Functional Analyses of Bacteria Involved in Enhanced Biological Phosphorus Removal from Wastewater. The abundant growth of blue-green algae in global waterways is substantially caused by phosphorus (P) release from wastewater treatment plants. This environmental drama can be mitigated against by P-accumulating bacteria partitioning the P inside their cells. The P-removal process often fails, but since the metabolism of P-accumulating bacteria is unknown, remedial actions are based on conjecture ....Functional Analyses of Bacteria Involved in Enhanced Biological Phosphorus Removal from Wastewater. The abundant growth of blue-green algae in global waterways is substantially caused by phosphorus (P) release from wastewater treatment plants. This environmental drama can be mitigated against by P-accumulating bacteria partitioning the P inside their cells. The P-removal process often fails, but since the metabolism of P-accumulating bacteria is unknown, remedial actions are based on conjecture. This fundamental, knowledge-generating project will address this shortfall and will develop methods to evaluate the activity of P-accumulating bacteria, contributing substantial understanding of their metabolism. The final goal is to promote stable, reproducible P-removal from wastewater.Read moreRead less
Development and implementation of biodiversity information for sustainable management of South Australian groundwater. Clean potable water is one of the most important resources for human health and a successful economy. Increasingly, subterranean aquifers are used for storage and recovery of water. These aquifers contain dynamic ecosystems, but little is known about species composition or about the importance of the presence of various species for water quality. We will use the latest laborator ....Development and implementation of biodiversity information for sustainable management of South Australian groundwater. Clean potable water is one of the most important resources for human health and a successful economy. Increasingly, subterranean aquifers are used for storage and recovery of water. These aquifers contain dynamic ecosystems, but little is known about species composition or about the importance of the presence of various species for water quality. We will use the latest laboratory techniques and DNA identification methods to provide a template for determining ground water diversity and food web dynamics throughout Australia. This project will lead to a better understanding of how to manage ground water in a sustainable manner.Read moreRead less
The characterisation of wastewater distribution patterns for the production of decision support systems for pathogenic risk analysis in water catchments. The project will aim to collate data and map base-level distribution patterns of molecular and microbial markers of human sewage and natural/agricultural contamination with reference to diurnal and seasonal fluctuations. These data will then be used to develop decision support systems that predict contaminant dispersion and identify high-risk c ....The characterisation of wastewater distribution patterns for the production of decision support systems for pathogenic risk analysis in water catchments. The project will aim to collate data and map base-level distribution patterns of molecular and microbial markers of human sewage and natural/agricultural contamination with reference to diurnal and seasonal fluctuations. These data will then be used to develop decision support systems that predict contaminant dispersion and identify high-risk contamination sources. The diurnal collection of data is expected to show significant variations in the measured parameters associated with time of day, light intensity and temperature. Mapping of the sewage and nutrient loads throughout the year will provide base line data for identifying potential hotspots for targeting system upgrades or improved management programs.Read moreRead less
A novel process for removing phosphorus microbiologically from wastewater. Australia is a water limited continent, and its rivers and lakes are priceless assets, but because of climatic conditions, these are especially sensitive to blooms of 'blue green algae'. Some are highly toxic, and water containing them is unsuitable for most purposes. Current technology for P removal requires constructing complex plant configurations, and most of these operate unpredictably and unreliably. This project ....A novel process for removing phosphorus microbiologically from wastewater. Australia is a water limited continent, and its rivers and lakes are priceless assets, but because of climatic conditions, these are especially sensitive to blooms of 'blue green algae'. Some are highly toxic, and water containing them is unsuitable for most purposes. Current technology for P removal requires constructing complex plant configurations, and most of these operate unpredictably and unreliably. This project will develop and fully evaluate a revolutionarily different alternative with a fully aerobic system, capable of being added onto the end of a conventional treatment plant, making protection of rivers and streams simpler and more feasible. Read moreRead less
Biocontrol of foaming in activated sludge plants with bacteriophages. Activated sludge systems are the most widely used processes for treating wastewater in Australia. Yet most eventually suffer from episodes of bulking and foaming, where high levels of biosolids leave the plant with the treated waste, representing serious pollution hazards. Attempts to solve these problems have met with limited success.The highly novel biocontrol method proposed here will provide a specific, environmentally fri ....Biocontrol of foaming in activated sludge plants with bacteriophages. Activated sludge systems are the most widely used processes for treating wastewater in Australia. Yet most eventually suffer from episodes of bulking and foaming, where high levels of biosolids leave the plant with the treated waste, representing serious pollution hazards. Attempts to solve these problems have met with limited success.The highly novel biocontrol method proposed here will provide a specific, environmentally friendly and safe method to protect our rivers, streams and oceans form the harmful consequences of these problemsRead moreRead less
