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

 

BusinessDesk: APN's NZME Sees Future In Paywalls, Growth In Digital Sales

APN News & Media has touted a single newsroom concept for its NZME unit in New Zealand, similar to what Germany's Die Welt uses, saying an 'integrated sales proposition' is helping it win market share, including ... More>>

Labour Party: Global Milk Prices Now Lowest In 6 Years

The latest fall in the global dairy price has brought it to the lowest level in six years and shows there must be meaningful action in tomorrow’s Budget to diversify the economy, says Labour’s Finance spokesperson Grant Robertson. “Dairy prices ... More>>

BusinessDesk: NZ Inflation Expectations Creep Higher In June Survey

May 19 (BusinessDesk) - New Zealand businesses lifted their expectations for inflation over the next two years, sapping any immediate pressure on the Reserve Bank to cut interest rates, and prompting the kiwi dollar to jump higher. More>>

BusinessDesk: Lower Fuel Costs Drive Down NZ Producer Input, Output Prices

May 19 - Producer input and output prices fell in the first quarter, mainly reflecting lower fuel costs and weakness in prices of meat and dairy products. More>>

Media: Fairfax Media NZ Announces Senior Editorial Team

Fairfax Media New Zealand has today confirmed its new editorial leadership team, as part of a transformation of its newsrooms aimed at enhancing local and national journalism across digital and print. More>>

Science: Flavonoids Reduce Cold And Cough Risk

Flavonoids reduce cold and cough risk Research from the University of Auckland shows eating flavonoids – found in green tea, apples, blueberries, cocoa, red wine and onions – can significantly reduce the risk of catching colds and coughs. The research, ... More>>


BusinessDesk: RBNZ House Alert Speech The Catalyst For Government Action

Prime Minister John Key all but conceded that pressure from the Reserve Bank of New Zealand for concerted action on rampant Auckland house prices was one of the main catalysts for the government's weekend announcements about tightly ... More>>

BusinessDesk: How To Fall Foul Of The New Housing Tax Rules: Tips From IRD

Just because you rented out your investment property doesn't absolve you from paying tax, says the Inland Revenue Department in a summary of commonly made mistakes by non-professional property investors when it comes to their tax liability.More>>

Legal: Superdiversity Law, Policy And Business Stocktake Announced

Mai Chen, Managing Partner at Chen Palmer New Zealand Public and Employment Law Specialists and Adjunct Professor of Law at the University of Auckland, today announced the establishment ... More>>

Housing: More House Price Gains Expected

House price expectations remain high, with a net 56% of respondents expecting house prices will increase. Fears of higher interest rates are fading, consistent with the RBNZ’s signals this year. Affordability and a lack of houses for ... More>>

TDDA: State-Of-The-Art Drug Testing Laboratory To Open In Auckland

World leading drug testing agencies, The Drug Detection Agency (TDDA) and Omega Laboratories, open New Zealand laboratory More>>

Network: Bigpipe Launches Ultra-Fast Broadband Into Wellington

Bigpipe Launches Ultra-Fast Broadband into Wellington Naked broadband provider Bigpipe has extended its national reach, announcing today, the launch of its unlimited UFB offering into Wellington. The Spark Venture business is giving Wellingtonians the ... More>>

Get More From Scoop

 
 
 
 
 
 
 
 
 
Business
Search Scoop  
 
 
Powered by Vodafone
NZ independent news