Water & Wastewater Treatment

DESIGNED TO MEET YOUR NEEDS... • Low operating cost • Reduced capital cost wastewater treatment • Simple maintenance • Built off-site • Proven process Call: 01249 705 350 or visit: www.ovivowater.co.uk/rbc © 2014 GLV Inc. All rights reserved. ROTATING BIOLOGICAL CONTACTORS RBC'S ARE AGAIN BECOMING A FAVOURABLE METHOD OF WASTEWATER TREATMENT. Compared to some treatment systems, RBC's can offer a very cost-effective solution – and with their low power motors, they are also environmentally friendly. Used to remove soluble, biodegradable, organic materials from domestic and industrial wastewater, RBC's can achieve a high quality final effluent that meets Environment Agency discharge consents. In the 1980's and early 1990's, it is fair to say that low cost, poorly designed RBC's gave the process a bad name and catastrophic failures were common place and very expensive to repair. During the 1990's Ovivo (formerly Copa Ltd and later Eimco Water Technologies) joined forces with Severn Trent Water and Cranfield University to gain a thorough understanding of the RBC process and to 'design out' the reasons for the mechanical failures - documented as one of the largest mechanical surveys of operational RBC units ever undertaken. The resulting new generation RBC design has been in use now for well over 20 years. With several hundred of these improved standard RBC's in operation we are quietly confident that we have successfully allayed industry fears of premature RBC failure. To find new ways of manufacturing RBC units more cost-effectively and to make our offers as attractive as possible, we have systematically investigated every component of our original design - right down to the very nuts and bolts. As a result we are now far more confident in our ability to bid competitively on projects. In addition to producing an attractively priced RBC, our series of significant design improvements mean that we can now meet additional customer needs that directly relate to cost savings - such as delivering a fully off-site assembled unit, which saves many hours of installation. Past concerns about RBC's are now just that – a thing of the past. At Ovivo we're proud to have brought about a far better understanding of what makes a modern day RBC a perfectly viable and reliable option for wastewater treatment By Nathan Longhurst Ovivo Group Product Manager Population Dry weather flow Max daily flow Total daily BOD No. of stages Rotor dia. Media area Motor rating No m 3 /day m 3 /day kg No m m 2 kW RBC300 RBC400 RBC500 RBC600 RBC700 RBC800 300 400 500 600 700 800 54 72 90 108 126 144 324 432 540 648 756 864 18 24 30 36 42 48 4 4 4 4 4 5 2.6 3.0 3.6 3.6 3.6 3.6 3126 4240 5252 6374 7345 8403 1.10 1.10 1.50 1.50 1.50 1.50 STANDARD RANGE Population based on 180 l/hd/day and 60 grms BOD/hd/day for a 95%ile 20mg/l BOD, 30mg/l SS consent, assuming 30% BOD reduction in primary settlement Used to remove soluble, biodegradable, organic materials from domestic and industrial wastewater, RBC's can achieve a high quality final effluent that meets Environment Agency discharge consents. In the 1980's and early 1990's, it is fair to say that low ADVERTISEMENT FEATURE

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