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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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Challenges Facing Great Lakes Water Quality - A joint United States-Canadian agency released a report making more than 30 recommendations to improve water quality across the Great Lakes. Several key recommendations of the report include setting standards and timelines to eliminate untreated sewage, reducing nutrient runoff from farms, and cutting back on man-made pollution from chemicals.


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