Local Govt | National News Video | Parliament Headlines | Politics Headlines | Search

 


Future proofing at treatment plant

NEWS RELEASE

Future proofing at treatment plant

June 13, 2006


A $16.2 million contract to increase the capacity and efficiency of North Shore City's wastewater treatment plant at Rosedale has been awarded to New Zealand-based contractor Fulton Hogan.

Work on the project, known as the Stage 5 upgrade - inlet works and primary sedimentation tanks - is expected to start next month and finish in December next year.

Chairman of the council's infrastructure and environment committee, Tony Barker, says the upgrade will more than double the capacity of the inlet works and the primary sedimentation tanks; improve efficiency; reduce the amount of screenings that need to be disposed of; further improve reliability; and help to reduce odours.

The structural work will future-proof the plant for another 20 years, based on current population growth projections, and the mechanical work for a further decade. After that time, additional mechanical screens will be needed to further expand capacity.

"The work we have been doing at the plant over some years gives the city a highly efficient, state-of-the-art plant that makes a major contribution to our environment - and that includes helping to keep our streams and beaches clean," says Councillor Barker.

The upgrades also ensure the "Rosedale lake" (oxidation ponds), previously needed as a part of the treatment process, continue to be used simply as a store for high quality treated effluent before discharge at sea.

The extensive structural and mechanical work involved in the project will boost the plant's capacity by 70 per cent, from 2.4 cubic metres per second (cumecs) to nearly 4 cumecs.

Much of the work involves the building of two large concrete sedimentation tanks, each measuring nine by 51 by 4.5 metres deep, the equivalent of two Olympic swimming pools. The covered tanks will provide greatly increased treatment capacity and will be equipped with biological odour control systems.

For additional odour control, a new biofilter will be built to deal with possible odours from the inlet works and primary sedimentation tanks.

New mechanical and electrical systems that operate the many new pumps, valves, gauges and circuits in the plant are also included in the contract.

The Stage 5 upgrade follows a series of upgrades since 1993, with the 1996 Upgrade Number 2 at that time boosting capacity by 70 per cent.

ENDS

© Scoop Media

 
 
 
 
 
Parliament Headlines | Politics Headlines | Regional Headlines

 

Wellington: Predator Free Capital Plan

Wellington City Council (WCC), the Greater Wellington Regional Council (GWRC) and NEXT Foundation, today announced a joint collaboration to make Wellington the first Predator Free capital city in the world. More>>

ALSO:

Gordon Campbell: On Judith Collins’ Efforts At Self Correction

Thousands of prisoners currently in prison may be entitled to an earlier release than expected – and compensation – because Corrections has incorrectly calculated their term of imprisonment. Unless of course, the government buries its mistakes by changing the law and retro-actively getting itself off the hook… More>>

ALSO:

More Justice & Corrections

Sector Opposes Bill: Local Government Bill Timeframe Extended

The Minister of Local Government Peseta Sam Lotu-Iiga has asked the Select Committee to extend the report back date for the Local Government Act 2002 Amendment Bill (No 2). More>>

ALSO:

Breed Laws Don’t Work: Vets On New National Dog Control Plan

It is pleasing therefore to see Louise Upston Associate Minister for Local Government calling for a comprehensive solution... However, relying on breed specific laws to manage dog aggression will not work. More>>

ALSO:

Not Waiting On Select Committee: Green Party Releases Medically-Assisted Dying Policy

“Adults with a terminal illness should have the right to choose a medically assisted death,” Green Party health spokesperson Kevin Hague said. “The Green Party does not support extending assisted dying to people who aren't terminally ill because we can’t be confident that this won't further marginalise the lives of people with disabilities." More>>

ALSO:

General Election Review: Changes To Electoral Act Introduced

More effective systems in polling places and earlier counting of advanced votes are on their way through proposed changes to our electoral laws, Justice Minister Amy Adams says. More>>

Get More From Scoop

 

LATEST HEADLINES

 
 
 
 
 
 
 
 
 
Regional
Search Scoop  
 
 
Powered by Vodafone
NZ independent news