Video | Agriculture | Confidence | Economy | Energy | Employment | Finance | Media | Property | RBNZ | Science | SOEs | Tax | Technology | Telecoms | Tourism | Transport | Search

 


Kiwi environmental innovation receives international honours

MEDIA RELEASE

Tuesday 19 August 2014

Kiwi environmental innovation receives international honours

Beca has been awarded Global Winner for the Design Projects Category of the 2014 International Water Association (IWA) Global Project Innovation Awards Competition. The design work on Contact Energy’s Wairākei bioreactor is a Kiwi innovation and the only New Zealand winner announced at the internationally recognised 2014 IWA Global Project Innovation Awards in Portugal. Jointly developed by Beca and Contact, the bioreactor is a unique, world-first solution to improve the quality of water that is discharged from the iconic Wairākei geothermal power station into the Waikato River.

“To work with Contact Energy from the beginning, developing and testing innovative concepts through to the design and construction of the Wairākei bioreactor has been immensely rewarding for the Beca team”, says Beca CEO, Greg Lowe. “This is another great example of New Zealand talent delivering world class project outcomes.”

“I’m immensely proud of our bioreactor,” says Contact Energy CEO, Dennis Barnes. “As a world-first it’s great to see this example of Kiwi ingenuity recognised at an international level.”

The Wairākei bioreactor was developed to reduce hydrogen sulphide (H2S) discharges from the Wairākei geothermal power station to the Waikato River. This was identified through a 10-year programme of environmental and technical studies which examined the environmental impacts from the on-going operation of the power station. These studies showed that H2S levels in the Waikato River downstream from the Wairākei power station were impacting the water quality.

The bioreactor was developed as a treatment facility for the reduction of H2S in the cooling water by harnessing the power of billions of naturally occurring sulphide oxidising bacteria endemic to the Waikato River.

In creating this solution Beca engineers used several innovative engineering techniques, including:

•A tubular biofilm reactor designed around a large network of almost 400 kilometres of pipes that create an environment for the bacteria to live and grow

•Excavated soil and pumice from the site was mixed with concrete to hold the 1900 parallel polythene pipes in place, saving considerable costs and

•A syphon configuration for the bioreactor hydraulic design lowers the pumping head to minimise power usage and also contributes to significant cost savings.

To date, the bioreactor is reducing H2S in the cooling water discharges by almost 8,000 kilograms per week. It is also on track to achieving the August 2016 milestone of an overall reduction of 95 per cent.

The IWA Global Project Innovation Awards is a prestigious global competition which recognises and celebrates innovation and excellence in water engineering projects around the world.

The Wairākei bioreactor was recently given the accolade Gold Award of Excellence at the ACENZ (Association of Consulting Engineers) 2014 INNOVATE NZ Awards and entered for the IChemE Awards 2014 in recognition of chemical engineering innovation and excellence. Last year it was also awarded the ‘Energy Project of the Year’ and ‘Environmental Excellence’ awards at the 2013 Deloitte Energy Excellence Awards (NZ) and received the 2013 New Zealand Engineering Excellence Award in the Chemical, Bio and Food category.

Ends

© Scoop Media

 
 
 
 
 
Business Headlines | Sci-Tech Headlines

 

Sky City : Auckland Convention Centre Cost Jumps By A Fifth

SkyCity Entertainment Group, the casino and hotel operator, is in talks with the government on how to fund the increased cost of as much as $130 million to build an international convention centre in downtown Auckland, with further gambling concessions ruled out. The Auckland-based company has increased its estimate to build the centre to between $470 million and $530 million as the construction boom across the country drives up building costs and design changes add to the bill.
More>>

ALSO:

RMTU: Mediation Between Lyttelton Port And Union Fails

The Rail and Maritime Union (RMTU) has opted to continue its overtime ban indefinitely after mediation with the Lyttelton Port of Christchurch (LPC) failed to progress collective bargaining. More>>

Earlier:

Science Policy: Callaghan, NSC Funding Knocked In Submissions

Callaghan Innovation, which was last year allocated a budget of $566 million over four years to dish out research and development grants, and the National Science Challenges attracted criticism in submissions on the government’s draft national statement of science investment, with science funding largely seen as too fragmented. More>>

ALSO:

Scoop Business: Spark, Voda And Telstra To Lay New Trans-Tasman Cable

Spark New Zealand and Vodafone, New Zealand’s two dominant telecommunications providers, in partnership with Australian provider Telstra, will spend US$70 million building a trans-Tasman submarine cable to bolster broadband traffic between the neighbouring countries and the rest of the world. More>>

ALSO:

More:

Statistics: Current Account Deficit Widens

New Zealand's annual current account deficit was $6.1 billion (2.6 percent of GDP) for the year ended September 2014. This compares with a deficit of $5.8 billion (2.5 percent of GDP) for the year ended June 2014. More>>

ALSO:

Still In The Red: NZ Govt Shunts Out Surplus To 2016

The New Zealand government has pushed out its targeted return to surplus for a year as falling dairy prices and a low inflation environment has kept a lid on its rising tax take, but is still dangling a possible tax cut in 2017, the next election year and promising to try and achieve the surplus pledge on which it campaigned for election in September. More>>

ALSO:

Job Insecurity: Time For Jobs That Count In The Meat Industry

“Meat Workers face it all”, says Graham Cooke, Meat Workers Union National Secretary. “Seasonal work, dangerous jobs, casual and zero hours contracts, and increasing pressure on workers to join non-union individual agreements. More>>

ALSO:

Get More From Scoop

 
 
Standards New Zealand

Standards New Zealand
 
 
 
 
 
 
 
 
Business
Search Scoop  
 
 
Powered by Vodafone
NZ independent news