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Ōpononi Plant Upgrade

opononi-wwtp-3

Project details

The Council plans to upgrade the Ōpononi wastewater treatment plant to improve the quality of the treated wastewater that is discharged to the Harbour.

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 Ōpononi’s wastewater to a higher standard. You can read the upgrade report here.

The preferred upgrade option for Ōpononi includes:

Task


Purpose

Install baffle curtainsBaffle curtains will increase retention time within the ponds and reduce short-circuiting.
Install a chemically assisted solids removal unit

This allows for residual algae from the wetland effluent to be removed before the treated wastewater is discharged.

Algae removed from the effluent is returned to the inlet of the WWTP.

Install a UV disinfection unitUV units remove pathogens from the wastewater.
Install a submerged aerated filter unitThis is used to remove nitrogen from the wastewater.

Project documents

Location

Baker Road, Omapere 0473  View Map

Last updated: 02 Apr 2024 4:34pm