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Grasses Used to Help Purify Sewage
The plant at Forrest Hill, west of Brisbane, is using floating mattresses of plants to purify sewage.

Queensland Urban Utilities said the trial was a Queensland first and involved growing native varieties of grass on specially engineered plastic mattresses.

They have been used to grow 400 varieties of wetland grass plants, which draw toxins out of the water — things like carbon, nitrogen and phosphorus. It's a natural way to cleansing the waste water, that does not require chemicals or electricity.

Once the water is treated by the native grasses, it is purified with chlorine and then pumped to a local farmer who uses it for irrigating his crop.


 
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Wisconsin’s Efforts and Successes in Addressing AIS - Two online reports document progress made in 2011-12 in preventing the introduction and spread of invasive species in Wisconsin lakes, rivers, forests and wetlands. Invasive species such as the emerald ash borer, Eurasian watermilfoil and garlic mustard cost billions of dollars annually across the nation and threaten business sectors such as agriculture, tourism and forestry.


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