Copa's Submerged Aerated Filter (SAF) is a high performance biological filter for the treatment of both domestic and industrial wastes.

Copa SAF for above or below ground installation, offers a robust, small footprint treatment solution, which can achieve a final effluent consent standard of 15/25/5 (after settlement).
Copa SAF packaged treatment works are suitable for treating wastewater from population ranging from 100-3000 persons, offering a complete turnkey package including civil works. With few moving parts the Copa SAF is simple to operate and low in maintenance.
Copa boast numerous reference sites in the UK and overseas for their packaged treatment works which can be installed above or below ground.

Applications

• Permanent wastewater treatment plants
• Mobile emergency response treatment units
• Temporary treatment during planned maintenance
• Propping up biologically overloaded works
• Leachate treatment
• Industrial waste treatment
• Pilot studies

Principle of Operation

The Copa SAF is a fabricated steel tank split into treatment cells, arranged in series. Each cell houses a number of fine bubble membrane diffusers, which are mounted below a packed rigid corrugated PVC media.

The diffusers provide air to keep the treatment system healthy and also air scour the media, releasing dead biomass and removing the need for backwashing. For both above and below ground installations the diffusers can be removed for maintenance without removing the media.

Air is supplied to the diffusers by duty/standby, side channel, low maintenance blowers, usually housed in a GRP kiosk located adjacent to the SAF unit.

Flow enters the first SAF cell at high level, passes through the media in each cell in turn, and exits the final cell also at high level. This arrangement ensures that the SAF media is constantly submerged and the SAF remains active during periods of low or no flow.

Copa SAF has a well proven performance record supported by over seven years of on going development and many installations throughout the wastewater industry, both in the UK and overseas. Copa SAF has an immediate effect in reducing BOD and is likely to be 100% effective within 4 weeks of start-up.

Advantages of Copa SAF