Alternative Water Solutions
ALTERNATIVE WATER SUPPLY As the price of mains water continues to rise and the private water supply industry evolves, alternative water supply systems are becoming increasingly economically viable.
APPLICATIONS Most non-potable applications are suitable for alternative water supply. Common end uses include: • Agriculture • Process Water • Cleaning • Remote Fire Protection • Cooling • Toilet Flushing • Dust Suppression • Wash Water • Irrigation • Water Features The viability of an individual alternative water supply system typically depends on several factors: • Availability of a suitable alternative water source • Ease with which the water source can be harvested • Treatment required to supply the end use • Optimisation achieved through planning, design and delivery • Indirect financial benefits such as enhanced marketability or employee • Funding sources and required payback period
ALTERNATIVE WATER SOURCES Alternative water sources are typically sources of water that are locally available but unsuitable for drinking. Onsite sources such as roofwater, stormwater and process water are preferred as they can often be accessed with low or no licensing or environmental approval cost, are closer to the point of use and have a manageable catchment that reduces the risk of contamination.
Roofwater is rainwater that runs off non-trafficked roofs. It is typically high quality water and is applicable to most industrial processes with minimal treatment.
Stormwater is rainwater that runs off trafficked areas such as car parks. It is of relatively lower quality compared to roofwater and requires more treatment however it also offers a more abundant source of supply as the catchment area includes both roof and ground level areas.
Process water is water that has passed through an industrial process such as a washing facility. Depending on the quality and volume of recovered process water it may be viable to treat and reuse directly or as part of a larger supply system that includes roofwater or stormwater harvesting.
HARVESTING SYSTEMS Most alternative water supply systems, such as roofwater or stormwater harvesting systems, have common diversion, storage, treatment and distribution components. Planning of these systems also has several key common elements to consider:
Supply and Demand • Identifying • Assessing • Identifying
suitable end uses for the available alternative water source. the volume of water needed to meet the end use demand. suitable catchments to supply the volume of water.
Option Development • Understanding
the infrastructure needed for diversion, storage, treatment and distribution and developing options for that infrastructure.
Optimisation • Optimising
the preferred infrastructure option using technical and economic analysis to balance capacity, water savings and costs.
STORMWATER HARVESTING SYSTEM
For more information contact us at: E: firstname.lastname@example.org
P: (02) 9518 9257
A: 143 St Johns Rd, Glebe, NSW 2037