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Full-Text Articles in Engineering
Permeable Reactive Barrier (Prb) Technology: An Innovative Solution For The Remediation Of Acidic Groundwater From Acid Sulphate Soil (Ass) Terrain, Laura Banasiak, Buddhima Indraratna
Permeable Reactive Barrier (Prb) Technology: An Innovative Solution For The Remediation Of Acidic Groundwater From Acid Sulphate Soil (Ass) Terrain, Laura Banasiak, Buddhima Indraratna
Faculty of Engineering - Papers (Archive)
The remediation of acidic groundwater contaminated with potentially toxic metals such as aluminium (Al) and iron (Fe) resulting from the oxidation of sulphidic materials in acid sulphate soils (ASSs) is a challenging geo-environmental problem that requires innovative engineering solutions. In low-lying coastal floodplains, the remediation strategies of groundwater manipulation (e.g. fixed-level weirs) and tidal buffering (e.g. two-way modified floodgates) are not feasible due to the risk of flooding during heavy rainfall events and their inability to prevent pyritic oxidation. In view of this in 2006, the first pilot subsurface permeable reactive barrier (PRB) using recycled concrete for the remediation of …
Practice And Prospects Of Fully Mechanized Mining Technology For Thin Coal Seams In China, F Wang, S Tu, Qingsheng Bai
Practice And Prospects Of Fully Mechanized Mining Technology For Thin Coal Seams In China, F Wang, S Tu, Qingsheng Bai
Faculty of Engineering - Papers (Archive)
In China, thin coal seams are rich in resources but are technically challenging. The mineable reserves in these seams account for 20.4% of the total coal resources, while the current production accounts for only 10.4% of the total annual production. Characteristics such as narrow mining space, low level of mechanization, poor working environment, and high cost of mining, restrict the development of mining safety and efficiency. Recently, fully mechanized mining technology has developed rapidly for thin coal seams, the level of yield and efficiency has reached or exceeded the international standard, and some state-owned key coal mines are considering automation …
Permeable Reactive Barrier (Prb) Technology For The Remediation Of Acidic Groundwater From Acid Sulphate Soil Floodplain In South East New South Wales, L J. Banasiak, B Indraratna, A. Golab
Permeable Reactive Barrier (Prb) Technology For The Remediation Of Acidic Groundwater From Acid Sulphate Soil Floodplain In South East New South Wales, L J. Banasiak, B Indraratna, A. Golab
Faculty of Engineering - Papers (Archive)
The release of acidic water contaminated with toxic metals such as aluminium (Al) and iron (Fe) resulting from pyrite oxidation within acid sulphate soils (ASSs) is a major environmental issue in Australia. Groundwater manipulation using weirs and modified floodgates is not effective in low-lying floodplains due to the high risk of flooding and their inability to prevent pyrite oxidation. Permeable reactive barrier (PRB) technology has been looked at as an alternative remediation technique in ASS terrain. Batch and short-term column tests were used to choose a suitable reactive material for the remediation of acidic water and the removal of Al …
A Real-Time Measuring Technology For Studying Distortion Of Hydraulic Turbine Blade Castings During Heat Treatment Process, Hailiang Yu, Jinwu Kang, Gang Nie, Haimin Long, Xiaokun Hao, Tianyou Huang
A Real-Time Measuring Technology For Studying Distortion Of Hydraulic Turbine Blade Castings During Heat Treatment Process, Hailiang Yu, Jinwu Kang, Gang Nie, Haimin Long, Xiaokun Hao, Tianyou Huang
Faculty of Engineering - Papers (Archive)
During heat treatment process, the distortion behavior inevitably appears in hydraulic turbine blade castings. In this research, a technology was developed for real-time measurement of the distortion in hydraulic turbine blade castings at the still air cooling and forced air cooling stages during heat treatment process. The method was used to measure the distortion behavior at the cooling stages in both normalizing and tempering processes. At the normalization, the distortion at the blade corner near outlet side undergoes four stages with alternating bending along positive and negative directions. At the tempering stage, the distortion could be divided into two steps. …
Practice And Prospect Of Fully Mechanised Mininig Technology For Thin Coal Seams Under Complex Conditions In China, Shihao Tu, Fangtian Wang, Yan Lu, Qi Wu, Qingsheng Bai
Practice And Prospect Of Fully Mechanised Mininig Technology For Thin Coal Seams Under Complex Conditions In China, Shihao Tu, Fangtian Wang, Yan Lu, Qi Wu, Qingsheng Bai
Faculty of Engineering - Papers (Archive)
