Significantly reducing the high cost of rebuilding infrastructure

Companies have multiple challenges in managing their wastewater treatment operations in the coming years.  Capacity will need to expand as population grows and there may be little land available for expansion of site footprint.

WPL’s Hybrid-SAF™ is a highly efficient biological treatment technology. The custom-built cells can be retrofitted into any on-site vessels regardless of shape or size, a key advantages include a significant reduction in:

  • the high cost of rebuilding infrastructure
  • size of footprint
  • electricity consumption
  • whilst increasing the overall process capacity of the plant
  • and improving environmental compliance

Our service extends to the hire of packaged wastewater treatment to ensure your site is not disrupted and compliant during a repurpose project.


  • Water utilities and municipal sites
  • Commercial sites
  • Ideal for environmentally-sensitive areas

Enhanced WPL Hybrid-SAF™ technology

  • High-rate process (submerged moving-bed, fixed-film reactor)
  • Achieving <0.4mg/l ammonia discharge
  • Site footprint 30% smaller than comparable technologies
  • Energy consumption reduced in line with footprint reduction
  • Fully optimising new or existing on-site vessels regardless of shape or size
  • Off-site build- minimal installation & commissioning time
  • Installed on site within days
  • Reduces waste and optimises site footprint.
  • No mechanical or electrical moving parts within the tank
  • Easy to operate and maintain

Design and off-site build

  • CFD modelling carried out
  • Vessel scanned to ensure precision fit
  • Built in a quality controlled environment
  • Collaborating early on a project – fully understand the scope

Watch now: Wastewater treatment using WPL Hybrid SAF technology has achieved total compliance over the first year of operation at a Wessex Water site. Watch the full video on how enhanced hydraulics and adaptable design also delivered a 75% cost saving for the client.

WPL’s Hybrid-SAF™ enhanced biological treatment process will be retrofitted into the existing RBC tank

Illustration above: Repurposed rotating biological contactor (RBC) tank retrofitted with WPL’s primary settlement, biological (Hybrid-SAF) and final settlement process treatment stages

Discover more: Cost-efficient Hybrid SAF™ permanently replaces RBC for United Utilites