Water Utilities – PACL Dosing System

Water Utilities – PACL Dosing System

Project Title | SBR Retrofit Contract – Hybrid 1 Chemical Dosing

Client | Purchaser – Irish Water

Main Contractor – a consortium called “FaCT3” comprising Farrans, Celtic Anglian Water, TES

WES are a Domestic specialist supplier to the FaCT3 Consortium

Project Value | €350,000 (approx. £305K)

Chemical | Polyaluminium Chloride (PACL) at 18% w/w

Duration | Order received: November 2020

Delivery to site: June 2021

Commissioning: August 2021

Our Services

Design, procure, manufacture, factory test, deliver/offload and on-site commissioning of:

1 PACL dosing system comprising GRP kiosk fitted with process plant, control panel and all services, 2 dosing cabinets with d/d/st pumps,

4 point-of-application delivery cabinets.

The site mechanical & electrical installation has been carried out by the main contractor.


The Ringsend site [Dublin] is undergoing enhancements to increase the treatment capacity and standard of the existing secondary stage sequence batch reactors [SBR’s] to promote biological removal of phosphorous.

There is an existing integrated chemical storage/dosing package for polyaluminium chloride chemical [PACL at 18% w/w] that will continue to serve 2 of the 6 existing treatment batch streams, and our bespoke design & build package plant will provide a tripling of the existing PACL dosing system, serving 4 treatment streams.  The WES plant is a fully offsite built and tested single lift package dosing system, for which a comprehensive remote customer factory acceptance test [cFAT] was undertaken via Teams call.  Following installation by the main contractor, WES will attend site to commission the dosing system into process operation later this summer.