Treatment solutions firm Bluewater Bio says its high rate multi-media filtration technology, FilterClear, has been selected for three further plants by three different water companies in order to achieve compliance with tighter phosphorus consents. BwB will provide in each case a fully automated Tertiary Solids Removal (TSR) plant.
The Company will work with Severn Trent Water’s capital delivery framework partner, Costain/Stantec (CiM6), in providing a TSR plant at Ledbury WwTW, Herefordshire. BwB will also deliver TSR plants at Barton WwTW and Dyserth WwTW, respectively. Mott MacDonald Bentley (“MMB”) are in both cases the nominated Tier 1 delivery partner.
Fergus Rooksby, Commercial Director of Bluewater Bio said the contracts were “testament to FilterClear’s growing reputation” in respect of chemical dosing for low phosphate concentration consents.” He added: “We are seeing that the technology is not only effective in meeting P consents below 0.5 mg/l TP, but also performs well on works that have a variable suspended solids load profile.”
Ledbury WwTW is a medium sized activated sludge works, consisting of two crude oxidation ditches and operating in enhanced biological P removal (EBPR) mode, serving the market town of Ledbury, Herefordshire. The site currently has a population equivalent of 14,500 which is expected to increase to 20,000 at a 2028 design horizon.
The works also receives a significant industrial load. The company will provide a fully automated 4v2800 tertiary solids removal plant, capable of treating up to 132 L/s of flow, to enable the site to meet the new consent of 0.24 mg/l for phosphorus. The project is the largest UK FilterClear installation to date.
Barton WwTW, located north of Preston, is a trickling filter works with SAF and NTF stages. It serves a population equivalent of 6,600, expected to rise to 8,700 in the near future. BwB will provide a 3v1840 TSR plant capable of treating up to 44 L/s that once completed will enable United Utilities to meet the new TP consent of 0.5 mg/l. Delivery date is scheduled for July this year with estimated completion in October 2019.
The project at Dyserth WwTW, a trickling filter site in north Wales, is one of five P removal schemes awarded by Welsh Water to assess viable solutions to address the tightening of P consents. These advance projects, prior to their larger P removal programme in AMP7, will give DCWW and their Tier 1 partners valuable delivery and operational experience and guide their decision making progress in AMP7.
