INNOVATION IN WATER AND WASTEWATER TREATMENT PLANTS
Joint venture partners Galliford Try, Costain, and Atkins have teamed with
United Utilities to deliver new and refurbished water and wastewater treatment
projects throughout northwestern United Kingdom. As part of a five-year, £ 3
billion asset management plan, the alliance developed the £ 13. 6 million Wigan
wastewater treatment plant. The biological aerated flooded filter improved
process flexibility and compliance with tighter standards.
Using MicroStation, Bentley Navigator, and AutoPLANT, Atkins modelers
created each element in various configurations to enable designers to refine
the layout for cost-effective operation and sustainability. The software allowed
designers to quickly and easily review equipment layouts, analyze possible
pipework clashes, and assess lifting and maintenance issues. As a result of
constructability reviews, costs were forecasted to be 15 percent below budget.
MWH Australia Pty Ltd
North Head STP Process and Reliability/Renewals Program
The North Head Sewage Treatment Plant in New South Wales, Australia, needed
a new screenings handling facility, new grit removal system, additional primary
sedimentation tanks, and various reliability and improvement works. As part of
a six-company alliance, M WH was responsible for the design of the $80 million
screenings handling facility, located 60 meters below ground and set within the
North Head cliff face.
The primary challenge was to design a new system that fit within the existing
screenings handling chamber, which was cluttered with pipes, tanks, overhead
cranes, and equipment. M WH used PlantSpace to design and walk through the
model with contractors and the operations and maintenance staff. PlantSpace
also allowed the design team to match a tool to every task, providing the
flexibility to model and modify various options.