Biosolids Storage and Reuse

Overview

Biosolids Project Page

Hunter Water is investing $6.1M to provide and improve biosolids handling facilities at nine wastewater treatment plants.

Why is this project needed?

Biosolids are a byproduct of the wastewater treatment process and are beneficially re-used in agriculture and mine site rehabilitation. Prior to transportation and re-use biosolids need to be appropriately handled and stored to ensure their content does not escape to waterways and the surrounding environment.

What are Biosolids?

Biosolids consist mainly of a mix of water andorganic materials including nitrogen, phosphorous, potassium and sulphur; and micronutrients including copper, zinc, calcium, magnesium, iron, boron, molybdenum and manganese. The nature of biosolids varies depending upon the treatment process used at the plant, and the content of the raw wastewater received by the individual treatment plants. Between 6,000 and 7,000 dry tonnes of biosolids are produced annually and are beneficially reused by customers within the Hunter region.

Where will the work be occurring?

This project will provide appropriate biosolids storage at Belmont, Boulder Bay, Cessnock, Edgeworth, Karuah, Kurri Kurri, Morpeth, Raymond Terrace and Toronto wastewater treatment plants.

What will this project involve?

  • Provision of non-permeable storage areas to fully contain biosolids. This will ensure content does not leach into waterways and the environment.Diversion of stormwater away from biosolids storage areas.
  • Draining to ensure stormwater that collects within biosolids storage areas is returned to the wastewater treatment system.
  • Upgrading of vehicle access and fencing if required.

How will this project affect me?

Hunter Water will write to community members located near the treatment plants to let them know about this project. Nearby residents may notice additional truck movements and activity during construction. It is not anticipated that this project will result in ongoing inconvenience to community members due to biosolids handling and storage.

Re-using Biosolids

How are Biosolids re-used?

With its high nutrient content biosolids are useful for pasture improvement and land rehabilitation. Before being transported to customers, biosolids are stored to allow for evaporation and stabilisation to occur. Storage on-site also allows for batches of biosolids to be combined to standardise content, and to meet the delivery timeframes of customers.

The quality of biosolids delivered to customers needs to meet the NSW Environment Protection Authority's Environmental Guidelines for the Use and Disposal of Biosolids Products (2000).

The picture below shows native plant re-establishment on ground treated with biosolids at a Hunter Valley coal mine.

Biosolids 2016 Dragline

The picture below shows cattle grazing on a Hunter Valley pasture that has been improved by biosolids application.

Biosolids 2016 Cows on Pasture thumbnail

Locations and Construction Timeframes

This project will provide appropriate biosolids storage at Belmont, Boulder Bay, Cessnock, Edgeworth, Karuah, Kurri Kurri, Morpeth, Raymond Terrace and Toronto wastewater treatment plants. Minimising any convenience to community members is an important aim of all Hunter Water projects. Noise, dust and odour emissions will be regularly monitored throughout the project.

This page will be regularly updated with the latest construction timeframes.

Belmont

Work will commence in early 2017.
Further details will be provided. 

Boulder Bay

Work will commence in early 2017.
Further details will be provided.

Cessnock

  • Work on site will commence in mid-March 2017 and will take approximately 12 weeks to complete
  • Usual working hours are Monday-Friday 7am to 6pm, and 8am to 1pm Saturday
  • There will be some additional truck movements along Government Road
  • Properties closest to the Treatment Works may notice some construction noise at some times.

Edgeworth

Work will commence in early 2017.
Further details will be provided.

Karuah

  • Work will commence in late-February 2017 and will take approximately 12 weeks to complete.
  • Usual working hours are Monday-Friday 7am to 6pm, and 8am to 1pm Saturday.
  • There will be some additional truck movements along Limeburners Creek Rd and Scotts Rd. 

Kurri Kurri

  • Work on site will commence in early December 2016 and will take approximately 20 weeks to complete.
  • Usual work hours are Monday-Friday 7am to 6pm, and 8am to 1pm Saturday.
  • There will be additional truck movements along Lang Street, Heddon Road and McLeod Road.
  • Community members on Northcote Street and McLeod Road may notice some construction noise periodically.

Morpeth

Work will commence in early 2017.
Further details will be provided.

Raymond Terrace

  • Work will commence in late-February and will take approximately 8 weeks to complete.
  • Usual working hours are Monday-Friday 7am to 6pm, and 8am to 1pm Saturday.
  • There will be some additional trucks accessing the treatment works.
  • Neighbouring properties closes to the treatment works may notice some construction noise from time to time.

Toronto

Work will commence in early 2017.
Further details will be provided.

For More Information

For independent information on biosolids visit: biosolids

To see the NSW EPA's biosolids guidelines visit: guidelines

If you have any other questions please call Hunter Water on tel:1300 657 657.

For after-hours emergencies call 1300 657 000.

Fast Facts

Project Location
Multiple locations
Project Duration
December 2016 - September 2017
Contact
1300 657 657

Email Enquiry