Specialist tank cleaning for Severn Trent Water

We’re leading specialists in cleaning all kinds of tanks and have recently completed two major cleaning projects for our client Severn Trent Water.

Sewage treatment processes produce large amounts of solid matter known as sludge. This sludge also needs to be treated so that it can be used as fertiliser on agricultural land.

Sludge is loaded into airtight tanks called anaerobic digesters, where it is kept 35°C and mixed with bacteria to break it down. As the bacteria digest the sewage methane (a natural gas) is produced, as well as a fertilizer by-product. Severn Trent Water use the methane to produce heat and electricity.

The digester tanks require cleaning and maintenance to keep them working at optimum levels. In addition to biosolids (sludge) other unwanted materials find their way into the tank – known as rag and grit. MTS remove these materials with powerful vacuum tankers before thoroughly cleaning the tanks.

At Severn Trent Water’s Finham STW (sewage treatment plant) we removed 280 tonnes of grit and 20 tonnes of rag.

At a nearby sump in the Severn Trent system (Baginton) our crews removed 30 tonnes of rag and eight tonnes of grit. You can see the difference in the before and after photos at the top of this page.

Once the digester tank had been cleaned it was put back into service as part of the sewage treatment process.  

Read more about Severn Trent Water's recycling of sewage sludge.

Why choose MTS?

  • 24/7 Reliability 01634 250326

    There is always someone to take your call - Our field service teams operate round the clock every day of the year.
  • Rapid response

    With hub depots throughout the region, we operate a highly flexible scheduling system. We instruct our nearest available tracked field service for the quickest response.
  • Competent first time fix

    Our fully qualified and experienced teams use high performance equipment to fix problems first time with no need for back up resources or second visits. We ensure the optimum solution for your needs.
  • Extensive range of waste solutions

    Our waste management services are available for both individual jobs and more complex packaged solutions. We offer a one-stop shop whatever your requirements and we are continuing to expand our range of services through innovation and investment.
  • Experienced and qualified team

    All management and staff receive full training and are qualified to demanding industry standards in their specialised disciplines. MTS invests in its people and, with low staff turnover, retains a considerable depth of experience to ensure Customers receive the best service. Email our team today at salesteam@mtscleansing.co.uk
  • Full QUENSH management systems

    MTS operates an integrated management system comprising the individual accreditations for ISO 9001 (Quality), 14001 (Environment) and 18001 (Health and Safety). Certified and regularly audited for compliance by BSI Customers are assured of rigorous processes and procedures supporting front line service delivery
  • Trusted service provider

    MTS is entrusted by major water companies across Southern and South East England to work safely to the highest performance standards under stringent environmental and financial control. Rail, airport and highway agencies similarly demand safe and secure services from MTS for the maintenance of critical infrastructure with minimum risk to the travelling public


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