Wastewater Treatment Improvement Projects
Atkins Water is involved in three U.K. projects
delivering 3D design and 2D drawings, in which
Milnthorpe Wastewater Treatment Works formed
part of the £ 10 million Arnside Improvements
Project. The works consisted of a new inlet works,
compact activated sludge plant tanks, selector
tank with combined distribution chamber, sludge
treatment facility, and submersible pumping stations. All had to be constructed on the tight sloping site of an existing works, which was to remain
fully operational throughout construction.
By allowing designers to clearly visualize the
works, 3D design with Bentley AutoPLANT
enabled improved rescoping for safety aspects,
easier identification of risk areas and major constructability issues, identification of areas for cost
savings from realignments, and reduced on-site
delays. HAZOP and access, maintenance, and
lifting reviews on the Arnside project were made
much easier using 3D presentations to enhance
operator visualization of the proposed works.
Designers returned from such reviews with far
fewer actions than on projects where only 2D
design had been employed.
The Stockport design was
enhanced by Atkins' use of
AutoPLANT in routing pipe-work, allowing the firm to prove
line and level while negotiating
a plethora of existing site services. Due to the rural location, it
was essential that the planning
application for the Wigan inlet
works scheme provided the
local authority with realistic
views of the new works as it will
fit in the existing environment.
The 3D images produced in support were essential for success of the application.
The realism of the 3D models provided by Bentley
AutoPLANT has been invaluable in enhancing
operator confidence in the proposed new works.
There was a marked decrease in the number of
actions on designers following design reviews.
This, in turn, has a direct effect on costs due to less
reworking of designs. ;