2005 – 68th WIOA Victorian Conference
1 and 2 September, 2005 Schweppes Centre – Bendigo
Proudly Supported by: Coliban Water, Campaspe Asset Management Services (CAMS), DSE – Water Sector Services & Australian Pollution Engineering
Papers listed in order of the conference program
RECLAIMED WATER IRRIGATION – A RISK BASED APPROACH TO MANAGEMENT Anna Kelliher – RMCG
+Abstract
There is not a single recipe that can be applied across all situations. Practices used at one site may appear less sophisticated, or use a more basic level of technology than another. However, both sites may be using best practice for their situation.
Best practice is one that ensures the level of risk and level of difficulty for a particular site is managed appropriately so that the desired outcome is achieved. Consequently practices for high-risk situations are much more demanding than for low-risk scenarios.
Risks associated with reclaimed water irrigation vary according to:
• The quality and quantity of reclaimed water available;
• The physical characteristics of the site being irrigated;
• The irrigation system used;
• The type of plant being irrigated; and
• The management system in place.
Generally high-risk scenarios are to be avoided and methods available to reduce risk should be implemented. However for any changes identified the impact on social and economic benefits must be considered. The overall benefit, in a triple-bottom line sense, may mean that operating at a higher risk level is preferable.
The Victorian EPA Guidelines for Reclaimed Water Irrigation are in the process of being updated. They will take a risk-based approach similar to that outlined.
-Close
AQWEST PLANT CHLORINATION : EFFICIENCY – SAFETY – ENVIRONMNETAL PROTECTION : AN OPERATIONAL SUCCESS Jeff Nock – Aqwest – Bunbury Water Board
+Abstract
Linkages are identified between a sole operator concept and that of utilising a cooperative principle including chlorine gas and equipment service providers. We see that the outcomes achieved demonstrate the degree to which optimisation of chlorination systems in a whole of life plan can provide significant benefits to all parties concerned. At the same time the key issue of quality and costs to the consumer can be predicted for the long term and associated costs forecasted accurately for terms in excess of five years.
Finally, the conclusion is that the overall chlorination process can be moulded to suit many applications with the same level of predictable benefits and the same or greater level of reduction in perceived hazard.
-Close
NITROGEN REMOVAL USING TERTIARY FILTRATION Suzy Hatch & Colum Kearney – Sydney Water
+Abstract
Due to the nature of BNR, process designers were unsure how to combine and quantify the internal organic carbon food source from the fermenter with the methanol in order to achieve desired TN levels. It was up to the production team to test various quantities and dosing points of the Methanol to optimise the best results for nitrogen removal from the wastewater. Both plants were commissioned in June 2002 and after 18 months of process changes the plants were still only achieving approximately 7mg/l of TN in the plant effluent. We were a long way from reaching the goal of the upgrade.
-Close
COMPOSTING BIOSOLIDS Darren Key – Gippsland Water
+Abstract
-Close
PUMP EFFICIENCY MONITORING & MANAGEMENT AT MELBOURNE WATER Peta Maddy – SEAV
+Abstract
In March 2005, the Sustainable Energy Authority Victoria (SEAV) formed a partnership with Melbourne Water under the Business Energy Innovation Initiative to undertake a pump efficiency study.
When fully implemented the outcomes from the study are expected to yield energy savings in the order of 2% to 4%, which equates to approximately 3,470 to 6,940 MWh with a commensurate cost saving of $109,000 to $218,000 per annum. This also results in a reduction in greenhouse pollution of approximately 2,500 to 5,000 tonnes per annum or the equivalent to removing 575 to 1,150 average cars from Victorian roads each year.
-Close
RELINE & REHABILITATION OF SERVICE PIPELINES Stephen Bluett – “us” – Utility Services
+Abstract
-Close
A NEW INFORMATION SYSTEM FOR OPERATIONAL & LABORATORY DATA Jason Whittaker – Goulburn Valley Water
+Abstract
A partnering approach was undertaken between GVW and Bridge-Soft LLC of the United States to develop a specific product suitable for the water industry, based upon an existing product of Bridge-Soft.
Specifically, the paper outlines the history dictating the need for the Information System, as well as the key processes undertaken and issues encountered during the development of the database. In addition, the benefits to GVW and generally to the Water Industry will be discussed.
