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Yarra Valley Water's trade waste system
- 1. Yarra Valley Water Breakfast Workshop Thursday 2 September 2010
- 2. Workshop Agenda Ian Innes-Wardell Introduction Questions Maurice Hanratty (Regulatory Economist) Setting the Price: How Trade Waste Prices are determined John Dennis Changes to parameters & pricing Ian Innes-Wardell Close John Dennis (Manager Trade Waste team) Introduction to Trade Waste and Summary of Review
- 3. Trade Waste Workshop - Recent Changes & Review Update John Dennis Trade Waste Manager Maurice Hanratty Regulatory Economist September 2010 Thanks to todayโs sponsor
- 21. Questions ?
Editor's Notes
- Welcome to everyone and thank you for coming along today. Iโd like to thanks to Cadbury, one of our valued waterMAP customers, for sponsoring our workshop. I am Ian Innes-Wardell Project Manager with YVWโs Business water Conservation Team Workshop โ based on your feedback and the popularity of last quarterโs workshop, once again weโre offering you a workshop. Todayโs topic is changes to the trade waste system Todayโs Speakers are John Dennis Manager of the YVW Trade Waste Team and Maurice Hanratty our regulatory economist with YVWโs Regulatory and Planning Team
- What is Trade Waste? Trade waste : Liquid waste discharged into the sewer which consists of: (a) any liquid, and any substance contained in it, to be discharged from trade premises; or (b) any waste matter consisting solely or partly of food, which results from any process connected with the preparation, on other than private residential premises, of food for consumption; or (c) any matter to be discharged from any laundry used for: (i) the purposes of a private or public hospital, school or any other institution; or (ii) the purposes of an hotel, motel or similar establishment; or (iii) commercial purposes, or for which a user pays a fee; or (d) any matter to be discharged: (i) from any cooling, refrigeration or air-conditioning system on trade premises; or (ii) from any ship's ballast; or (iii) as polluted storm-water run-off; or (iv) as run-off from water used to extinguish a fire or to deal with any other hazard or emergency on trade premises; or (v) as leachate from any private, commercial or municipal tip; or (vi) as sewage sludge from a sewage dump point: and includes any waste matter from any trade premises but does not include waste-water discharged from private residential premises. [Water Industry Regulations 2006] Trade waste is any industrial waste other than normal domestic sewage. It may contain chemicals, fats or detergents. It is typically wastewater as a result of a washing, cleaning or rinsing process. It may also be liquid food waste. A detailed definition is provided in regulations made under the Water Industry Act 1994. Only trade waste which complies with specific guidelines may be discharged into the sewerage system. We accept a variety of industrial and commercial trade waste that complies with guidelines. Why manage Trade Waste? Yarra Valley Water manages trade waste to ensure the proactive protection of: Our People - by protecting the occupational health and safety of Yarra Valley Water personnel and the general public in and around the sewer environment. Our Sewerage Infrastructure - by ensuring wastes received into the sewerage system are of a quality and quantity that does not severely impact the integrity of our sewerage assets; Our Treatment Plant Processes - to ensure the efficient treatment of all sewage collected; and Our Environment - to ensure sewerage services result in minimal environment impact, including consideration of recycled water and biosolids reuse opportunities.
- In Our Water Our Future the Victorian Government established a review of the trade waste management framework to reduce environmental impacts, facilitate water and biosolids recycling and support water conservation. Summary of recommended reforms: - Restate objectives in a way that defines where trade waste management should facilitate recycling, and enable conflicts arising from objectives to be resolved. Appoint the Essential Services Commission (ESC) as regulator of trade waste management and introduce regulatory decision making processes that are consistent, open and timely. ย The ESC will develop a trade waste Code of Practice, guidelines and processes for setting prices, dispute resolution as well as arbitration arrangements. - Continue recent refinements in prices for treatable trade wastes and encourage water businesses to consider prices on other less treatable substances, such as salts, where appropriate. - Improve state-wide reporting of data on trade waste and identify waste streams available for reuse. - Require ESC to undertake periodic reviews of any new agreements that are outside published acceptance standards to ensure that the agreements and there level of confidentiality remain in the public interest. Further transparency measures could be later considered if the ESC reviews suggest that this is necessary. - Support and encourage voluntary cleaner production and other partnership programs. - Create a more uniform, improved and transparent set of operational arrangements across Victoria for trade waste.
