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Barton STW, Phosphorus Removal

Project Description

Barton Sewage Treatment Works (STW) is a medium sized trickling filter works. In AMP6, under the Water Framework Directive (WFD), the site had to meet a
new total phosphorus (TP) consent of 0.5 mg/l, and an iron consent of 4 mg/l. To achieve these new consent standards, MMB (UU’s delivery partner) installed a FilterClear® plant.
The decision was based on a comprehensive whole life cost (WLC) assessment of various tertiary solids removal (TSR) plants. The FilterClear® skid was assembled and hydraulically tested off-site at Bluewater Bio’s works, before being transported to site for installation on a flat concrete slab.
The site was commissioned with two-point ferric dosing for P removal, and later the FilterClear® performance demonstrated that compliance can be reliably achieved without the 2nd point dosing, making it possible to simplify the operation and reduce the chemical
dosing cost.

 

Project Name:Barton STW
Client:United Utilities
Capacity:39 L/s
Main Contractor:Mott MacDonald Bentley
Project Scope:Design, supply
& commission

Project Highlights

• Off-site manufacture

• Consent of 0.5 mg/l TP and 4 mg/l Fe

• Rapid installation and commissioning

• No separate flocculation tank needed

Scope of Works

Design, procurement, manufacture, installation and commissioning of Bluewater Bio’s proprietary FilterClear® 3V1840 plant. Fully automated and instrumented tertiary filtration system for total phosphorus removal.

Project Duration

FilterClear® delivered: February 2020
Installation time ~ 2 weeks
Commissioning time ~ 2 weeks
Compliant by: April 2020

Client Contact

Client Organisation: United Utilities

Contact Person: David Ridge

Average Flow2,171 m3/d
Maximum Flow3,346 m3/d (39 l/s)
Design Influent TSS conc.
(incl. allowance for chemical dosing)
35 mg/L (average)
45 mg/L (98%ile)
Effluent TP consent0.5 mg/L (average)
Effluent Fe consent4 mg/L (95%ile)

Barton STW Process Parameters

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