Tauranga WWTP's - The 10 Year journey of Asset Optimisation
Annual Conference
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In order to provide additional treatment capacity to meet projected population increases and improved treatment capability to meet new effluent discharge consent requirements, the Tauranga City Council (TCC) needed to implement a development programme for their two wastewater treatment plants namely Chapel Street and Te Maunga.
MWH carried out feasibility studies and prepared Design Statements for development programmes at the two Wastewater Treatment Plants (WWTPs) and project managed and designed over twenty project work packages over a period of 13 years, to implement the agreed development programme. The implementation works were staged to match increasing capacity demands and the coming into effect of new consent discharge conditions, to enable project implementation to fit within “live” plant operational constraints, to match funding availability, and to allow the progressive refinement of follow-on designs based on the commissioning outcomes from project packages which had been implemented at an earlier stage of the programme.
The paper traverses the journey from inception to completion and highlights some of the challenges and smart solutions implemented to provide redundancy and treatment security and defer capital investment by maximising the use and performance of existing assets at the two operational wastewater treatment plants.