Trickle Filters

Trickle Filters
MAT Trickle filters bodies made by PP plastic, an alternative to concrete biotowers. They are designed to eliminate dead zones, diffuse water evenly with minimal backwash requirements. Filled with bioballs will provide biological filtration support. MAT tickle filters come fully installed and hydrotested.


The Trickle Filters are fixed-bed, aerated, biotower filters designed to convert the toxic, nitrogen waste found in fish farming water to non-toxic byproducts. Trickle filter biotowers are filled with PE bioballs providing a surface area for micro-organisms to develop. This biological activity results to a gaseous exchange process restoring the levels of CO2 and O2 to viable levels. The biotower model range covers TAN removal rate from 10 gr TAN/day up to 1800 gr TAN/day and from 10kg up to 2600kg, of Max Biomass at 4% feeding ratio, per bio-tower.

Our biological filters, combined with other RAS equipment is the traditional solution for TAN removal in fresh and saline water facilities.

MAT-KULING Trickle Filters are applicable to any biologically charged water volume and it is commonly used to fresh and marine RAS farms and hatcheries.


The Trickle bio-tower Filters, receive pre-filtered biologically charged water which trickles through biomedia (PE bioballs). The media surface offers the layer onto which a biomass of microorganisms is thriving by removing the ammonia through chemical reactions. They are designed to maintain the conditions for maximum microorganism population growth and dead zone elimination. The Trickle filtration is the traditional solution for high TAN Load Removal, by maximizing the wastewater trickling surface, and by optimizing gas exchange.


  • Improved Wet & Dry Filtration
  • Advanced Filter Design
  • High BOD Treatment Capacity
  • Improved Gas Exchange Interface to Restore CO2 and O2 levels in the water
  • Minimized Filter Clog
  • No Need of Periodic Backwashing
  • Resistive & Durable Structure
  • Simplicity in Design & Ease in Operation & Maintenance

Trickle Filters - SPECIFICATIONS

Trickle Filter ModelDiameter [mm]Height [mm]Inlet
Size [mm]
Size [mm]
Trickle Standpipe
Level [mm]
Degas Blower Inlet Size [mm]Max
Rate [m³/h]
TAN Removal Rate with BM-500 [grTAN/day]Max BM-500 Media [m3]Body MaterialBIOMEDIAOVERFLOW SWITCH
MAT T-500500142290901172257540.18PPOPTIONALOPTIONAL
MAT T-7507501768140140151832351500.5PPOPTIONALOPTIONAL
MAT T-10009501835225225158540752700.9PPOPTIONALOPTIONAL
MAT T-1250125020952502501845501155181.73PPOPTIONALOPTIONAL
MAT T-1500150025092802802259501459003PPOPTIONALOPTIONAL
MAT T-20002000242931531521796340015605.2PPOPTIONALOPTIONAL
MAT T-3000300028104504502560631100384012.8PPOPTIONALOPTIONAL
* MAT FILTRATION TECHNOLOGIES™ preserves the right to update anytime the listed prices (if any). Every effort has been made so that the above specs are accurate. However please contact our Sales Department for up to date technical data, electrical specs according to your regional requirements and current Ex-Works pricelist. The listed prices are for the basic equipment and do not include any optional components.

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