practice, the use of recycled or low quality/saline process water will be essential for a plant to operate in the future. The major benefit is recognition that significant recycle of process water for flotation is achievable if simple water quality con ....Impact of recycled and low quality process water on sustainable mineral processing practices. Water is in short supply and needs to be considered as a 'key reagent'. The quality of this reagent can vary widely. For a sustainable mineral processing practice, the use of recycled or low quality/saline process water will be essential for a plant to operate in the future. The major benefit is recognition that significant recycle of process water for flotation is achievable if simple water quality control and management practices are implemented. In addition, a better understanding and control of water quality in recycled/saline process water may lead to improved flotation stability and performance, and reduced reagent consumption.Read moreRead less