Purusaqua builds combifilters based on the succesful drum filters we developed. A combifilter is a mix of a drum filter and a biological filter, which results in a very compact yet high-capacity filter.
The biological part in a combifilter often consists of a moving bed. A moving bed filter consists of a carrier material for bacteria that is kept in motion by air. It’s also possible to fill the biological cpmartment with filter mats for example.
Thanks to their very high biological capacity, these combifilters are very suitable for very demanding applications such as of fish farms, zoos and heavily populated ponds.
Purusaqua combifilters come standard with extensive controls, flush pump and lid. Our combifilters are unique in performance and quality, which is also the reason why they are used in many countries.
A couple advantages of our filters:
Casing fully made out of 12mm thick polypropylene (PP)
Built very robustly, the most heavily loaded weld seam has been welded with an extruder
Very high volume for the biological filter
Available for maximum water flows ranging from 25m³/hr up to 250m³/hr
Gear-driven, no axle connections under water that can start to leak
24VDC propulsion (also suitable for swimming ponds) (25, 50 and 100m³/hr model)
It’s possible to install a UVC lamp
Measuring of the water level through pressure
There are no floats that can get stuck
Purge levels can be set per mm
Low water alarm can be set per mm (deactivates the circulation pump and optionally the UVC when the water level gets too low)
Rotation speed of the drum can be infinitely adjustable
Flush time infinitely adjustable
Overflow protection can be set, deactivates the propulsion engine when the load is too big
Controls automatically shut down the (optional) UV when the lid is opened
Flush process is blocked when the lid is opened, this prevents risk of entrapment!
Equipped with an alarm output
Controls keep track of the intervals between the last 3 flushes
PLEASE NOTE, read our article about drum filters before selecting a combifilter!