30 & 31 March, 2011 Exhilarating Events Center, Newcastle
Supported by: Hunter Water Corporation & Hunter Water Australia, NSW Water Directorate, Tebsin Group, ITT Water & Wastewater, Acromet & Peerless Epigen.
The following papers are listed in order of the conference program
OUR SUPPLY IS FINE – THAT COULDN’T HAPPEN HERE! Paul Byleveld – (NSW Health)
WIOA REPORT Cynthia Lim – Water Industry Operators Association of Australia
ICE PIGGING – THE WAY AHEAD FOR WATER MAIN CLEANING Graeme Berriman – Gosford City Council
+Abstract
Most water system operators, especially those tasked with maintaining an aging water system have at one time or another been required to carry out mains cleaning. For large diameter pipes, this generally involves use of a large sponge or plastic swab or pig, excavation of the pipeline at each end to install pig launchers and catchers, weeks of interruption to supply and a considerable burden on resources. The method involves pumping an ice slurry into a water main usually through a hydrant or air valve. Once in place, the ice pig is moved along the pipe via normal water flows, controlled by a downstream valve and is removed via a hydrant or air valve upstream.
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SOLUTION TO THE POTENTIAL PROBLEMS AND RISKS WHEN USING, TRANSPORTING AND STORING OXY ACETYLENE EQUIPMENT Robert Palmer & Ken Barker – Port Macquarie-Hastings Council
+Abstract
Port Macquarie-Hastings Council is leading by example in addressing potential workplace safety issues when using, transporting and storing oxy acetylene equipment and gas cylinders. Rather than respond to a potentially life-threatening incident, Council has taken a proactive approach by identifying potential risks and finding solutions through changed work practices and new technology to ensure the safety of its staff, the general public and operational worksites, while also improving the quality finish of its water supply infrastructure.
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COMMISSIONING OF WOODFORD ISLAND SEWERAGE TREATMENT PLANT – OPERATIONAL AND PROCESS ISSUES Andrew Potter – Clarence Valley Council
+Abstract
Clarence Valley Council as part of a large sewerage infrastructure program has constructed a new Sewerage Treatment Plant located on Woodford Island approximately 5km from the township of Maclean on the North Coast of NSW. The STP was just one construction package along with transfer systems and pressure sewer packages. The STP construction was delayed due to flooding in the Clarence Valley in however the transfer packages were not delayed to the same extent. Due to some contractual issues and community expectations flow was accepted at the treatment plant before construction and commissioning was completed.
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COMMISSIONING AND HANDOVER OF A GREENFIELD MEMBRANE WATER TREATMENT PLANT Chris Gilbert – MidCoast Water
+Abstract
The Strategic Drinking Water Management Plan adopted by MidCoast Water identified the need to introduce infrastructure which would provide world class quality drinking water utilizing the best available and suitable technology, compatible with the existing water supply, with sufficient capacity to cater for the forecast growth and consumption of the customer base. MidCoast Water had awarded all contracts and subsequently commenced construction of a new Membrane filtration plant adjacent to the existing treatment and pump station.
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ACCURATE MEASUREMENT OF MINIMUM NIGHT FLOWS FOR WATER LOSS ANALYSIS Melanie Werner – Water Loss Management Program NSW
+Abstract
Continuous monitoring of night flows into water supply zones or district metered areas is an important operational tool for identifying water loss within a reticulation network. There are a number of points that must be taken into account when designing and installing a metering solution for monitoring minimum night flows. Meters must be sized correctly to strike a balance between accuracy at low flows and head loss at high flows. By ensuring metering is accurate and the results are interpreted correctly, local water utilities will have the tools in place to manage water loss in their systems and achieve sustainability of savings through ongoing monitoring.
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DORA CREEK WWTW REDESIGN, REBUILD, DEMOLISH, THE SOLUTION TO ALL PROBLEMS John Stevens – Hunter Water Australia
+Abstract
Dora Creek is located on the western shores of Lake Macquarie and services the surrounding areas of Dora Creek, Morisset and Bonnells Bay. Commissioned in 1994 it was built as part of the Hunter Sewerage Project. The plant was constructed with a view to provide Eraring Power Station with process water. Dora Creek WWTW had a design capacity of 16,000 EP by 2010 the process load was 18,850 EP and the inlet works showed signs of major deterioration.
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SELECTION CRITERIA FOR MATERIALS AND METHODS TO REHABILITATE UNDERGROUND INFRASTRUCTURES FOR THE SUSTAINABILITY OF FUTURE HEALTHY GENERATIONS Jerry Trevino – Protective Liner Systems & US Society of Trenchless Technologies
+Abstract
Drinking water in the United States contains trace elements of pharmaceuticals drugs, antidepressants, illicit drugs, and other dangerous chemicals. A source of these chemicals is the poor condition of our sewer infrastructure which allows large quantities of clean water to enter the sewer collection system which can overwhelming the water treatment facilities.