Microbiology of Autothermal Thermophilic Aerobic Digester (ATAD) Systems for Biosolids Disposal in Wastewater Treatment Systems. The disposal of biosolids from wastewater treatment plants is expensive and troublesome. ATAD systems utilise microbes and are claimed to overcome many of the problems of more conventional disposal methods. Two have been installed in plants in central Victoria. However, virtually nothing is known about their microbiology. The study will determine which microbial popula ....Microbiology of Autothermal Thermophilic Aerobic Digester (ATAD) Systems for Biosolids Disposal in Wastewater Treatment Systems. The disposal of biosolids from wastewater treatment plants is expensive and troublesome. ATAD systems utilise microbes and are claimed to overcome many of the problems of more conventional disposal methods. Two have been installed in plants in central Victoria. However, virtually nothing is known about their microbiology. The study will determine which microbial populations are present and responsible for biosolids digestion, how these populations might change with changing operational conditions, and whether these changes in populations relate to production of odors. This information will enable these digesters to be better managed and operated.Read moreRead less
A novel method for controlling microbial concrete corrosion in sewers. This project plans to use a newly discovered, low-cost and environmental benign antimicrobial agent to develop an innovative technology to control the development of corrosion-inducing sewer biofilms. Concrete sewer corrosion is a long-standing and costly problem for the water industry. Microbial hydrogen sulfide oxidation on concrete surfaces plays a critical role. The technology will be designed to prevent corrosion of new ....A novel method for controlling microbial concrete corrosion in sewers. This project plans to use a newly discovered, low-cost and environmental benign antimicrobial agent to develop an innovative technology to control the development of corrosion-inducing sewer biofilms. Concrete sewer corrosion is a long-standing and costly problem for the water industry. Microbial hydrogen sulfide oxidation on concrete surfaces plays a critical role. The technology will be designed to prevent corrosion of new concrete sewers by adding a precursor chemical into the cement, or to slow down the corrosion of existing sewers by infrequently (once every one to few years) spraying the precursor chemical directly onto the concrete surface. Potentially, the project will substantially reduce sewer corrosion.Read moreRead less
Coastal monitoring using metal resistant microbes. We will develop an early warning, rapid biological assessment (RBA) for sediment toxicity that can be used alongside chemical tests to detect sub-chronic changes in the environment. The assessment will be validated by extensive testing of impacted sediment. We will show how the RBA fits into existing decision trees defined by the Australian and New Zealand Environment and Conservation Council (ANZECC) 2000 Guidelines. The biological tests result ....Coastal monitoring using metal resistant microbes. We will develop an early warning, rapid biological assessment (RBA) for sediment toxicity that can be used alongside chemical tests to detect sub-chronic changes in the environment. The assessment will be validated by extensive testing of impacted sediment. We will show how the RBA fits into existing decision trees defined by the Australian and New Zealand Environment and Conservation Council (ANZECC) 2000 Guidelines. The biological tests resulting from this project will be as rapid and straightforward as existing chemical tests, which will facilitate industry acceptance. The project has strong industry involvement from mining companies, the Environment Protection Agency (EPA) and traditional owners. These partners will guide this project and facilitate communication to the wider industry to aid acceptance and uptake.Read moreRead less
Microbial community characterisation for bioprocessing of chlorinated hydrocarbon contaminated groundwater. Due to irresponsible industrial practices, Australia has hundreds of polluted soil and water environments. This includes the notorious groundwater contamination underlying Botany in Sydney, an area of rich industrial, residential and cultural significance. The use of microbes to clean up polluted environments, such as the Botany groundwater, is known as bioremediation - a process exploitin ....Microbial community characterisation for bioprocessing of chlorinated hydrocarbon contaminated groundwater. Due to irresponsible industrial practices, Australia has hundreds of polluted soil and water environments. This includes the notorious groundwater contamination underlying Botany in Sydney, an area of rich industrial, residential and cultural significance. The use of microbes to clean up polluted environments, such as the Botany groundwater, is known as bioremediation - a process exploiting the natural metabolic versatility of microbes. To clean up the polluted groundwater in Botany, mixed species communities of pollutant degrading microbes are being produced. Novel tools to reveal the inner workings of these microscopic communities are also being developed, giving Australia an unprecedented advantage in the global bioremediation market.Read moreRead less
Identifying limitations to the establishment of microbial communities and sustainable nutrient cycling in bauxite residue sand under rehabilitation. Australia is the world's largest producer of bauxite. The process of refining bauxite to aluminium generates 2 t of residue for every 3 t of bauxite, creating a major residue management issue. Rehabilitation of residue disposal areas is critical for reducing impacts on the environment and surrounding community and ultimately aims to create a sustain ....Identifying limitations to the establishment of microbial communities and sustainable nutrient cycling in bauxite residue sand under rehabilitation. Australia is the world's largest producer of bauxite. The process of refining bauxite to aluminium generates 2 t of residue for every 3 t of bauxite, creating a major residue management issue. Rehabilitation of residue disposal areas is critical for reducing impacts on the environment and surrounding community and ultimately aims to create a sustainable ecosystem following closure of the facility. This research will provide a detailed understanding of the establishment of microbial communities and the factors controlling the survival and functioning of microorganisms in bauxite residue sand. The outcomes will aid the development of improved protocols and strategies for bauxite residue rehabilitation in Australia and internationally.Read moreRead less