Keywords
Citation
(1999), "Protection for sewage treatment scheme", Anti-Corrosion Methods and Materials, Vol. 46 No. 6. https://doi.org/10.1108/acmm.1999.12846fab.018
Publisher
:Emerald Group Publishing Limited
Copyright © 1999, MCB UP Limited
Protection for sewage treatment scheme
Protection for sewage treatment scheme
Keywords: Denso Water Industry, Sewage, Corrosion prevention, Pipelines
Northumbrian Water is now well into Phase Two of its multi-million pound project to create a cleaner water environment for Sunderland, which includes a dramatic improvement in the water quality of the River Wear. Phase Two includes a £36m massive sewage treatment works now under construction at Hendon, South Sunderland. This will provide primary and secondary sewage treatment for the whole of Sunderland prior to discharge to sea through a new long outfall that itself has cost £10m. When completed, the new sewage works will comply with the requirements of the EU Urban Water Treatment Directive and the British Government.
Consultants for the Hendon project are Montgomery Watson. Contractors are Balfour Beatty Construction Ltd, who have chosen Winn & Coales Denso Profiling Mastic followed by Densoclad 40 Tape for the protection of the joints of all buried flanged pipework for the new sewage plant. The Densoclad 40 Tape is applied to the water industry's P2 specification, which consists of spiral wrapping with a 50 per cent overlap, which is repeated, thus giving four protective layers of Densoclad 40 Tape.
Denso Profiling Mastic and Denso Tape were also used in part of the £15m Phase One of the Northumbrian Water scheme. This was for protection of a new pipeline carrying sewage from the North bank of the Wear into an existing interceptor sewer that feeds into the new Hendon treatment works.