Development of redox-mediated microbial assays for the rapid characterisation and assessment of wastewater, wastewater treatment processes and recycled water. With SE Qld on Level 5 water restrictions the need to reduce our demand on drinking water by increasing our reliance on recycled water is now urgent. To achieve this we need to ensure that the quality of our recycled wastewater is of a suitable and reliable standard. This project will assist the water industry in this endeavour by the de ....Development of redox-mediated microbial assays for the rapid characterisation and assessment of wastewater, wastewater treatment processes and recycled water. With SE Qld on Level 5 water restrictions the need to reduce our demand on drinking water by increasing our reliance on recycled water is now urgent. To achieve this we need to ensure that the quality of our recycled wastewater is of a suitable and reliable standard. This project will assist the water industry in this endeavour by the developing monitoring techniques that can rapidly characterise and assess the effectiveness of wastewater treatment processes and the quality of the water derived from them. These methods will provide early warnings of potential 'upsets' in treatment plants that would otherwise result in poor quality effluents that would need to be discharged as waste rather than be recycled.Read moreRead less
Experimental and theoretical analysis of gas leakage rate through composite landfill covers due to geomembrane defects. The Australian Greenhouse Office indicated that waste emissions contributed 3.1% of net national emissions in 2001 with methane emissions from landfills accounting for 92% of total methane emissions from the waste sector, despite an increase in methane recovered from solid waste. It pointed out that the recent changes in waste management practices did not have an impact on repo ....Experimental and theoretical analysis of gas leakage rate through composite landfill covers due to geomembrane defects. The Australian Greenhouse Office indicated that waste emissions contributed 3.1% of net national emissions in 2001 with methane emissions from landfills accounting for 92% of total methane emissions from the waste sector, despite an increase in methane recovered from solid waste. It pointed out that the recent changes in waste management practices did not have an impact on reported methane emission levels and there is need to undertake a range of activities to reduce emissions from waste management activities. This project will address specifically the above issue by providing a new method of analysis to predict gas leakage rate and allow engineers to propose solutions to mitigate gas escapes. Read moreRead less
Enhancing the productivity of wastewater desalination. Climate change is causing reduced rainfall over much of populated Australia. New technology to enable membrane desalination of wastewater treatment effluent will be developed to provide secure reliable water supplies for Australian (and international) urban and regional communities. Application of the technology to Western Treatment Plant at Werribee will provide up to 10 gigalitres/year of recycled water to the local agricultural, business ....Enhancing the productivity of wastewater desalination. Climate change is causing reduced rainfall over much of populated Australia. New technology to enable membrane desalination of wastewater treatment effluent will be developed to provide secure reliable water supplies for Australian (and international) urban and regional communities. Application of the technology to Western Treatment Plant at Werribee will provide up to 10 gigalitres/year of recycled water to the local agricultural, business and tourism precincts. The economy, community and environment will benefit due to reduced use of potable, river and ground water. Wide application of this technology to wastewater and brackish water will lead to similar benefits and an environmentally sustainable Australia.
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Development of a Model Relating Aggregate Properties with Aggregation Conditions for Design and Control Purposes. The project aims to understand the role of shear and other important parameters in the aggregation of nano- and micron-sized particles through fundamental studies on different particulate systems and shear environments. The knowledge will be used to develop an engineering model relating the floc properties to system conditions, thus allowing the utilisation of experimental data to fu ....Development of a Model Relating Aggregate Properties with Aggregation Conditions for Design and Control Purposes. The project aims to understand the role of shear and other important parameters in the aggregation of nano- and micron-sized particles through fundamental studies on different particulate systems and shear environments. The knowledge will be used to develop an engineering model relating the floc properties to system conditions, thus allowing the utilisation of experimental data to full-scale operations without eschewing their relevance. Project outcomes include a comprehensive guideline to set optimum conditions required to generate flocs with desirable properties for control and design purposes, with applicability extending from solid-liquid separation to nano-material synthesis, and various processes involving particle aggregation.Read moreRead less
Biotransformation and biodegradation of organic nitrogen compounds from wastewater in bio-electrochemical systems. The rapid emergence of water recycling in Australia requires more vigilant control of pollutants that are discharged to sewers. This project will develop a novel, cost-effective process to remove organic nitrogen compounds (and likely other organics) present in many industrial wastewaters. It could provide an excellent solution for the pre-treatment of such industrial wastewaters at ....Biotransformation and biodegradation of organic nitrogen compounds from wastewater in bio-electrochemical systems. The rapid emergence of water recycling in Australia requires more vigilant control of pollutants that are discharged to sewers. This project will develop a novel, cost-effective process to remove organic nitrogen compounds (and likely other organics) present in many industrial wastewaters. It could provide an excellent solution for the pre-treatment of such industrial wastewaters at the source without any chemical addition, hence reducing the challenge and risks facing the water recycling plants. This innovative technology will further expand the growing research capacity and know-how in water recycling in Australia.Read moreRead less
