Leading wastewater treatment solution provider KEE Process has specified six of the largest Flender gearboxes it has ever ordered from Siemens Automation & Drives, for a prestigious project in Wales.
Crynant, a small village in the Neath Valley, is being supplied with six KEE Process rotating biological contactors (RBCs), which are modular treatment plants for medium and large-scale applications, as part of a £3.3 million investment scheme by Dwr Cymru Welsh Water to upgrade its treatment processes. The 4.5 metre, 6-bank RBCs are KEE’s largest UK application and have been performing well since their switch-on in December 2007.
Imtech Process was responsible for the installation of the KEE units, which incorporated Flender FZG gear units (size H3DH11), combined with Motox units (size KAF108K4-1LA9) and high-efficiency Siemens eff1 motors (size 113-4KA). This combination drive design was selected to achieve high ratios for low speed operation (around 1 rpm output speed, with 4kw power and 63,500Nm gearbox rating).
KEE Process contracts engineer Alastair McInnes said: “Due to being driven by direct coupled geared motors, the units are virtually silent in operation. We selected the Flender-Siemens combination due to its reliability, low maintenance requirements, high torque and ongoing low power demands.”
Dwr Cymru Welsh Water is investing £1.2 billion in its water and sewerage network between 2005 and 2010.
More information on Flender gear units and Siemens motors from anna.grimshaw@siemens.com or visit www.siemens.co.uk/gearunits The KEE Process website is at www.keeprocess.com
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