Product category:
Filters and Centrifuges
News Release from: Black and Veatch | Subject: GAC process
Edited by the Processingtalk Editorial
Team on 31 August 2004
Black and Veatch add GAC process at
Broken Scar
Black and Veatch Contracting has completed the addition of a new Granular Activated Carbon (GAC) process stage at one of Northumbrian Water's principal water treatment works
Black and Veatch Contracting has completed the addition of a new Granular Activated Carbon (GAC) process stage at one of Northumbrian Water's principal water treatment works, serving the population of Darlington, Stockton, and parts of Middlesborough The existing works at Broken Scar, which has a nominal capacity of 180 MLD (extracting raw water from the river Tees) comprised clarification and filtration stages, with associated chemical dosing, passing into a contact tank with chlorine dosing, from where it is pumped into distribution
This article was originally published on Processingtalk on 11 Feb 2004 at 8.00am (UK)
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The new GAC plant improves the removal of naturally occurring organic compounds, which is a critical part of the process in order to comply with new drinking water legislation introduced in December 2003.
A Conceptual Design Report by sister company Black and Veatch Consulting formed the basis of the design, which comprised a bank of seven filters, with associated airscour and backwash services, GAC loading and removal facilities, and dirty washwater transfer pumping to the raw water reservoir.
A remote relift pumping station transfers the filtered water from the existing rapid gravity filters to the new GAC absorbers, from where the treated water gravitates back to the existing chlorine contact tank.
Throughout the project, Black and Veatch Contracting made extensive use of its 3-D modelling capabilities.
Not only does this provide a dynamic model of what is being designed, detailed general arrangement and isometric drawings are produced.
This ensures that there are no clashes of services within the design and fabrication of pipework can be carried out directly from the isometrics.
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