PNCC BIOGAS TO ENERGY PROJECT

This paper describes the process that Palmerston North City Council followed in transforming low rate digesters into high rate digesters and thereby enabling sufficient biogas generation to run a new 716kW Electrical generator. The paper describes the process for determining the requirements of the project, how the cost benefit was derived the generator selection methodology and how the improvements to digester performance were identified and implemented. The performance of the digesters post upgrade are outlined and the process by which the new feed stocks were introduced is discussed.