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Limavady, Ireland -- Rich in history and legend, Limavady Borough, in the heart of North Ireland, flourishes in a rich green landscape as the result of 200 days of rainfall annually. This small city is dedicated to keeping the environment clean and green, and provides services that protect residents’ health.
In 2004, DRD Water Service announced plans to upgrade the Limavady Wastewater Treatment Works, which was part of a 28 million dollar capital works program.
The Regional Development Minister, Shaun Woodward, said: "Significant investment is required to upgrade water and wastewater infrastructure in Northern Ireland to protect public health, ensure cleaner beaches, safeguard the environment and respond to increasing demand.”
As part of the upgrade, Northern Ireland Water, the local water authority, found it necessary to search for equipment that would hold up to the tough task of handling the remarkable amount of screenings brought in by the high quantity rainwater flowing into the combined sewer system. In particular, problems often occurred at the headworks portion of the treatment plants due to the first flush of these heavy rainstorms.
Northern Ireland knew that only a very heavy duty screen at the front of a treatment facility could hold up to the beating, and capture the rubbish flowing in from the deluge without jamming. NIW also had to abide by UK screenings capture requirements. Northern Ireland officials agreed that Headworks Mahr® Bar Screen was up to the task.
The Limavady Wastewater Treatment Plant was part of the upgrade plan, replacing old, non-working screens. After thorough research, NIW was so impressed with the robust, durable construction of the Headworks’ screens and their ability to withstand coarse screen abuse while delivering fine screen results, that Headworks was accepted for the project. Williams Industrial Services, the contractor awarded the project, installed two 4mm Mahr Bar Screens into a channel depth of 1.75m by 1m wide. To the bar screens, they attached a Transporter and Compactor for conveying, washing, compacting.
The installation of the screens was successful and the client is very pleased that they have eliminated the need for a two-stage screening system. These Mahr Bar screens hold up to debris like a coarse screen with peak flows of 480 L/s.
Paul Davison, Project Sponsor at NIW, remarked “Since their installation, the screens have gone through several storm events without ever jamming. The volume of screenings captured at Limavady is significantly greater than was previously removed. Additionally, the headloss is considerably less than anticipated. So far, the screens’ performance is very good.”
Since the installation of Limavady in late 2008, NIW has accepted Headworks Mahr Bar Screen for two additional projects.
Few facilities in the world are in an environment that receives 40 to 50 inches of rain each year, but even with the torrents of water and heavy debris that results from the “first flush” of these heavy rainstorms, Headworks provides equipment proven to last for decades with very little maintenance.
Whether you face extreme conditions or not, visit:
http://www.headworksusa.com/
© Copyright 1998 - 2012 Water and Wastewater.com
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