In China, thin coal seam are rich in resources and complex in conditions, however, the characteristics such as narrow mining space, the low level of mechanised technology, bad working environment and the high cost of mining, directly restrict the development of mining safety and high-efficiency. In thin coal seams with hard gangue which contains concretions of pyrite, LS-DYNA is applied to calculate the rational blasting parameters and carry out the deep-hole pre-splitting blasting technology, the hard gangue is fractured effectively, hence advancing the productivity of thin coal seam mining. In addition, the mining rate is sped up in thin protective …
Advanced Directional Drilling Technology For Gas Drainage And Exploration In Australian Coal Mines, Fangtian Wang, Ting Ren, Frank Hungerford, Shihao Tu, Najdat I. Aziz
Advanced Directional Drilling Technology For Gas Drainage And Exploration In Australian Coal Mines, Fangtian Wang, Ting Ren, Frank Hungerford, Shihao Tu, Najdat I. Aziz
Faculty of Engineering - Papers (Archive)
With the continuing technology innovation, directional drilling technology has provided the coal mining industry with effective and practical options for pre- and post-drainage and exploration in Australia. In the past thirty years, in-mine borehole steering equipment has been developed from the single shot camera survey systems to the advanced Directional Drill Monitor utilizing Modular Electrically Connected Cable Assembly (DDM-MECCA) survey instruments, which provides rapid and easy underground borehole survey measurements whilst drilling. The presence of coal seam gas such as methane poses a significant safety hazard to underground coal mining all over the world. However, gas can be captured using …
Developments In Bulk Material Elevation Technology, Peter W. Wypych, Peter Olds, Robert Olds, Richard Mcintosh
Developments In Bulk Material Elevation Technology, Peter W. Wypych, Peter Olds, Robert Olds, Richard Mcintosh
Faculty of Engineering - Papers (Archive)
Existing methods of bulk material elevation, such as dilute-phase pneumatic conveying, screw conveying and bucket elevators, can experience a wide range of problems and hazards. A new type of elevator, called the Olds Elevator, has been developed recently to overcome many of these problems. This paper describes and reviews this new technology and demonstrates some its unique features and advantages via industrial case studies. It also describes a new research facility to investigate particular design and operating issues and the future potential of this new technology.
Dairy Shed Wastewater Treatment By Anaerobic Digestion Technology, Ling Tie, Muttucumaru Sivakumar
Dairy Shed Wastewater Treatment By Anaerobic Digestion Technology, Ling Tie, Muttucumaru Sivakumar
Faculty of Engineering - Papers (Archive)
Continued growth and consolidation of the livestock industry such as dairy industry has generated large-quantities and high-strength manure, which has long been identified as a major contributor to diffuse source pollution in Australia. However, conventional dairy shed wastewater treatment practices in Australia such as two pond systems still do not provide sufficient treatment. In addition, relevant laws and regulations in terms of nutrient management plans and manure solids disposal require new waste management approaches. Anaerobic digestion (AD) is an efficient, small footprint, cost effective and sustainable technology that should be applied in Australian dairy farms, and has the potential not …
Membrane Bioreactor Technology For Decentralised Wastewater Treatment, Nichanan Tadkaew, Long Nghiem, Muttucumaru Sivakumar
Membrane Bioreactor Technology For Decentralised Wastewater Treatment, Nichanan Tadkaew, Long Nghiem, Muttucumaru Sivakumar
Faculty of Engineering - Papers (Archive)
Driven by stricter environmental regulations and legalisation on wastewater discharge and shrinking fresh water resources, water treatment has become an area of significant concern while at the same time there is a growing interest in utilising non-traditional water resources by means of water reclamation and water recycling.
Electrocoagulation (Ec) Technology For Nitrate Removal, Mohammad Emamjomeh, Muttucumaru Sivakumar
Electrocoagulation (Ec) Technology For Nitrate Removal, Mohammad Emamjomeh, Muttucumaru Sivakumar
Faculty of Engineering - Papers (Archive)
High nitrate contamination in drinking water is a serious environmental pollutant, as it is generally a problem associated with anthropogenic activities. Sources of nitrate pollution include discharge of chemical fertilizers, human and animal wastes. Excessive application of agricultural fertilizers has been known to cause penetration of large quantities of nitrates into underground and surface waters. Nitrate is a stable and highly soluble ion with low potential for precipitation or adsorption. These properties make it difficult to remove using conventional water treatment method. Several methods have been proposed in the literature for the removal of nitrate. In this project, a laboratory …