-Close
ON-SITE GENERATION OF SODIUM HYPOCHLORITE: BASIC OPERATING PRINCIPLES AND DESIGN CONSIDERATIONS John Hooper – Fluidquip Australia
+Abstract
-Close
GOULBURN VALLEY WATER’S FIELD STAFF TRAINING STRATEGY Adam Glasson – Goulburn Valley Water
+Abstract
-Close
A DUMMY’S GUIDE TO COAGULANTS Peter Gebbie – Earth Tech Engineering
+Abstract
-Close
MELBOURNE WATER’S EASTERN TREATMENT PLANT – HACCP JOURNEY Sean Wise – Melbourne Water
+Abstract
-Close
HAZARDOUS AREAS FOR WATER & WASTEWATER FACILITIES Neil Dennis – Maunsell Australia
+Abstract
The relationship of current hazardous area classification and electrical installation requirements in hazardous areas are introduced in the context of minimising the likelihood of explosions. Finally, new directions in standards are introduced including current development work within the IEC, (International Electrotechnical Commission), to include alternative approaches to hazardous area classification based on risk assessment.
-Close
PIGGING OF THE LOBETHAL SEWER RISING MAIN Sue Lefebvre – SA Water
+Abstract
-Close
EMISSIONS AND ECONOMICS OF BIOGAS AND POWER Tony Sennitt – Diamond Energy
+Abstract
It delivers a simple analysis that enables companies to focus on managing the total greenhouse gas emissions of an anaerobic lagoon to deliver an output that can be net positive for the environment.
Also includes a simple payback period methodology for converting from an existing facility to Anaerobic lagoon (coupled with electricity generation).
-Close
FILTER OPTIMISATION AT VICTORIA’S LARGEST WATER TREATMENT PLANT Mark Jarvis – Melbourne Water
+Abstract
-Close
ADWG COMPLIANCE IN REGIONAL VICTORIA Chris Speight – AQ2 Limited
+Abstract
This paper presents the results of a trial by Coliban Water of a novel water disinfection technology (Smartaflow) that enables micro-dosing for a remote community in Victoria (Bealiba). The technology described automatically meters sodium hypochlorite into a pressurised water stream in a way that overcomes the limitations of traditional systems. Despite challenging conditions, the results of the trial demonstrate the capability of the technology to safely and reliably dose the water within acceptable residual levels and to provide significant benefits in health and safety and in monitoring and management.
-Close
AIR SCOURING – PLANNING & EXECUTION Craig Newton – “us” – Utility Services
+Abstract
-Close
OPERATION OF AN UPFLOW ANAEROBIC SLUDGE BLANKET REACTOR (UASB) Tony Davies – Earth Tech Engineering
+Abstract
This paper will outline why the UASB was chosen for the Echuca Reclamation scheme, the fundamental concept, process description and optimisation that the process engineers and operations staff encountered during commissioning.
-Close
SEWER PUMP STATION FALL PREVENTION SYSTEM Jarrah Feather – East Gippsland Water
+Abstract
East Gippsland Water (EGW) in conjunction with a private contractor have designed, tested and manufactured a system centred around operator safety to meet the requirements of the regulations, and ease of use. The system consists of a removable grate, which is held in place by multi-functional corner brackets, all aluminium in construction. Within the corner brackets is provision for portable barricading specifically designed for this application to be installed.
The primary function of the grate is to offer fall protection when accessing the wet well, allowing the operator to visually check the well without the risk of falling. The secondary function of the grate is to be completely removable once the barricading is in place, allowing relatively unrestricted access to the pump well and all of its components.
The principle behind the barricading is very similar to an everyday scaffold, the posts are specially designed in aluminium to fit into the corner brackets. The rails are telescopic and have quick action claspers to allow their fitting to a wide range of well sizes and ease of use.
This system has been rated by a structural engineer and is a practical alternative to permanent barricading around wells or the use of fall arrest systems. The grate and brackets are totally hidden below the well lid and the barricading is completely removable, allowing for areas where aesthetics are important.
-Close
ODOUR CONTROL STRATEGIES ON THE REGIONAL OUTFALL SEWER Adrian Harper – Gippsland Water
+Abstract
This paper discusses the different odour control strategies that were tried on the Regional Outfall Sewer in 2003-05 by Gippsland Water. In particular, pH based control will be discussed as a means of suppressing odours associated with hydrogen sulphide.
-Close