Wastewater Treatment Plant Chemical Storage – Pukete


Hamilton City Council



$1 Million

Project type:

Customer Need

Hamilton city is growing, with greater demand for both water and wastewater infrastructure. The Pukete Wastewater Treatment Plant (WWTP) is the only wastewater treatment facility for the city and as such required an upgrade to meet the increasing demand for wastewater treatment.

What We Did

As a sub-contractor under Downer, FILTEC was involved in the supply and installation of 2 chemical delivery, storage and transfer systems. In addition, new chemical dosing systems were supplied and installed to treat wastewater in the existing 4 bioreactors, a new bioreactor No.5 and sedimentation tank.

The new automated chemical storage facility and dosing system supplies both acetic acid and alum sulphate. FILTEC supplied and installed the transfer pipework and valving allowing deliveries to be pumped directly from road tankers into the 25,000l storage tanks (6 off). Moreover, 2 large peristaltic pumps were installed to transfer the chemicals across to new day tanks (2 off) situated on the new electrical control building adjacent to bioreactor No.5.

The new chemical dosing system consists of 3 bioreactor dosing cubicles, 2 transfer flowmeter cubicles, 1 sedimentation tank dosing cubicle, 3 flowmeter dosing point cubicles and transfer piping, dosing lines, instrumentation, pumps and drainage systems to allow both acetic acid and alum sulphate to be dosed into the new bioreactor No.5 in 3 different locations.

The Results

The upgrade is a futureproof solution for Hamilton city’s wastewater treatment needs.

Once completed, it will provide for the quality, capacity and security of Hamilton’s wastewater treatment for the next 10 years.