- In Our Water Our Future the Victorian Government established a review of the trade waste management framework to reduce environmental impacts, facilitate water and biosolids recycling and support water conservation. Summary of recommended reforms: - Restate objectives in a way that defines where trade waste management should facilitate recycling, and enable conflicts arising from objectives to be resolved. Appoint the Essential Services Commission (ESC) as regulator of trade waste management and introduce regulatory decision making processes that are consistent, open and timely. ย The ESC will develop a trade waste Code of Practice, guidelines and processes for setting prices, dispute resolution as well as arbitration arrangements. - Continue recent refinements in prices for treatable trade wastes and encourage water businesses to consider prices on other less treatable substances, such as salts, where appropriate. - Improve state-wide reporting of data on trade waste and identify waste streams available for reuse. - Require ESC to undertake periodic reviews of any new agreements that are outside published acceptance standards to ensure that the agreements and there level of confidentiality remain in the public interest. Further transparency measures could be later considered if the ESC reviews suggest that this is necessary. - Support and encourage voluntary cleaner production and other partnership programs. - Create a more uniform, improved and transparent set of operational arrangements across Victoria for trade waste.
- AIG: Australian Industry Group PACIA: Plastics and Chemical Industry Association ( PACIA )
- Conversion factors for concentrations: TN -> TKN 0.8472 TDS -> ITDS 0.5533
- TKN = Organic N + Ammonia N (as ammonium ion or ammonia gas) MWC Water Plan 2009 p208: Total Kjeldahl Nitrogen, rather than Total Nitrogen, is considered the most appropriate load parameter as it more closely reflects the drivers of significant future capital and operating costs associated with meeting these discharge requirements. It can also be measured with greater accuracy than Total Nitrogen. The possibility of refining this load parameter from Total Nitrogen to Total Kjeldahl Nitrogen was raised in the 2005 Water Plan and is broadly supported by the retail water businesses. Total Nitrogen is Total Kjeldahl Nitrogen plus nitrates and nitrites. Organic N is readily converted to ammonium by microorganisms which remove nitrogen from wastewater. Nitrates and nitrites can be used by microorganisms in treatment plants to remove nitrogen from wastewater.
- ITDS MWC Water Plan 2009 p208: In the 2009 regulatory period it is proposed to move to Inorganic Total Dissolved Solids despite retail water businesses not proposing to include these prices in their 2009 Water Plans. Introducing Inorganic Total Dissolved Solids will: ๔ Address concerns raised by customers in relation to double counting between Total Dissolved Solids and Biological Oxygen Demand ๔ Create more meaningful pricing signals for industry as to the factors limiting greater use of recycled water. There is ongoing debate about which of the compounds contributing to salinity levels are more important to target in terms of pricing. To a large extent this depends on the end-use of the recycled water, particularly where that end-use is agricultural. For example, Inorganic Total Dissolved Solids affects the osmotic capacity of plants (the ability of plants to draw up water from the soil), whereas sodium has more of an impact in relation to phytotoxicity and soil structure. Conversely, reuse in industrial applications is driven by reductions in Inorganic Total Dissolved Solids (and possibly other specific components contributing to Inorganic Total Dissolved Solids such as calcium which causes scaling in equipment), whereas sodium in its own right does not appear to be a particular concern. While it will be important to target sodium loads, and send appropriate pricing signals, it will also be important to target Inorganic Total Dissolved Solids with the aim of reducing salinity in its entirety to meet electrical conductivity, Total Dissolved Solids, sodium, and sodium absorption ratio requirements. The shift from charging for Total Dissolved Solids to Inorganic Total Dissolved Solids is seen as a natural first step as there is industry-wide data available for Inorganic Total Dissolved Solids as compared to sodium. Therefore, it should be readily achievable at both the bulk and retail levels and result in a more targeted price. Stevens, Daryl, Growing Crops with Reclaimed Water (CSIRO 2006) p64: Dissolved inorganic elements (chloride, sulfate, sodium, boron, calcium, magnesium) โ Chloride, sodium and boron are toxic to plants and determine the suitability for agricultural reuse. Increases hardness leading to scaling and corrosion of irrigation equipment. Imparts colour to wastewater and affects aesthetic/quality/public perceptions.
- Risk rank is calculated based upon the following criteria; Location โ dependant on which STP the discharge is to. Volume โ the maximum daily consented volume of the discharge. History โ the compliance history over the last 3 years. Activity โ activities are weighted according to their inherent risk. Substance โ linked to activity Class โ based on industry type >150 = rr1 >120 =2 >90 = 3 >50 = 4 <50 = 5
- And finally Itโs waterMAP progress reporting time. All the data has been loaded into the waterMAP on-line tool. Please feel free to complete your progress report on your own, or if you need assistance we will be sending invitations to the workshops shortly. As always, your account manager is here to help so please give them a call. I like to thank the BWC team โ Ian, Katerina & Suzette for pulling this event together today. For those staying on for the trade waste workshop or the focus group, please refresh your coffee at the back of the room & move through to the next session starting at 9:15am. Trade Waste workshop โ outside on the left in the Sir Norman Brookes Room Focus Group โ will be held in this room, so please stay here Networking โ please head out onto the verandah