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Treatment Devices

Case studies or journal articles reporting on projects where specific devices have been employed have been gathered here.  The case studies tend to highlight the importance of an accurate assessment of the requirements of a specific catchment in the choice of any device or combination of devices, and the direct relationship between activity within a catchment and the efficiency of any treatment solution.

Hynds have provided case studies for the employment of the Up-flo filter at Orakei Marina and Westfield retail and commercial development in Auckland.  Stormwater360 has supplied several case studies for the use of siphonic radial filter cartridges in StormFilter units.  In addition to stand-alone use in Huia Lane sub-division in Rodney District and Carmel Place development in Waitakere City, these units have also been employed as part of a treatment train in the Sylvia Park re-development and the Albany Bus Station, used with polyester mesh screen Enviropod catchpit inserts fitted upstream of the filter units.  The Albany Bus Station also incorporated a wetland downstream from the filters.

Maccaferri has supplied a case study of the award-winning low impact combination of a VersiTank and Megaflo ducting in rain gardens in urban redevelopment in Addington, Christchurch. 

Research by Maunsell AECOM for Metrowater has developed a better means of calculating the required capacity for catchpits.

The final results of NIWA's research into the contaminant loads in road runoff and the effectiveness of ponds and swales as treatment measures has also been included here. These are the final figures for the research presented at the Stormwater09 session.

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