Tricel (Killarney) Unlimited Company

Tricel PurafloSecondary & Tertiary Wastewater Treatment System

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Secondary & tertiary wastewater treatment is the further treatment of effluent that is coming from the primary treatment tank. Secondary and tertiary treatment is required when the soil or grounds are located on sensitive sites such as water table protection areas. The combined treatment will result in a high-level pathogen and nutrient reduction.

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What is a Tricel Puraflo Treatment Plant?

Tricel Puraflo treatment modules are ideal as a polishing filter for secondary and tertiary wastewater treatment applications. Environmentally sensitive sites, such as in water table protection areas, often require a higher level of treatment. The required level of treatment is achieved by combining Puraflo modules with a secondary treatment tank, typically an aerobic treatment unit.

The secondary treated effluent goes through a third treatment process (tertiary treatment). Puraflo polishing filter modules and the combined system will provide very high-level pathogen and nutrient reduction.

Tricel Puraflo can be used as both secondary treatment following a septic tank and as a tertiary treatment following a wastewater treatment plant.

This illustration below is a typical Puraflo installation as tertiary treatment.

Collection: Sewage & Wastewater flows from the building into a septic tank or wastewater treatment plant. The solid particles settle and the liquid effluent flows by gravity through an effluent filter to a pump/sump chamber.

Treatment: The effluent is pumped intermittently to the Tricel Puraflo system where it is dispersed evenly onto the bio-fibrous peat filter. A mixture of biological, chemical, and physical processes treat the effluent as it filters through the peat fibre media.

Dispersal or water reuse: The treated effluent flows from the Puraflo modules and disperses itself into the ground through a percolation area. It could also get collected for disposal by other methods. The high treatment levels achieved in the Puraflo system reduce the risk of pollution whilst providing protection for homes, the environment and public health.



  • Flexible sizing options due to modular design feature.
  • Odour-free treatment.
  • Little to no energy consumption eco-friendly.
  • Ideal for holiday homes as compatible for seasonal or intermittent use.
  • Certified to EN12566-3.
  • High level pathogen and nitrogen removal.
  • Green solution, based on passive biofiltration principles.
  • Unique peat fibre with high lignin content, giving a longer media life.
  • Minimal maintenance & operational requirements.



Tricel Puraflo is a modular wastewater treatment system that can be for a larger or smaller capacity depending on a house or building size. The Puraflo system uses peat fiber to break down the effluent making this type of treatment system popular using little to no energy.

The Tricel Puraflo modular system works in conjunction with your septic tank or wastewater treatment plant.