S:Max demonstration leads to success for Wessex Water

Wessex Water has increased its sludge handling capacity at Trowbridge STW, through reducing downtime of existing capital assets, following the installation of an S:Max sludge screen from CDEnviro.

As part of CDEnviro's S:Max demonstration programme launched in 2011, Wessex Water allowed the installation of the S:Max at their site in Trowbridge to establish how the system would work with their sludge processing strategy.

Before the installation of the CDEnviro system operational difficulties with the existing sludge reception and screening plant meant that sludge imports were often restricted, this in turn led to increased transport costs and general inefficiencies with tanker drivers travelling to sites further away.

The S:Max sludge screen, installed by CDEnviro, accepts waste from two streams; the imported waste from tankers collected from the surrounding areas, and indigenous sludges generated by the sewage treatment works. Once screened, the sludge will, following a future capital scheme, go through anaerobic digesters under a controlled process to capture methane for energy production.

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