Proceedings

Meeting stringent phosphorus standards – FilterClear design and commissioning experiences in United Utilities: PRESENTATION ONLY

Huo, C.1, Rostron, W.2, Narroway, Y.3, Ridge, D.3 and Hodge, L.2, 1Bluewater Bio, UK, 2MMB, UK, 3United Utilities, UK

(free)

Since the success of meeting the total phosphorus (TP) limit at Codsall STW in Severn Trent, Bluewater Bio’s FilterClear has been widely accepted as a low whole life cost (WLC) solution to achieve very stringent TP standards. FilterClear has demonstrated that not only it can reliably achieve the consent requirements but also the chemical consumption is much lower than expected. More FilterClear plants have been installed in Severn Trent, United Utilities and Welsh Water, some of the sites have very low TP limit of 0.25 mg/l. These sites are in various stage of installation and commissioning.

This presentation will provide some detailed performance data, including phosphorus removal, chemical dosing ratio.  Some design and operational aspects, including backwash control and return, dosing point selection will also be discussed here.

 

Key words:

Phosphorus removal, Ferric dosing, dosing point and ratio, filter backwash.

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