Lyttleton Harbour disposal options - From fragmentation to efficiency

Christchurch City Council is developing a long-term strategy for the management of wastewater in the Lyttelton Harbour Basin, especially 3 communities, i) Lyttelton ii) Governors Bay and iii) Diamond Harbour. Out of a long list of 9 options for treatment and disposal, and 3 were nominated by the to be carried forward. EcoEng and Harrison Grierson undertook the preliminary design and costing of these options. The three options were quite unique in terms of disposal, which also provided a good comparison of the benefits and downsides.