Upgrading a direct filtration treatment plant with UV
Annual Conference
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The township of Picton is served by two water treatment plants – Essons Valley and Speeds Road. The Essons Valley plant is a direct filtration plant constructed in 1994, and draws from a surface water dam source. The paper describes the upgrading of this plant with the addition of UV disinfection to meet the Drinking Water Standards for New Zealand, as well as a range of other upgrading measures to improve the plant’s operability, serviceability and reliability. The paper illustrates the range of issues that need to be considered when upgrading small surface water treatment plants.