This website uses cookies primarily for visitor analytics. Certain pages will ask you to fill in contact details to receive additional information. On these pages you have the option of having the site log your details for future visits. Indicating you want the site to remember your details will place a cookie on your device. To view our full cookie policy, please click here. You can also view it at any time by going to our Contact Us page.

Overcoming the issues of transporting dewatered sludge

04 February 2019

The recent Water 2020 report published by the regulator Ofwat encourages sludge trading markets between operators in order to move sludge from a company where it is expensive to treat, to one that is cheaper. Ofwat modelling suggests that if its proposed changes are implemented, around 30 percent of all sludge could move between different water companies.

Wherever it ends up, this sludge will need to be processed. The proposed changes will make it increasingly necessary to transport dewatered sludge over long distances, for example to a thermal processing energy plant. However, a long pipeline does not have to be a barrier to efficient sludge transfer. The SEEPEX Smart Air Injection (patent pending) combines the advantages of two conveying technologies to transport dewatered sludge with high dry solids content over long distances in an energy-efficient manner. Dewatered sludge (or other highly viscous media) is introduced into the pipeline using a progressive cavity pump, forming compacted material which is split into ‘plugs’ and pushed down pipelines of up to 1,000 metres using compressed air. 

The future of sludge transfer 

This alternative to conventional means of handling dewatered sludge has already been installed at a number of plants throughout Europe, and has generated a rapid return on investment. It is an interesting option for the UK’s sludge treatment centres, as not only can the SAI transfer dewatered sludge over distances of up to a 1,000 metres, it is also economical because the total investment and running costs are comparatively low. SAI is being integrated into one of the UK’s largest water companies, as an energy-efficient, high-performance alternative to conventional sludge handling systems. The customised pumping solution is being engineered to fulfill the plant’s specific requirements and to be configured at the location for optimum energy consumption.

Read the full article in the February issue of DPA


Contact Details and Archive...

Print this page | E-mail this page