| 3 REGIONAL DEVELOPMENT JUDDS Karen Phelps Biosolid composting plant a first in NZ The $10 million composting biosolid facility in Gisborne can process a range of waste material including wood slash. JUDDS is the first company in New Zealand to compost biosolids with a newly opened state of the art $10m facility in Gisborne. The facility centres around four 6m x 6m x 24m long in-vessel composting tunnels based on a static aerated pile. The biosolids are deposited in the tunnels and sealed then processed via a computerised system controlled. Leachate is controlled and re-used in the compost mixing process to add moisture. Odour is likewise controlled and put through a biofilter to clean it. The resulting compost can then be utilised in a variety of ways. JUDDS general manager Blair Judd says overseas this includes putting in on agricultural land, parks and reserves and as erosion control. The project came about when Gisborne District Council was seeking a composting solution for the biosolids from its new wastewater treatment plant to help meet regulation due to take effect by 2030 when such waste can no longer head to landfill due to the methane emission generated to help it meet its climate change goals. Blair travelled overseas in July 2022 to look at how the USA was composting biosolids and came up with a solution to suit the council. The resulting project was assisted by funding from Kanoa, the Regional Economic Development & Investment Unit within the Ministry of Business, Innovation and Employment. The JUDDS facility also includes an intake shed with odour control under negative pressure and equipment such as a windrow turner, loaders, shredder and chipper. The facility can process a variety of waste materials including animal, food, As an example it is currently chipping logs and wood slash that ended up on the beaches after Cyclone Gabrielle to become part of a compost blend. Blair designed and project managed the modular facility and it was built by sister company Siteworx Civil. Capable of processing 60,000 tonnes of material per year when run in conjunction with the windrow facility, currently slightly less than 30,000 tonnes is being to page 4 Our structural engineering consultancy was founded in Hawkes Bay, New Zealand, with a focus on providing high-quality design services for residential, commercial, and industrial projects. Proudly supporting Judds Limited 06 601 5588 www.eqse.nz 230 Gloucester St, Taradale, Napier ○ SOLUTIONS FOCUSSED ○ PRAGMATIC ADVICE ○ OFFICES IN WANAKA & GISBORNE CONGRATULATIONS TO JUDDS LIMITED Contact us at www.insightgis.co.nz PROUDLY SUPPORTING SUSTAINABLE & INNOVATIVE RESOURCE REUSE Proud to have designed, project managed & built JUDDS’ new composting facility. www.siteworxcivil.co.nz | 06 868 9331
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