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Biological Trickling Filters as the Sole Means of Wastewater Treatment – Does It Work?

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Napier City Council (NCC) has been operating a pilot scale Biological Trickling Filter (BTF), preceded only by 1.0mm fine screening and with no pre- or post-clarification, for over three years in order to assess the suitability of this relatively novel configuration for Napier City. The pilot plant was designed robustly so that it could be operated as a full-scale plant would be, and results could be extrapolated to the future performance of a full-scale filter. This paper details the design, construction, and assessment of the performance of the pilot plant under varying operational conditions in the context of the development of the Napier wastewater scheme. Comparison is also made with the full-scale Gisborne District Council BTF plant, running in a similar configuration, which has been in operation since January 2011. NCC now has all the permits needed to construct a full-scale BTF plant without final clarification.

Document Type: Research Article


Publication date: 2012-01-01

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  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

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