Subscribe to our free weekly newsletter
Send news

News tags

mental health  physical activity  earthquake  vacancies  families  public health  children  funding  poverty  health determinants  social  Community development  planning  employment  healthy cities  volunteers  newsletter  youth  volunteering  nutrition  employment opportunity  housing  alcohol and drugs  maori  community engagement  rebuilding  wellbeing  disabilities  Lectures  counselling  Training  earthquake recovery  sustainability  event  community gardens  Community  seminar  Awards  stress  Community Groups  mens health  research  arts  smokefree  culture  men  exercise  migrants  community event  education  environment  resilience  human rights  health  medical  business  sport  conferences  survey  mental wellbeing  Courses  obesity  elderly  support group  environmental health  healthy food  health promotion  violence  pacific health  resources  rebuild  women  race relations  meeting  gardens  workshop  services  leadership  forum  water  disabled  repair  transport  prevention  pacific  dance  fundraising  asian health  sexual health  inequality  cancer  support  disasters  development  mindfulness  dementia  presentation  collaboration  health in all policies  data analysis  recovery  smoking  law  drugs and alcohol  technology  safety  cycling  Sleep  policy  parenting  media  hearing  walking  land  neighbours  social justice  qualification  resilient cities  information  community connection  consultation  oral health  bullying  depression  youth empowerment  young people  activities  non-profit  charity  harm  NURSES  addiction  disease  Communication  alcohol  symposium  submission  anxiety  accessibility  Relationships  eating  economics  Advocacy  eLearning  falls  parking  energy  efficiency  heating  insulation  advice  Eating Disorders  abuse  waste  Matariki  webinar  diabetes  workplace  Film  Climate Change  solutions  urban  management  economy  plan  restoration  Report  Vulnerability  welfare  parks  learning  awareness  emergencies  legislation  injury prevention  reading  Meeting Room  conservation  language  refugees  recreation  built environment  data  venue  urban design  Food  older people  finances  suicide  heritage  gender  recycling  breastfeeding  public  identity  Nursing  submissions  Rainbow  biodiversity  campaign  promotion  Gut Health  diversity  therapy  older adults  sexuality  computing  pollution  School Holidays  Arts Therapy  providers  gambling  Maori health  Cervical cancer  screening  trauma  autism  Governance  treaty of waitangi  care  mentoring  pets  relaxation  Professional Development  pornography  exhibition  history  discrimination  vaping  equity  lockdown  grief  rural  hygiene  participation  tourism  summer  intervention  warning  podcast  science  petition  swimming  roadworks  traffic  wildlife  beaches  pools  immunisation  vaccination  brain  preparation  open day  market  evaluation  noise  music  property  testing  crafts 

Work to end wastewater plant stench starting

Wednesday, May 11, 2022   Posted in: Signatory Notice Board By: Administrator With tags: waste, recovery, management

Christchurch City Council Newsline: 11th May 2022

Southern Demolition and Salvage Ltd will begin the task tomorrow of removing the rotting material from the fire-damaged trickling filters at the Christchurch Wastewater Treatment Plant.

“We have given them the contract to do the job and they will be working 12 hour days, six days a week to remove the filter material," says Christchurch City Council Head of Three Waters Helen Beaumont.

“They are aiming to have the task completed in four months which means that by early September one of the main sources of the stench from the plant will have been eliminated," Ms Beaumont says.

“This is four months earlier than we had originally thought it would be. The contractor has put a really good plan together to get the work done as quickly and as safely as possible.”

“Normally we’d go out for tenders for a project of this size, but we know the smell, which fluctuates depending on the weather conditions, is causing distress for nearby residents and we want to get rid of iit as quickly as possible,” Ms Beaumont says.

“We have fast-tracked our normal procurement process and directly appointed Southern Demolition to do the work. It’s a complex task as the trickling filters have 8 metre-high (three-storeys) concrete walls and there is about 26,000 cubic metres – about the volume of 10 Olympic swimming pools – of material to remove.

“Southern Demolition undertook the trial removal of the material for us in December 2021 so they are aware of the huge job ahead of them. They are going to pull out all the stops to complete the removal work as quickly as possible."

The cost of removing the material from the trickling filters will be funded from an interim payment the Council has received from insurers. The material will be loaded into sealed bins and transported to the Kate Valley landfill where it will be reated as hazardous waste.

“Unfortunately, there are days when the smell could get worse as material deep inside the trickling filters gets exposed to the elements and starts rotting.

“We know this is the last thing that residents want to hear, but at least we now have clear timeframes around when the removal work should be completed" Ms Beaumont says.

”By spring-time the stench from the plant should be much less of an issue."

The rotting material inside the trickling filters is one of the sources of the stench from the wastewater treatment plant.

The other source is the oxidation ponds. They smell because the wastewater that is being discharged into them is not as thoroughly treated as before the fire. 

The wastewater treatment process has been modified to improve the quality of the effluent and aerators have been installed in the oxidation ponds to try to minimise the smell. The odour from the ponds should also reduce at the same time as the work is done on the trickling filters.

Find out more about what is happening with the Christchurch Wastewater Treatment Plant including how to sign-up to get regular e-newsletter updates.