Articles & Case Studies

Turret Waste Water Treatment Works

Posted: Tuesday 13th January 2009

Faber Maunsell | AECOM is working with Scottish Water Solutions on the Turret Water Treatment Works. This £24M flagship project will upgrade the treatment works to address quality failures and improve the control of the disinfection process.

Following completion, the product from Loch Turret works will fully comply with the Water Supply (Water Quality Scotland) Regulations and the volume of drinking water will be increased to 85 megalitres per day.

Graham Smith, Senior Engineer in the Glasgow office said: “Faber Maunsell were invited by Scottish Water Solutions to consider the needs of the project and to identify any areas that could potentially accelerate the delivery programme.

“We developed a two stage design programme that would allow the Scottish Water milestones to be met, whilst also progressing the detailed design to meet construction requirements”.

The Faber Maunsell team were chosen because of their ability to provide an integrated approach to the design. We provided process engineering, mechanical and electrical engineering and civil and structural design services.

The main challenge has been the timescale to meet the legislative deadline for the upgrade work. Scottish Water are required to have the WTW commissioned and operating by the end of March 2010, so this has driven the programme. It was essential that the construction commenced on site mid 2008, so the main elements on the project had to be designed in advance of this to allow the procurement process to progress while the civil work started.

At an early stage, packages of work were identified that would need to be developed in advance of the main design deliverables. One example is the new hydro turbine, which was investigated, specified and ordered early in 2008 to allow for the 48 week manufacture and delivery period.

Although the design and construction programmes were developed in conjunction with each other, the number of 3rd party suppliers involved in the project meant that information required to progress the design was not always readily available. To help overcome this without extending the programme, the Design Teams experience of work of this nature has been invaluable and this has helped reduce the risk involved with developing the design on this basis.

The Water Treatment Works are scheduled to be operational by the end of 2009
Faber Maunsell has been working with Scottish Water since their inception and are currently one of their top 3 designers.

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