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ALBINGO WASTEWATER TREATMENT PLANT UPGRADE Kay White – SMEC Australia
+Abstract
A three-stage Bardenpho wastewater treatment plant was built and constructed at the Talbingo township in the mid-1990s. Design of the plant allowed for low wastewater temperatures due to snow melt infiltration in spring, periodic low loading conditions and sensitive waters requirements for effluent quality. The community were also consulted on the plant design. The performance of the plant over the 14 years since commissioning has now been reviewed and, with the exception of effluent TP, has generally been good, although this has been assisted by the lower than anticipated flows and loads.
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AT BURSTING POINT Ed Ahern – Nuflow Technologies
+Abstract
Burst water mains and pin hole leaks in pressure pipes, have always been repaired by the traditional methods of ‘excavate and replace’. Little thought has ever been given to trenchless NoDig technologies that apply to so many other aspects of our lives.
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SECURING THE SHIRES WATER SUPPLY Barry Jones – Eurobodalla Shire Council
+Abstract
The Eurobodalla Shire Council commenced operation of its water supply system in 1936 supplying the village of Narooma from a weir located near Gulaga (Mt Dromedary) in Tilba. Since then the Shire has expanded to now supply to Narooma, Bodalla, Moruya, Broulee, Mogo, Batemans Bay and many of the surrounding small villages. The supply relies on the flows in the Tuross, Moruya and Buckenboura Rivers all running through unprotected catchments. Water is stored in Deep Creek Dam, which acts as the emergency supply for the Shire.
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SELECTION CRITERIA TO ACHIEVE LOWER LIFE-CYCLE COSTS FOR BLOWERS IN WASTE WATER TREATMENT Sri Srinivasan – CAPS Australia
SERVICE RESERVOIR REFURBISHMENT Stefan Claveria – Sinclair Knight Merz
+Abstract
Some steel reservoirs in Victoria are currently experiencing steel floor plate corrosion from the underside which has led to significant corrosion and even perforation. Some of the tanks have light gauge aluminium roofs that have experienced failing of the fixing screws and sheet damage due mainly to thermal movement.
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SELECTION, INSTALLATION AND OPERATION OF BULK WATER FILLING STATIONS CHALLENGE Brenden Bates – Riverina Water County Council
+Abstract
There are numerous risks and issues associated with the supply of water via portable standpipes in reticulation systems. The process by which Riverina Water went through to redesign the water delivery method and install Bulk Water Filling Stations across the distribution network. Portable standpipes, as well as some conventional overhead standpipes, have now been replaced.
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SIMPLIFICATION OF TRAINING PACKAGES Wayne Morling – Government Skills Australia
+Abstract
GSA will be involved in substantial development work surrounding the simplification of Training Packages over the next two years. This will see significant changes in the way Training Packages are presented and used by industry and RTOs.
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NSW OFFICE OF WATER TRAINING COURSES & THE NATIONAL WATER PACKAGE Dr Pradeep Kumar – NSW Officer of Water
DEVELOPING TRAINING AND ASSESSMENT CAPABILITY IN THE NSW WATER INDUSTRY: A PILOT PROJECT Jennifer James – NSW Public Sector Industry Training Advisory Body (ITAB)
+Abstract
Outline of a pilot project to build the training and assessment capability of the water industry in NSW through the establishment of a Water Industry Training and Assessment Network, coordination of professional development activities, development of a register of trainers and assessors and a web portal for network members.
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CCTV CONDUIT CONDITION INSPECTIONS – THE IMPORTANCE OF TRAINING OPERATORS AND THE CLIENT Steve Weatherstone – Streamline Learning
VIABILITY OF PHOSPHORUS RECOVERY FROM WASTEWATER AT BURWOOD BEACH WASTEWATER TREATMENT WORKS Katie Jones – Hunter Water Australia
+Abstract
Phosphorus is an essential nutrient for all life. Phosphorus is a non-renewable resource and is estimated to reach a peak in production around 2030. Wastewater is a source of phosphorus and there are numerous technologies are available for its recovery. Phosphorus recovery is technically possible; however the viability will ultimately depend on commercial factors. Phosphorus recovery, wastewater, struvite.
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WHEN IS RESERVOIR CLEANING NOT JUST CLEANING? FOLLOWING THE EVIDENCE TRAIL David Barry – Aqualift Potable Diving
+Abstract
Asset owners and management have a duty of care to manage safety in its broadest sense. The consumers using a drinking water supply, the personnel operating the asset and the general public (if the structure fails), are all affected if management outcomes are poor. Regular cleaning of water storage reservoirs provides the ideal opportunity to conduct a simultaneous condition assessment process that can monitor the ‘health’ of an asset, and thereby ensure that all safety considerations are addressed. With the ability to assess a tank before, during and after the cleaning process, divers with condition assessment experience are able to identify a variety of indicators that produce an evidence trail to water contamination potentials, structural failures, and safety issues.
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