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

 

Severe odours at Wastewater Treatment Plant


Severe odours at Wastewater Treatment Plant from digesters failure


A failure of the digesters at the Wastewater Treatment Plant in Bromley is causing severe odour release from the plant.

Operations and Maintenance Manager Mike Bourke said that bringing the digesters back to health requires careful nursing of the process conditions and the loads applied to the digesters. This entails storage of some of the raw sludge in the lagoons which is the source of the odour release from the plant at the moment.

“The reason for the digester failure is not known for certain, but it seems it may be due to the discharge of a large volume of some material that has caused the upset to the digestion process,” said Mike Bourke.

“Investigations are continuing to determine the exact cause. Samples have been sent away for analysis, and possible industrial sources are being investigated and sampled.”

The strong smells could last for several weeks but should abate after that time, said Mike Bourke. He adds that this situation will not impact on discharge into the estuary as the solids are still being removed. Meanwhile, covers are being placed over the open lagoons to reduce the odour release. To help speed the recovery of the digesters, lime is being dosed into the process to correct the pH imbalance.

Digestion is a biological fermentation process that is susceptible to chemicals which can kill the friendly bacteria in the process. The purpose of the digestion process is to convert the settled solids into a form that make these solids useful as a fertiliser. The process also produces methane gas which is used as a fuel at the plant. The failure of the digestion process causes a reduction in gas production and quality.

ENDS

© Scoop Media

 
 
 
Parliament Headlines | Politics Headlines | Regional Headlines

Supreme Court: Worksafe Decision On Whittall Pike River Prosecution Unlawful

The question in issue on the appeal was whether WorkSafe New Zealand acted to give effect to an unlawful agreement of this nature when it offered no evidence on charges against Peter William Whittall for breaches of the Health and Safety in Employment Act 1992...

The Supreme Court... has found that the decision to offer no evidence was made under an unlawful agreement to stifle prosecution. It has granted a declaration to that effect. More>>

 

Cullen To Chair: Tax Working Group Terms Of Reference Announced

Finance Minister Grant Robertson and Revenue Minister Stuart Nash today announced the Terms of Reference for the Tax Working Group and that the Group will be chaired by Sir Michael Cullen. More>>

ALSO:

Gordon Campbell: On The New Pike River Agency (And The Air Strike Wing)

Much of the sympathy the public still feels for the families of the Pike River miners has been sustained by the sense that the previous government – let alone the mining company and the processes of receivership and litigation – has never dealt honestly, or fairly, with them. More>>

ALSO:

Not Going Swimmingly: Contractor Cut, New Dates For Christchurch Sports Centre

“As an incoming Minister, I have been conducting a thorough review of progress on the Anchor projects and to learn of a $75 million budget blowout on this project was very disappointing..." More>>

ALSO:

Tertiary: Allowances, Loan Living Costs To Get Boost

“From 1 January, student allowance base rates and the maximum amount students can borrow for living costs will rise by a net $50 a week,” says Education Minister Chris Hipkins... further adjusted from 1 April 2018 in line with any increase in the CPI. More>>

ALSO:

Foreign Affairs: Patrick Gower Interviews Jacinda Ardern

Prime Minister Jacinda Ardern says discussions have already begun on how to bring climate change refugees into New Zealand under a Pacific seasonal employment plan... More>>

ALSO:

Gordon Campbell: On The Centre Right’s Love Of ‘Nanny State’

You’d almost think it was 2005 again. That was a time when the rugged individualists of the centre-right were being beset by government regulations on the nature of light-bulbs, the size of shower heads, the junk food available at school tuck shops and other such essentials... More>>

 
 
 
 
 

LATEST HEADLINES

  • PARLIAMENT
  • POLITICS
  • REGIONAL
 
 

Featured InfoPages

Opening the Election