Water Sensitive Design
Integrating water supply, sewerage and stormwater in the human environment to conserve ecology is a design choice that comes with very real and substantial costs. The benefits – if we can afford them – are clean water and vibrant environments.
eWater’s main role is to support the implementation and use of eWater Source as the National Hydrological Modelling Platformin Australia. To that end, our government owners contract us to provide these ‘adoption’ services in support of the Australian Council of Australian Government’s (COAG) National Hydrological Modelling Strategy. This includes provision of long term maintenance and improvements to Source, and providing technical support and training.
We also collaborate with members of our modelling community to develop Source and share knowledge and resources for innovation and best practice in water management. Our Source project work is also part of the capacity we bring to the Australian water industry.
Also important to our role in water management capacity building is our Toolkit suite of water and environmental management tools and resources. The most widely used tool is our stormwater modelling product, MUSIC, which continues to lead the way in decision support for stormwater quality management and water sensitive urban design.
We are building strategic relationships with international river and water management organisations to facilitate the use of Source and Toolkit models around the world, especially in developing and emerging countries.
A fly through of a water sensitive city
Roads and Drainage
Porous Pavement 1
In urban environments, impermeable surfaces (streets, footpaths, rooftops etc.) dominate the landscape, preventing rainwater from following a natural cycle of absorption. As much as 75-80% of the rainwater runs into stormwater/sewer systems carrying contaminants from the air and roadways. This water flows untreated into lakes, rivers and harbours. In some cases, it may cause overflows of sanitary sewer systems, causing the dumping of untreated sewage (combined sewer overflow) into our waterways.
Porous Pavement 2
Porous Pavement 3
The Rocla Up-Flo™ Filter is the most efficient high rate stormwater filtration technology available for the removal of sediments, nutrients, metals and hydrocarbons. As the industry’s only fluidised bed up-flow filtration technology, the Up-Flo™ Filter provides a higher level of treatment of stormwater runoff, a higher rate of filtration, longer life of filter media and a longer maintenance cycle than other filter systems.
The Rocla Up-Flo™ Filter is available in multiple configurations, has a small footprint and removes >90% total suspended solids (TSS) with a mean particle size of 20 microns.
The earth’s atmosphere is packed with moisture. It is a huge freshwater reserve: 13000km3. Eole Water has created an innovative technology which is able to turn this moisture into drinking water.
This is done using a condenser with a moisture exchange surface which is one meter wide and five kilometers long. It is equipped with a revolutionary “food safe” stainless steel quality alloy, especially adapted to producing drinking water. It can sustain the water creation process for decades, without risk of corrosion.
The water then flows through a five-tier water treatment system, including an ultraviolet filter, in order to make it perfectly safe to drink. The quality of water collected exceeds the drinking water standards required by the World Health Organization.
The water production machine can collect up to 1500 liters of water a day depending on the climate.
From the annals of the astonishingly simple and cheap.
Locally manufactured ceramic filters have traditionally been used throughout the world to treat household water. Currently, the most widely implemented ceramic filter is the Potters for Peacedesign. The filter is flowerpot shaped, holds about 8-10 liters of water, and sits inside a plastic or ceramic receptacle. To use the ceramic filters, families fill the top receptacle or the ceramic filter itself with water, which flows through the ceramic filter or filters into a storage receptacle. The treated water is then accessed via a spigot embedded within the water storage receptacle. The filters are produced locally at ceramics facilities, and then impregnated with colloidal silver to ensure complete removal of bacteria in treated water and to prevent growth of bacteria within the filter itself. Numerous other locally-made and commercial ceramic filters are widely available in developed and developing countries. http://www.cdc.gov/safewater/ceramic-filtration.html#economics
The filter is made from durable plastic approximately 10 inches in length and 1 inch in diameter. The internal components include membranes, iodized crystals and active carbon, which removes the iodine taste and medium-sized bacteria and is effective against waterborne bacteria and viruses, such as typhoid, cholera, E. coli, dysentery and diarrhea. The two-stage filtration system reduces harmful particles, from 125 micron down to a minimal 15 micron.