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Warragul wastewater treatment plant to be de-sludged

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Warragul Wastewater treatment plant sludge lagoon 2018.jpg

Warragul wastewater treatment plant to be de-sludged

One of the storage lagoons at the Warragul wastewater treatment plant is almost full and will be emptied over the next few months.

The lagoon stores semi-solid matter left over from the wastewater treatment process, known as sewage sludge or biosolids.

Between August and November, the sludge will be dredged out of the lagoon, de-watered and then transported to Gippsland Water’s Soil and Organic Recycling Facility for composting.

Around 10,000 cubic meters of sludge will be transported from the treatment plant on Albert Road to Dutson Downs, near Sale, in B-Double trucks. The trucks will enter and exit the treatment plant between 8.00am and 4.00pm on weekdays.

Gippsland Water encourages all drivers on Albert Road to take extra care while the works are being carried out. The trucks will move slowly as they manoeuvre around the tight corner at the entrance to the plant and may take up extra room on the road.

The contractor completing the de-sludging work will take appropriate measures to mitigate the potential for noise and odour throughout the process. The liquids extracted from the sludge will be captured and treated on site.

The lagoon has not been emptied since the current wastewater treatment plant was constructed around 20 years ago. It must be emptied to enable the treatment plant to continue to function. In the normal course of operations the sludge is compressed to squeeze out excess liquid and then composted, but on occasion, the sludge must be stored in the lagoon.

The Warragul wastewater treatment plant is situated at one of the lowest points in Warragul and treats the town’s residential and industrial wastewater.


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Gippsland Water supplies fresh clean drinking water to more than 69,000 customers, and wastewater services to more than 62,000 customers across an area of more than 5,000 square kilometres. It maintains a $1 billion infrastructure network, which includes more than 2,000 kilometres of water mains, 15 water treatment plants, over 1,700 kilometres of sewer mains and 14 wastewater treatment plants.

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