Water Journal : Water Journal April 2012
new products & services water APRIL 2012 149 The company will be headed up by General Manager, Trevor Lohman, who has a mechanical engineering background and combines over 15 years' direct experience with the Aerzen product range, with many years of operations management to the oil and gas industry. Trevor is joined by an experienced team of sales and service people with over 45 years of direct Aerzen experience. The Aerzen Delta Blower package has set the benchmark for others in the industry. The latest Generation 5 blower packages incorporate the patented 3-lobe blower stages with integrated pulsation cancellation for lower noise and longer bearing life, reactive discharge silencers without packing to ensure no fouling of downstream components, self-tensioning belt drive and compact-design low-noise enclosures. Aerzen will also be introducing the revolutionary Delta Hybrid unit. This rotary lobe compressor range offers robust construction and higher efficiency than traditional blower units. With flows up to 150m3/min and pressure to 1.5 barg, the Delta Hybrid will reduce operating costs in higher-pressure applications. The second product will be the new Aerzen Turbo range of blowers. Aerzen has combined the revolutionary design aspects of a leading Korean Turbo design with innovative German engineering to produce a range of Turbo Blower units that will quickly become sought after. The Aerzen Turbo unit has a proprietary design, permanent magnet motor and variable speed controller combination to provide greatly improved efficiencies for water and wastewater treatment applications. The airfoil bearings and cast stainless steel impellor are additional design features that optimise the equipment design. Turbo units are fast becoming the preferred equipment for some high-flow, energy-conscious users, and the Aerzen Turbo units will certainly meet many of the process requirements. Aerzen is the only equipment manufacturer that can offer the four leading technologies for water and wastewater treatment applications. Whether it is the traditional rotary piston blowers with large turn-downs and robust design or the 100% oil-free screw compressor packages for those higher pressure applications, the new Delta Hybrid or Turbo units will allow for an unbiased assessment of the process requirements, and a proposal of the best technology to meet these requirements. Come and see the latest blower, turbo and hybrid machines at the Aerzen Australia stand at Ozwater'12. PROGRESS OF THE VICTORIAN DESALINATION PROJECT In the 30 months since construction began on the Victorian Desalination Project -- one of the largest infrastructure projects undertaken in Australia in recent years -- a great deal has been achieved; from an empty paddock in September 2009 to April 2012 when the complex construction project -- which, in effect, comprises five different projects and multiple work sites -- is now on the home stretch. The project was originally commissioned to tight deadlines. Ironically, Victoria has experienced adverse weather conditions, including significant rainfall, since construction began. While progress has been delayed as a result (although the plant will still be at full production by the end of 2012), the urgency for the desalination plant to complement Melbourne's water supplies following 12 years of drought has been reduced. Engineering and construction achievements to date have been significant: more than 15 million man-hours have been worked, with no serious injury; and four out of the five project areas have now been completed by our construction contractor, Thiess Degrémont Joint Venture. Construction of the two underground tunnels, measuring 1.2km and 1.5km long and 4.6 metres in diameter, and of associated marine works was finished in 2011, ahead of schedule. Commissioning of the marine structures and tunnels has commenced and the tunnels were successfully filled with seawater in February this year. The 84km, 1.9m-diameter transfer pipeline that will provide water to communities throughout Melbourne, South Gippsland and Westernport as required is also complete. Hydrotesting of the pipeline was finished just before Christmas 2011 and the pipeline is now ready to receive and transport drinking water supplies from the desalination plant. Another recent major achievement is the completion of the 87km underground power cable. Building and energising the longest 220kV HVAC underground power cable of its type in the world to the satisfaction of stakeholders and safety regulators is no mean feat. The work was successfully completed in March 2012, and power from Melbourne's grid is now hooked up to the site's two 22kV transformers. The plant's 29 buildings will progressively be energised over the coming months. With construction nearing completion, the complex task of commissioning, which involves more than 200,000 tests, is now underway. The Environment Protection Authority (EPA) recently issued approval for the commissioning activities under Section 30A of the Environment Protection Act 1970. As these tests are completed, more and more parts of the plant will be brought online. At the heart of the plant, the Reverse Osmosis (RO) building, where filtered seawater is pushed through 55,000 membranes to separate salt from water, a team of more than 30 commissioning engineers, including some of the world's best specialists, are putting the thousands of pieces of equipment and control systems through an extensive series of tests and checks. Feedback from visiting experts has confirmed that the equipment procured and installed is of a very high quality. Back outdoors, the largest green roof in the southern hemisphere, covering more than 26,000m2, has been planted out with around 100,000 indigenous plants, blending the building into the surrounding natural landscape, a key feature of the design and which, along with the size of the plant, distinguishes it from all other desalination projects in Australia. There are a number of other significant milestones on the horizon, including the completion of the Sea Water Lift Pump station in April, and the first pumping of seawater into the plant around May to mark the start of the process commissioning. Within months, Melburnians will have access to a reliable, high-quality, rainfall- independent water source.
Water Journal May 2012
Water Journal December 2011