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.