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.


© Scoop Media

Parliament Headlines | Politics Headlines | Regional Headlines

Teachers Strike: Nationwide Rallies And Marches

Teachers and principals voted for a full day strike to be held on 15 August to send a strong message to the Government that the current collective agreement offers from the Ministry of Education would not fix the crisis in teaching.

"There needs to be better investment in education so every child can reach their potential and we have enough teachers for every class", said NZEI Te Riu Roa lead principal negotiator Louise Green. More>>


Wellington.Scoop: City Council Ends Its Support For Jackson’s Movie Museum

The Wellington City Council and the Movie Museum Limited have today announced a mutually-agreed parting of the ways for a joint project between the Council’s Convention Centre and TMML’s Movie Museum... Both parties remain optimistic for the future of their respective projects. More>>

Pay Equity: Historic Settlement For Education Support Workers

The New Zealand Educational Institute (NZEI) and the Ministry of Education today signed Terms of Settlement to address a pay equity claim for 329 support workers who work with very young children in early childhood and primary schools. More>>


Gordon Campbell: On The Stereotypes About Jacinda Ardern

Routinely, female politicians get depicted as either show ponies or battle axes, with little room for anything else in between. .. More>>

Weekend Interviews: "Discriminatory And Racist" Aussie Deportations

The former president of Australia’s Human Rights Commission Gillian Triggs says deportations have risen dramatically in Australia since 2014 when ministers and ministerial delegates were given the power to cancel visas - and half of those being deported are New Zealanders. "These are massive numbers, actually escalating dramatically."... More>>


Legal Challenge: Prisoner Has 9 Boxes Of Documents Seized

Human rights organisation People Against Prisons Aotearoa says a prisoner they advocate for has had 9 boxes of legal documents seized from him just days before his case against the Department of Corrections was to be heard. More>>

Single-Use Plastic Bags: Govt To Phase Them Out

Single-use plastic shopping bags will be phased out over the next year, Prime Minister Jacinda Ardern and Associate Environment Minister Eugenie Sage announced today. More>>


Lesser Politicians: ACT Conference Promises Fewer Politicians

Party Leader David Seymour today revealed his Smaller Government Bill which will reduce the size of Parliament to 100 MPs, limit the size of the Executive to 20 Ministers, and remove the Maori seats. More>>





Featured InfoPages