Master drives clean up

MasterDrive variable speed drives, from Siemens, are being used in a £100 million environmental improvement programme at North West Water’s Daveyhulme wastewater treatment works in Manchester. The drives will operate pumps which are being installed to enable further treatment of the water through a Biostyr process which will reduce the amount of ammonia in the […]

MasterDrive variable speed drives, from Siemens, are being used in a £100 million environmental improvement programme at North West Water’s Daveyhulme wastewater treatment works in Manchester.

The drives will operate pumps which are being installed to enable further treatment of the water through a Biostyr process which will reduce the amount of ammonia in the final effluent discharged from the works into the Manchester Ship Canal.

Ammonia reduces oxygen levels in rivers, and its removal will improve water quality in the canal and ultimately in the River Mersey into which it flows.

A special design of input circuit was selected to give minimum power frequency harmonics. MasterDrive also employs the latest radio frequency interference (RFI) mitigation techniques for full EMC compliance.

The plant in Daveyhulme is one of the biggest in Europe, and deals with up to 714 million litres of wastewater a day, meeting the needs of 700,000 consumers.

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