Upgraded wastewater treatment plants provide a reliable supply of recycled water.

An uncertain water future and the need to ensure the quality of existing water resources has led to the current stringent water restrictions and tougher EPA compliance targets. An upgrade of existing equipment, rather than complete replacement can frequently deliver an economical and reliable supply of recycled water whilst achieving EPA targets. The recent upgrade of Hunter Water's Cessnock wastewater treatment plant to tertiary treatment was undertaken by EPCO Australia and included the installation of two primary peripheral drive clarifiers, a secondary peripheral humus clarifier, primary sludge digestion equipment and retrofitting of four biological trickling filter mechanisms (Rotary Distributors). Cessnock wastewater treatment plant now supplies recycled wastewater to a nearby farm and a golf course for irrigation. Recycled wastewater is also used at the plant for general washdown, grit and screening washing and grounds irrigation. Apart from the provision of a reliable supply of recycled wastewater, the upgrade of the plant has provided other benefits including energy savings, odour reduction as well as a reduction in plant operating expenses. EPCO Australia uses a site specific approach to treating wastewater. The focus of the organisation is providing an integrated solution that combines proven equipment with innovative processes. Site evaluation of existing equipment and analysis of the results currently being achieved are the starting points for devising a viable solution. The higher quality effluent requirements for recycled water demand higher levels of operation and maintenance skills. As operators are increasingly being given greater responsibility for the effluent qualities from their plants, part of any upgrade solution must include sufficient training and ongoing support of the plant operators. For professional advice on your wastewater treatment requirements contact Grant Cobbin on (07) 3279 3276, email grantc@epco.com.au, web www.epco.com.au.	Cessnock Wastewater Treatment Plant NSW
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