New Zealand to have the world’s largest floating wetland!

30 September 2011

Rotorua to get the world's largest floating island!

What is believed to be the world’s largest manmade floating wetland should be ready to be launched on Lake Rotorua before the end of the year as a major environmental enhancement project to help restore the lake’s water quality.  It is estimated that the floating island will remove up to four tonnes of nitrogen and over 1,000 kilograms of phosphorus from the lake every year.  Technology used in construction of the rugby field sized floating wetland will involve the recycling of more than half a million plastic soft drink bottles to be transformed into an expansive 5,100 square metre floating fibre mat.

The NZ$900,000 environmental initiative is a partnership of Rotorua District Council, Bay of Plenty Regional Council and Te Arawa Lakes Trust. It follows the successful development of a smaller scale floating wetland on another Rotorua lake, Rotoehu, earlier in the year.

Science has shown that strategically located floating wetlands were at least four times more effective at stripping nutrients from water, like nitrogen and phosphorus, than conventional terrestrial wetlands.

BioHavens rule!  Imagine what they could do in a dam like Hartbeespoort in South Africa?!  Problems solved!

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