Associated Engineering (AE) was retained to provide conceptual design review, permitting assistance, pre-design, detail design, procurement assistance and engineering services during construction for the upgrade to the E.L. Smith Water Treatment Plant, in order to increase the plant capacity from 240 ML/d to 400 ML/d.
Due to a tight required timeline, AE created coordinated design teams working in parallel to develop and deliver the designs. Some of the project components were delivered using traditional design-bid-build, while others were fast-tracked and employed a construction management approach. To accelerate the design, AE made extensive use of computational fluid dynamics analyses, and 3-D models of most of the major components. Permitting was complex and required a team to liaise with the various authorities and regulators to ensure that their needs were addressed.
The scope of the $140 Million project includes:
- 1000 ML/d river intake
- 400 ML/d low lift pump station (expandable to 800 ML/d) with new traveling screens and a 200 ML/d fish return system
- Rapid mix facility
- 1800 mm diameter raw water main twinning
- Upgrades to the clarifiers
- New channels and valves to increase the plant hydraulic capacity
- Filter building expansion consisting of six new filters designed for deep-bed conversion
- Addition of a 140 ML/d UV reactor
- Additional powdered activated carbon, caustic soda, fluoride and ammonia storage and feed systems
- New reservoir valving
- New on-site sodium hypochlorite generation system
- Various staff facility upgrades including a new maintenance shop
- Twinned process waste drains and clarifier sludge drains
- New 1500 mm diameter high pressure water transmission main and river crossing