The Shortland Wastewater Treatment Works serves the communities of Sandgate, Shortland, Birmingham Gardens, Maryland, Fletcher and Minmi.
It has the capacity to treat 14.1 megalitres per day but currently processes around 9.0 megalitres. The plant can also handle wastewater from a population of up to 32,000 people.
The Shortland Wastewater Treatment Works also receives sewage from the University of Newcastle and Saint Joseph's Nursing Home at Sandgate and collects industrial sewage from Kooragang Island, Steel River and Sandgate Industrial areas.
The Shortland Wastewater Treatment Works provides secondary treatment of the wastewater using the following process:
- inlet works, including fine screening and grit removal
- secondary treatment through two Intermittently Decanted Aeration Lagoon (IDAL) units
- treated effluent is chlorinated for pathogen removal and then dechlorinated before discharge to the environment.
Waste activated sludge is aerobic digested and then dewatered onsite using belt filter presses to produce biosolids.
Recycling and reuse
All biosolids produced at Shortland Wastewater Treatment Works are beneficially used for mine site rehabilitation and agricultural pasture improvement projects.
The plant also supplies around nine megalitres of effluent per day to the Mayfield West Advanced Water Treatment Plant for the Kooragang Island Water Recycling Scheme.