Consultant for Lake Te Koutu
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From: Leny Samuel
Dear Waipa District Council,
What is the name of the consultant hired by Waipa district council to consult about improving water quality of Lake Te Koutu in Cambridge?
What are the specific reasons that lead the council to believe that nanobubbles technology would not be effective or would have only limited benefits?
Mr. Kurian S.
Waipa District Council
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From: Bruce Airey
Waipa District Council
Dear Mr. Kurian S,
In response to the information requested please see the following
responses in red -
What is the name of the consultant hired by Waipa district council to
consult about improving water quality of Lake Te Koutu in Cambridge?
The consultant was GHD
What are the specific reasons that lead the council to believe that
nanobubbles technology would not be effective or
would have only limited benefits?
Lake is unlikely to be permanently stratified, due to shallow depth and
Introduction of oxygen can limit influence of anoxic conditions in the
water column, but it is not known whether the lake is
exhibiting these conditions or driving degradation of lake quality.
Kessels (2015) point to saturation of oxygen, suggesting
further oxygen enrichment would result in limited benefits.
Multiple alternative drivers for degradation and range of assumptions make
it unclear whether the system will perform as
Bruce Airey Manager Community Facilities WAIPA DISTRICT COUNCIL
[email address] | www.waipadc.govt.nz
DDI: 07 823 3822 | FAX: 07 872 0033| MOB: 027 202 1708
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