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Expand wastewater treatment site capacity

The patented Hybrid-SAF biological process technology employs a submerged moving-bed, fixed-film reactor which treats wastewater with greater energy efficiency than traditional submerged aerated filters (SAFs), in a tighter site footprint whilst meeting environmental compliance. 


  • Commercial sewage
  • Utilities and municipal wastewater 
  • Industrial wastewater and trade effluent
  • Hire, trial or capital purchase  
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Product highlights

  • Enhanced hydraulics for high-rate processing

  • Site footprint 30% smaller than comparable technologies

  • Energy saving timer – pulse air from the blower(s) into the process which cuts the amount of energy used to treat effluent by up to 50%

  • Optimising new or existing vessels of any shape and size

  • Scalable to accommodate growing populations

  • Modular off-site build overcome site restrictions and installation time

  • Containment vessel options - steel, concrete and GRP

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Effluent quality

  • Can achieve <0.4mg/l ammonia discharge

  • Remove phosphorus (P) with additional equipment

  • Can also be configured to provide anoxic conditions for Total ‘N’ 

  • Meets high treatment standards for biochemical oxygen demand (BOD), ammonia, and soluble chemical oxygen demand (COD)

Low maintenance

  • No mechanical or electrical moving parts within the cells

  • No need to desludge the tanks or drain/remove the media during maintenance

  • High-level access not required for internal maintenance

  • Does not require additional equipment or adaptation to scour

  • Cells can be removed, repaired and reinstalled individually without impacting on the process and discharge standard

Design and manufacture 

  •  Patented process technology 

  • Standardised and custom-built options 

  • Modular cells can either operate as individual treatment plants or connected in series to form larger plants.  

  • Can redeploy elsewhere if existing installation becomes redundant before end-of-life

  • Factory fitted control kiosks with blowers, panels and optional telemetry equipment 

  • Variable speed drive blowers can deliver 50-100% of design requirements

  • Above or below ground installations

  • UK manufacture in a quality-controlled environment 

Optimising site footprint

Hybrid-SAF process cells offer the benefit that they can easily retrofit into any onsite existing vessel, regardless of shape or size. This saves on infrastructure costs, minimises disruptions, reduces waste and optimises site footprint. Modular containment vessels come in various materials like GRP (above and below ground), GRP with exoskeleton, steel, stainless steel and concrete.  

Scroll through examples below

Hydraulic design and control

Higher process treatment capacity is achieved within each vessel, reducing the physical footprint, which in turn optimises energy per m³ treated 

The slow-moving media bed and hydraulic design ensure that the suspended solids that normally settle out are carried up and through the process to be captured in the final clarification stage

The hydraulic design ensures even and constant flows of nutrients and oxygen over the high specific surface area media, even during peak and low flow situations, providing ideal conditions for biological growth and treatment 

Option - high level access

High-level access

There is no need for high-level access or lids for internal maintenance, however access can be requested to view the wastewater treatment process.

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Hire & trial options


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Fast and effective trial solutions to prove the technology before investment or hire equipment for emergency or planned refurbishment - bringing your site into compliance.

Case studies and contract wins

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