Lismore leads the way with new state-of-the-art landfill
Lismore City Council recently constructed a state-of-the-art landfill cell, which features a new leachate collection system and complex layers of lining to ensure any leachate is kept out of the groundwater, protecting the natural environment.
One of the stand-out features of this new landfill cell is its geosynthetic clay lining – a first in NSW. Lismore is a pilot site for the new method, which looks set to become widely used as a best-practice model in the future.
The geosynthetic lining comprises a fabric impregnated with bentonite clay, which has several benefits compared to the thick layer of compacted clay that is traditionally used. The geosynthetic lining provides around 30cm more space across the face of the landfill, which is around the size of two football fields, giving us additional space and extending the life of the landfill. Once the geosynthetic liner is laid, another plastic liner is placed on top, sealing the waste to prevent toxins leaching into the environment.
The old landfill cell, which was closed in September 2015, will be capped using a phytocap system, which essentially means capping with diverse native vegetation rather than the old method of clay and gravel. This will create more koala habitat and link to the 1.3-hectare phytocap site planted in 2013, which was the first licensed phytocapping site in NSW.
The new landfill cell will give Lismore City Council capacity for the next 10 years based on the current amount of waste going to landfill.
The more you recycle, the longer it will last!