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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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Officials Document Water Hyacinth in Kerala since 1914 - Water hyacinth is a free floating aquatic plant that is native to South America. One of the fastest growing plants known, water hyacinth can double their population in two weeks. When not controlled, the aquatic plant will cover lakes and ponds entirely, dramatically affecting water flow, blocking sunlight from native aquatic plants and starves the water of oxygen, often killing fish and turtles.


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