Dustcheck mobilises dust, collection

Elga Excell at water purification technology

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A mobile dust collector that can be moved from point to point to extract airborne particulate from different workplaces has been introduced by cartridge-fi Itration specialist Dustcheck. Carried on lockable castors, the Dustcheck SFVCM is said to provide a manoeuvrable means of evacuating and filtering air from operations such as grinding, shotblasting, machining, paint spraying and powder filling. The self-contai ned system is powered by an integral fan set to suck dusty air from the work zone through a universal arm. Dirty air is filtered by a single highefficiency cartridge element

cleaned periodically by a reverse-jet air pulse. The unit is made in ten capacities from 3.7 to 18m2 filter area for air volumes from 300 to 1500m3 / hour. The six smaller models are sized so that they can be wheeled through a standard two-metre high doorway. All models are of cylindrical steel construction, to eliminate internal dust traps, and are protected by a powder-coated finish. The optional extras include a control package and explosion-relief facil ities. Dustcheck Ltd, Unit 2, China Street, Fenton, Stake-an- Trent ST4 3NJ, UK. Tel: +44 1782 599454; fax: +441782599478.

Combined filtration &separation for better efficiency

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Dustcheck mobilises dust collection

Elga has introduced a new range of industrial water pur ification plant called the Excell range . The heart of the Excell unit is the ADEPT (Advanced Deion isation by Electr ical Purification Technology) process . Excell has been developed to meet the increasing demands of the pharmaceutical and biotechnology sectors . Most importantly, Excell has been introduced to coincide with the imminent changes to the US Pharmacopoeia 23 monograph for purified water, ensur ing it can be comfortably achieved. The basis of the ADEPT process is a combination of separate layers of cation- and anion-exchange res in separated by cation- or anion-permeable ion selective membranes. Under the influence of a direct electric current, ionic impurities from the feed water are transported through the selective membranes via the resin beads producing a pur ified water stream . The resins are maintained in highly regenerated state , by the electric field , making chemical reactivation unnecessary. The ADEPT process will remove virtually all the inorganic ions found in the feedwater producing purified water with an average resistivity of 15MQ -cm at 25°C, • always greater than 10MQ-cm at 25°C and typically less than 20ppb TOC. Unlike traditional electrodeion isation systems , which consist of a complex array of many narrow cells , the ADEPT process with its wide cell design and discrete layers of cation and anion resin , provides a mechanically and hydraulically simple flow path for the incoming water. As a consequence the cells are less likely to become fouled. In addition , the relatively high volume of resin in the ADEPT cells gives the benefit of a buffer ing effect to changes in feedwater quality. This ability coupled with the fact the ADEPT is a multipass process , incorporating a second polishing stage for the already purified water , ensures consistently high quality water and gives added process security. Elga Group Services Ltd , High Street Lane End, High Wycombe Bucks HP14 3JH , UK. Tel: + 44 1494 887700; fax: +441494881007.

Disposable oil filters could easily become obsolete with the introduction of a completely new system for lubrication oil cleaning from Alfa Laval. The new product, developed in co-operation with Cummins Engine Company, combines the benefits of filtration and separation in a single unit. It represents a revolution in engine oil cleaning technology and, according to Colin Black, Senior Technical Advisor for Cummins, "has been quite outstanding with demonstrated superiority". The new product, called the Alfa Laval Combined Cleaning Unit (AL-CCU), incorporates a Moatti self-

cleaning filter and a highly efficient Alfa Laval bypassflow disc stack centrifuge, within a compact housing. The filter, with its multi-sectored, high performance, stainless steel filtering mesh accepts the full flow of the engine oil and removes 8590% of all particles down to 20 microns. The filter self cleans every 90 seconds by backflushing. The separator operates in a bypass loop and treats the fi Iter's continuously backflushed oil, removing particles down to 2 microns or less. Alta Laval MOA TTl, 21 Le Chene Sorcier, 78340 Les Clayes so us Bois, France. Tel: +33 1 30 81 81 81; fax: + 33 30 81 81 70.