First clean in a decade for a STW tank

MTS were engaged to empty and clean out the contact stabilisation tank at Woolhampton STW for Thames Water. The tank was causing issues for the site process as it had not be cleaned for over a decade.

The clean was a complex and challenging task due to a large build-up of grit and rag and, in addition, Thames Water could not have the tank off line for any length of time.

The tank was actually a tank within a tank and required both sections to be emptied at the same time to prevent damage. The outer tank was also divided into three sections which made entry and cleaning and tricky and hazardous task.

The MTS crews completed the work to a very high standard well within the time limit set out in the quote and to the complete satisfaction of Thames Water.

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