Operations - Wastewater Project

The biological trickling filter system

The wastewater treatment plant to be built as part of the Gisborne Wastewater Project, will use a process known as a biological trickling filter to treat the wastewater.

How does it work?

• This document explains the system, how it works and the process (html)
• This shows the biological trickling filter (BTF) process (27kb pdf)

Here is a glossary of terms