Kaikohe Plant upgrade
Project details
The Council proposes to upgrade Kaikohe's wastewater treatment plant to improve the quality of the treated wastewater that is discharged to the Wairoro stream.
The Regional Plan for Northland provides guidance and rules about the quality of the wastewater that can be discharged. When the current resource consent is renewed the discharge to water will need to meet strict quality standards.
Council’s engineers and planners explored options to upgrade the existing plant so that it can treat Kaikohe’s wastewater to a higher standard. Budget for the preferred upgrade option has been included in the Long Term Plan 2021-31.
The preferred upgrade option uses the existing anaerobic and oxidation ponds. The treatment process at the plant will be upgraded to include new inlet screening and grit removal, IDAL, filtration, UV disinfection, and a sludge dewatering system.
An IDAL is a pond based activated sludge process where wastewater is decanted in batches, instead of continuously. The IDAL system will be constructed in the oxidation pond.
Project documents
Location
Cumber road, Kaikohe 0474 View Map