Palmerston North City Council's waste water treatment plant
Each year some 12.9 billion litres of wastewater from the city is collected by a network of pipes and delivered to the main treatment plant in Totara Road. Here the sludge is removed before the resulting effluent is passed through lagoons for further treatment and then discharged to the Manawatu river.
The present treatment plant has the capacity to serve a population of 75,000 persons.
Digester Upgrade (2009 – 2012) - NZ Consultant Spiire lead a program of services that allowed the PNCC to quadruple the biogas output of the PNCC WWTP digesters by upgrading of the mixing system, recuperative sludge thickening and co-digestion of primary processing industry wastewater treatment residues, grease trap waste and municipal sewage sludge.