Notes on Water Accounting


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Unformatted text preview: applied at two levels: 1. The Input –Output Model provides a consistent approach for quantifying flows into, and out of, reporting entities, based on their sources and destinations, and 2. The Operational Model provides guidance for companies for water processes within their operations. This is of more value to businesses, which currently do not have an effective operational water model or see an opportunity in developing this new approach. 1 (Minerals Council of Australia, 2012) 2 (Shinde, 2010) 3 (Minerals Council of Australia, 2012) Figure 1: Model of Water Accounting Framework from MCA4 The Operational Model describes the flows internal to the operational facility i.e. the flows between the stores, tasks and treatment plants. The purpose of this model is to find out the amount of reuse and recycling efficiency. The water in this model is either considered raw, worked or treated. Raw water is water that is received as an input and has not been used in a task. Worked water is water that has been through a task. Treated water is water that has been treated on- site to provide water of a suitable quality for a particular purpose. The Input- Output Model describes the flows between the environment and the boundary of the operational facility i.e. the inputs, the outputs and diversions. An Input is defined as a volume of water received...
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