Water Journal : Water Journal June 2015
22 AWA News WAter June 2015 was based on the inconsistency of nitrate concentration at various wastewater sites in relation to the Australian and New Zealand Environmental Conservation Council regulations for preventing eutrophication. Subsequently, nitrate eutrophication is a risk factor for A. circinalis (cyanobacteria) bloom, which can have severe health, economic and ecological implications. A. circinalis blooms can cause severe depletion of dissolved oxygen, which creates a hypoxic or anoxic ‘dead zone’ that suffocates fish, shellfish and other aquatic life. This continues to threaten the world’s commercial fishing industries. “My methodology involved testing nitrate concentration in water samples collected from Esk, Fernvale, Lowood, Oxley and Beenleigh wastewater sites on five separate days. Nitrate concentrations were compared with ANZECC 1992 guidelines for preventing eutrophication. These nitrate concentrations were simulated using sodium nitrate and inoculated with cyanobacteria. On the respective days of collection, 1mL of solution was removed from each test tube for cells/filament and heterocyst/filament calculation. “Results showed higher nitrate levels correlated with higher growth rate of cyanobacteria. Only the A. circinalis growing in Beenleigh’s nitrate concentration had a significantly higher growth rate, relative to the negative control; Esk, Lowood, Fernvale and Oxley nitrate concentrations did not due to low nitrate concentrations. However, all nitrate concentrations tested exceeded the ANZECC guidelines for preventing eutrophication. “The results indicated that Beenleigh’s wastewater treatment requires refinement in reducing nitrate levels prior to discharge. However, it was inconclusive whether the observed higher growth rate would result in cyanobacteria algal bloom. Further study should determine what degree of cyanobacteria growth would be of ecological or economical significance. Although tested nitrate levels exceeded recommended guidelines, A. circinalis did not have significant growth relative to the negative control, indicating nitrate treatment at these locations is satisfactory in regards to prevention of cyanobacteria bloom. “This award has given me confidence not only in my research, but in myself. However, without the opportunities and support from the Queensland Academy for Health Sciences I would not be where I am today. I would ike to acknowledge my supervisor Mr Anir Lal for his continuous support and guidance. I would also like to express my gratitude to Xylem, sponsor of the Stockholm Junior Water Prize, for providing me with this once-in-a-lifetime opportunity to represent Australia to compete internationally.” 2015 NATIONAL WATER POLICY SUMMIT The Australian Water Association’s National Water Policy Summit will be held Tuesday 6 to Wednesday 7 October 2015 in Melbourne. If you have any policy issues you would like to see discussed at the Summit please email Amanda White at firstname.lastname@example.org WATER INNOVATION CHALLENGE WINNER Innovation plays a key role in the water sector and helps us address some of our current and future challenges. In response to ongoing challenges involving sustainable water management, the Australian Water Association and YouNoodle have joined forces to launch the Australian Water Innovation Challenge. The Innovation Challenge calls for entrepreneurs and established companies to enter their most innovative water technology solutions to transform the sustainability of communities and businesses, both in Australia and around the world. The first challenge was launched at the Australian Water Association’s Water Innovation Forum in Sydney in March. This first challenge, presented in collaboration with ARUP, called on entrepreneurs and established companies to enter their most innovative product or solution that would lead to better engagement with customers and communities by creating an emotional connection with water. Twenty-two entries were formally submitted via the online platform. The winner is a Melbourne-based start-up company called Half a Teaspoon with its ‘Project 0’, which aims to engage communities, business and government to collectively create specially designed Art Fountains, creating a more positive association with drinking tap water from public fountains and reducing the need to buy bottled water. To read more about Project 0 please turn to page 39. BRANCH NEWS QUEENSLAND NORTH QUEENSLAND REGIONAL CONFERENCE 2015 North Queensland Regional Conference 2015, which features the theme ‘Driving Efficiency In Water Service Delivery’, will be held 23–24 July in Cairns and will provide a combination of technical presentations, trade displays and networking opportunities. The conference will attract a wide cross-section of the industry and will cover all of the major participants in the water industry in North Queensland. Host sponsor for 2015 is Cairns Regional Council. Cairns is at the heart of Queensland's tropical economy, and Cairns Regional Council has a clear focus for economic growth and long-term sustainability for the region. VICTORIA 53RD ANNUAL DINNER The Australian Water Association’s Victorian Branch Annual Dinner is the premier event on the calendar for the Victorian water industry. This year the dinner will held at Melbourne Town Hall with guest speaker, The Hon. Lisa Neville, Minister for Climate Change and Water. The event kicks off with pre-dinner drinks at 6.30pm in Swanston Hall, after which guests will proceed to the Main Hall for dinner. The evening concludes at 11.30pm. To register, please go to www.awa.asn.au or contact State Manager Gail Reardon at email@example.com.
Water Journal May 2015
Water Journal August 2015