BIOBEAD ® Biological Aerated Flooded Filter High Quality Treatment Performance Robust Granular Media Enhanced Media Properties Minimal Routine Maintenance Rugged Internal Components Small Footprint A member of the Group of Companies BIOBEAD® Biological Aerated Flooded Filter BIOBEAD® is the UK's leading Biological Aerated Flooded Filter (BAFF) technology. BIOBEAD® incorporates the latest process and engineering advances to provide small footprint plant with low capital and operating costs. An innovative and flexible design approach allows construction of plant serving populations from 500 to 350,000+ and for varying consent levels. High effluent quality is a hallmark of the process that is used for a variety of secondary and tertiary treatment applications. The BIOBEAD® BAFF Process The BIOBEAD® BAFF process combines secondary and final treatment in the same vessel rather than in a separate biological reactor and clarifier. The process is built around buoyant granular plastic media that has been carefully developed by Brightwater over a number of years to provide optimal conditions for biomass colonisation. Settled or finely-screened sewage flows upward through a bed of media which is held in place by a mesh grid. Air is introduced to the sewage flow through a fixed grid. High and stable concentrations of biomass are developed to produce high quality effluent at sewage loading rates between four and ten times that of an activated sludge plant. Removal of excess biomass is easy and cost-effective. A temporary increase in air flow through a lower grid to about eight times the normal rate allows the media to be fluidised which detaches excess biomass quickly and effectively. This process produces low sludge quantities for process variants where sludge age is long. Efficient use of process air means that power consumption for BIOBEAD® is often less than half that of conventional systems, depending on the loading rate. Design and Performance BIOBEAD® plant designs can accommodate carbonaceous removal (C), ammonia removal (N), combined C and N removal and de-nitrification. Therefore, flexible designs that allow plant extension to meet higher effluent standards are readily achievable. BIOBEAD® plants produce consistent, high quality effluent to a level of 5 mg/l BOD, 10 mg/l SS, 0.5 mg/l NH3-N or better. A single stage BIOBEAD® plant provides highly effective carbonaceous treatment for BOD removal which can operate under saline conditions. Typical loading rates are 2.5 - 5.0 kgBOD/m3day. A separate stage with process conditions optimised for nitrifying bacteria can be added for ammonia removal and allows final effluent quality better than 10 mg/l BOD, 10 mg/l SS and ammonia concentrations less than 3 mg/l at loading rates of 0.6 kgNH3-N/m3day. Why opt for the BIOBEAD® BAFF system? Robust reliable Biological Aerated Flooded Filter (BAFF) process for high quality final effluents - 5/10/0.5 mg/l (BOD/SS/NH3-N) or better Applicable for Carbonaceous, Nitrification and Nutrient Removal duties (C, N, C+N and De-Nit) Available as a Package Plant for small populations or custom designed for large municipal schemes Resistant to shock loading including solids overload Operates under saline conditions No objectionable odours or fly nuisance Enhanced media properties with >40 year operational life Requires only 6mm upstream screening Alternatively, these processes can be combined and denitrification can also be included within a single stage to achieve high rates of carbon and nitrogen removal. Additional performance benefits include; the elimination of fly/odour nuisance associated with conventional plant cost savings due to the robust nature of the BIOBEAD® media which does not require regular top-ups to maintain volume and performance unlike processes using mineral media. Full Size and Package Plants BIOBEAD® technology is applied across a wide range of scheme sizes and Brightwater have an extensive reference list from 500 to 350,000 PE. Plants can be supplied in steel tanks or constructed within concrete tanks dependant on site specific requirements. Plant are designed and built in full consultation with the customer and incorporating the customer's design standards as well as our own. There is no limit to the capacity that BIOBEAD® can handle producing high quality final effluents for the most demanding applications. Full service and maintenance agreements are all part of our offering if required. The Company Brightwater FLI LTD designs, supplies and commissions plants for the treatment of sewage, industrial wastes, water and sludges. We have been established since 1990 and have always applied an innovative approach to process and engineering design and development. We are committed to providing the highest quality products and services and operate an accredited Quality Management System to the latest ISO 9001:2000 standards. We are acknowledged leaders in developing new treatment solutions, particularly high efficiency small footprint biological processes. Our Mission Brightwater FLI and ABiC FLI aim to profitably provide innovative, reliable, and cost-effective process plant and services to meet the changing needs of water and wastewater systems operators in the UK and selected overseas markets. Brightwater FLI have expertise in a range of process plant and services, which means that your needs can be confidently met from conception to completion in areas such as:Primary Treatment Secondary Biological Treatment Tertiary Treatment BIOBEAD® BAFF BIOMAX® HSAF/MBBR MEMBRIGHT ® MBR FILTABEAD® Physical/Chemical Treatment Chemical Dosing Systems Feasibility Studies nqa ISO 9001 Registered Sludge Handling and Thickening Sludge Digestion M & E Works Design and Construct Projects Systems Design Pilot Studies Process Development and Modelling Process Maintenance Planned and Emergency Maintenance Cover Total Service Support Brightwater FLI Ltd Brightwater House Avenue One Letchworth, Hertfordshire SG6 2HB Tel: +44 (0)1462 485005 Fax: +44 (0)1462 485003 e-mail: [email protected] www.brightwaterfli.com A member of the FLI Environmental Group of Companies, registered office Brightwater House, Avenue One, Letchworth, Hertfordshire, SG6 2HB UK