Pakenham Sewage Treatment Plant Upgrade

The Pakenham STP upgrade for South East Water included the following works:

Due to mixing complexities and the particularly aggressive/difficult nature of the incoming sewage, specialised investigation and testing was undertaken including:

The additional design effort put in “up front” worked well, as South East Water was able to ensure project requirements were well documented and the system was easy and straight forward to initially commission.

Cost Savings: All significant upgrade components were analysed in detail over a range of options to determine the most appropriate option.  The tank height and depth were optimised for capital and operational expenditure.  The cost savings to South East Water were in excess of $1.5M.