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Waste Water Application Data No. 159 09/07 Monoflo Solves Pump Blockages At Hafan Derwen Hospital A recently completed project to solve the onerous maintenance problems of the sewage and waste water system at a hospital in Wales, has involved the installation of a Monoflo Series 'A' Muncher in the sewage sump. Previous pump blockages are now a thing of the past as the Muncher has solved this problem by macerating all the heavy solids present in the flow, preventing pump blockages. Muncher: 1 off CA203 Series 'A' Muncher Product: Waste water Capacity: 72m3/h / 317 gpm Drive: 2.2kW / 2.9 hp motor St. David's Hospital, is part of the Pembrokeshire and Derwen NHS Trust. Sewage from the 50 high dependency bed site and a new business unit, recently refurbished on site, drains into the sump under gravity. Medical dressings and hygienic items, that sometimes find there way into the main drains, caused regular blockages and damage to the centrifugal pumps, an expensive and highly inconvenient problem to maintain. Manufacture, supply, installation and commissioning of the Muncher equipment on the sump inlet was therefore managed by Monoflo's experienced Projects & Installations Team, to ensure all solids are macerated on entry to the sewage sump. The Series 'A' Muncher is well proven in its ability to efficiently macerate raw sewage and solids within a flow. Twin shafts are fitted with interleaving cutters and spacers to give 'positive displacement' solids grinding. The differential speed of the cutters, pulls and tears apart fibrous material, while the leading edge and sides of the cutter teeth, crop and shear plastic into small strips. The circumferential 'land' of the cutter crushes friable or brittle waste and the resulting slurry can then easily be pumped to the local Sewage Treatment Works. The NHS Trust also took advantage of Monoflo's packaging capability. As well as manufacturing the Monoflo Muncher, the necessary supporting framework, control panel and cabling was supplied and installed by Monoflo's Projects Team, offering the customer a 'one stop shop' for the design, manufacture and installation of this equipment. Commenting on the current operation of the system, the Maintenance Manager for Pembrokeshire and Derwen NHS Trust said, "Since installation of the new equipment we have experienced no further blockages and this is a vast improvement on the previous situation." The site originally provided Mental Health Inpatient Services to the Counties of Pembrokeshire, Carmarthen and Ceredigion. New purpose built facilities have been built in local communities with a smaller number of specialist care beds remaining on the Hospital site. Following this reprovision of services, a large part of the original hospital site and many of its listed buildings were sold to Carmarthenshire County Council who are currently developing the site as a business park, part of which use the existing sewer facility. v-X^js/^y U k A S _001 Monflo Inc 9700 West Gulf Bank, Houston, Texas, USA T. +1 281 272 7700 E. inquire@monoflo.com www.monoflo.com One Company, Unlimited Solutions © Monoflo January 2009