Nov. 25, 2014 -- Wärtsilä Water Systems Ltd of Poole, a provider of products and solutions for offshore facilities used in oil and gas exploration, development and production, has officially selected NOV Mono, a progressing cavity pump manufacturer, to provide its TR Munchers and three Compact C range pumps for a demanding sewage handling operation on a deep-water semi-submersible drilling rig located in the Caspian Sea.
The Mono TR Munchers will be used to macerate the black and grey water produced on the platform, at a capacity of 8.8m3/h. They are designed specifically for the efficient maceration of abrasive sludges and are very effective in capturing irregular shaped objects, thanks to their layback cutter shafts, which are set at an angle to the incoming flow. The shafts operate at different speeds to tear apart any solids, while a cantilever shaft design reduces the number of wearing components by eliminating the need for bottom bearings and seals.
The Muncher also features Mono's EZstrip™ technology, which allows the unit to be maintained in place, thus drastically reducing the maintenance time required and maximizing availability. Any rejected objects are allowed to fall into an easy-access waste trap set below the cutter stacks to prevent damage. Munchers can be supplied to comply with the ATEX Directive 94/9/EC for this type of hazardous area application.
The three Mono Compact C Range progressing cavity pumps, which operate with a Wärtsilä Water Systems Ltd membrane bioreactor, provide a fluid transfer solution that will fit into the compact space of the platform, yet still perform reliably and efficiently at 2-bar pressure. Available in cast iron or stainless steel, and with a choice of rotor and stator materials for different applications, these high-pressure pumps eliminate the need for a series of pumps when pumping over long distances or with high head requirements.
They offer a suction lift capability of over 8 meters, and in addition to applications such as this one, their positive-displacement, progressing-cavity action also makes the C Range pumps ideal for accurate process control and variable speed dosing duties. As with the TR Muncher, the Compact C Range pumps can be supplied to comply with the ATEX Directive 94/9/EC.
About NOV Mono Group
NOV Mono is a division of National Oilwell Varco. It comprises a group of specialist companies offering progressing cavity pumps, artificial lift systems, industrial mixers, heat exchangers, grinders, screens and aftermarket replacement parts and services, across a broad spectrum of industrial sectors including water and wastewater, oil and gas, chemical, pulp and paper, food and beverage and agriculture. The company first began manufacturing progressing cavity pumps in 1935 and industrial mixers in 1952, giving it a heritage of over 75 years. For more information, visit www.mono-pumps.com.