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Thames Water, Reading

The Thames Water Reading sewage treatment works has recently reported their highest ever CHP production levels following the installation of an S:MAX Sludge Screen from CDEnviro. Following the success of this installation, Thames’ confidence in CDEnviro saw them accepted onto the new sludge screening framework.

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Opened in 2005, the sewage treatment works on Reading’s Island Road STW is one of the most technically advanced facilities in the UK. The plant was designed not only to meet the technical demands of effluent and sludge quality, but also to address a wide spectrum of environmental issues.

Before the installation of the CDEnviro system only certain tankers were able to discharge at the TWUL Reading STW, which was ultimately affecting the levels of CHP which could be produced. Following the installation of the S:MAX unit at the Reading site, the system can accept a much wider range of material, effectively remove rag and quickly discharge it from the system.

The TWUL Reading sewage treatment works receives tankered sludge from a number of surrounding satellite sites; as a central processing centre typically up to 30 tankers per day discharge at the site which has also been known to accept sludge from tankers up to 50 miles away due to its capacity.
Once discharged into the system the sludge goes through the anaerobic digesters under a controlled process to capture methane for energy production.

The S:MAX unit has brought improvements and greater efficiency to the TWUL Reading STW screening operation, Thames Water have reported a high retention rate with very little ‘good sludge carry over to screenings’ due to a sludge washing spray bar which washes incoming material breaking down clumped sludge or sludge that is stuck together.

Not only can the system accept a wider range of material, i.e. heavy bound sludge and sludge crust, but the S:MAX unit also allows tankers to discharge directly into the system without the need for a reception tank. The incoming material is washed to liberate clumped sludge or sludge that is stuck together and won’t pass through the screening media.

Since the installation of the S:MAX the TWUL Reading STW has seen a substantial increases in the CHP production levels due to the increased levels of production they can achieve with the sludge screen.

Modifications were made to the S:MAX to suit the requirements of Thames Water including the addition of an odour enclosure and the compactor orientation which was changed to allow the unit to discharge outside of the building. The odour enclosure proved to be necessary for the safe operation and placement of the system inside the existing building.

CDEnviro design and manufacture a range of waste reduction and recycling equipment for application in the sewage, waste water, waste management and utility industries. These high performance, high efficiency materials recovery and recycling systems have been developed to substantially reduce waste to landfill and maximise the production of commercial grade products from a number of waste streams.
Throughout our history we have consistently brought new and innovative waste handling and recycling systems to all the industry sectors that we work in. We will continue to develop these systems to ensure the technology we offer enables our customers to maximize efficiencies and minimise costs.

Throughout our history we have consistently brought new and innovative waste handling and recycling systems to all the industry sectors that we work in. We will continue to develop these systems to ensure the technology we offer enables our customers to maximize efficiencies and minimise costs.

For further information visit cdenviro.com or contact;

CDEnviro Ltd
T: +44 28 8676 7900