Submerged Aerated Filters ( SAF ) are a well proven technology for wastewater treatment. The Brightwater F.L.I. HSAF^® unique design provides a versatile static bed process, using the BMax^® floating media, which can be configured for biological treatment in aerated mode or as a solids filter in unaerated mode. A version enabling mode switching by the operator is available. All variants utilise periodic media bed cleaning cycles. These units offer the following system advantages:

• High quality effluent
  For example the HSAF^® can achieve <1mg/l ammonia in tertiary aerated mode or <10mg/l suspended solids in filtration mode.
  
  
• Small footprint
  The HSAF^® uses Bmax^® media which offers a high specific surface area (700m²/m³). This combined with an efficient oxygen transfer system, results in a compact and robust treatment process.
  
  
• No sludge buildup
  Automated cleaning cycle periodically removes excess sludge whilst independently maintaining sludge age.
  
  
• Low power usage
  The high efficiency of the process air system ensures a very low air and power requirement.
  
  
• User Friendly
  Proven, simple & robust process requires virtually no maintenance during normal operation.
  
  
• Flexible delivery
  Available as package or bespoke systems. Package plant can be purchased, hired or is available for demonstration units. The standard product is available in a range of four sizes, the largest of which can treat up to 1000 PE in a single unit. Bespoke designs for on-site construction are produced for larger schemes, as an alternative to multiple packaged units.

For further information on Brightwater F.L.I. Limited and our full range of products go to: www.brightwaterfli.com