From the Tap to the Bottle: an international study of the social and material life of bottled water. Water is a critical resource in Australia yet little is known about water in bottles. This project will be the first comparative study of bottled water marketing, consumption and disposal. It will make a significant contribution to national and international understandings of changing practices in the consumption of drinking water. The research will produce an analysis of the rise of the bottle i ....From the Tap to the Bottle: an international study of the social and material life of bottled water. Water is a critical resource in Australia yet little is known about water in bottles. This project will be the first comparative study of bottled water marketing, consumption and disposal. It will make a significant contribution to national and international understandings of changing practices in the consumption of drinking water. The research will produce an analysis of the rise of the bottle in relation to the tap. Specifically, how various anxieties associated with drinking tap water, in Australia and elsewhere, impact on bottled water consumption. The knowledge produced about bottled water collection, circulation and regulation will contribute to wider debates about sustainable water provision and access to safe water for all.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
Multi-scale modeling of transport through deformable porous materials. Understanding solute transport through porous materials is essential because it provides a technical basis for answering many important questions in society today-how can humans avoid 'brittle bones', how to design durable infrastructure, how to safely store wastes (e.g. hazardous and municipal). Solution of each of these problems requires innovation in model development, new method of analysis, and insightful interpretation ....Multi-scale modeling of transport through deformable porous materials. Understanding solute transport through porous materials is essential because it provides a technical basis for answering many important questions in society today-how can humans avoid 'brittle bones', how to design durable infrastructure, how to safely store wastes (e.g. hazardous and municipal). Solution of each of these problems requires innovation in model development, new method of analysis, and insightful interpretation of results. While theoretical developments of this project are general, in the sense that they are not restricted to particular engineering disciplines, the four chosen applications closely align with two major research priorities namely An Environmental Sustainable Australia and Promoting and Maintaining Good Health.Read moreRead less
Production of diesel from the catalytic pyrolysis of waste plastics. Large amounts of waste plastics go to landfill daily. Landfill simply buries our wastes for future generations and can contribute to the contamination of ground water. This project aims to develop an advanced pyrolysis technology to produce transport diesel from waste plastics. This technology is an economically attractive and environmentally friendly way for the disposal of waste plastics without any environmental problems ass ....Production of diesel from the catalytic pyrolysis of waste plastics. Large amounts of waste plastics go to landfill daily. Landfill simply buries our wastes for future generations and can contribute to the contamination of ground water. This project aims to develop an advanced pyrolysis technology to produce transport diesel from waste plastics. This technology is an economically attractive and environmentally friendly way for the disposal of waste plastics without any environmental problems associated with the landfill or direct incineration of waste plastics. As this technology is based on advances in Australian research and development, exporting this to other countries will further enhance its economic and social benefits to Australia.Read moreRead less
Determination of the fate of dissolved organic nitrogen in biological nutrient removal (BNR) processes and development of appropriate treatment technologies. The aim of this project is to better characterise the dissolved organic nitrogen (DON) in sewage treatment plant influent, determine its fate in biological nutrient removal (BNR) plants, and to evaluate and develop an appropriate treatment technology.
As a result of tightening effluent N licence requirements for sewage treatment plants, ....Determination of the fate of dissolved organic nitrogen in biological nutrient removal (BNR) processes and development of appropriate treatment technologies. The aim of this project is to better characterise the dissolved organic nitrogen (DON) in sewage treatment plant influent, determine its fate in biological nutrient removal (BNR) plants, and to evaluate and develop an appropriate treatment technology.
As a result of tightening effluent N licence requirements for sewage treatment plants, the dissolved organic nitrogen (DON) fraction has become extremely important. In many cases, the DON forms the major fraction of the effluent N, and is constraining further reductions in licence specifications, and in some cases it is the cause of failure to meet licence.
DON is refractory (un-biodegradable), very poorly characterised, its fate in conventional biological treatment processes not known, and its eventual impact on the environment unknown. Considering its importance, it is critical that these issues are addressed. This proposal intends to address some of them.
This project is an APA(I) PhD student project.Read moreRead less