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Broadly speaking there are two distinct forms of treatments provided. Reed beds and Wetlands.

Reed bed

Reed beds (sub surface flow systems) are lined (using impervious liners) gravel based beds. Effluent is maintained below gravel height whereby no effluent is visible, providing a contained system, thus limiting odours and visual impacts, ensuring public safety. Therefore they are ideally suited to domestic situations for secondary and tertiary treatments, although their versatility lends their suitability to other applications. Normally preceded by primary septic tank treatment.


Wetlands (surface flow constructed wetlands) are open shallow water systems, constructed in in-situ soil (provided certain criteria can be met). Wetlands resemble natural habitats. They are ideally suited to commercial, industrial and agricultural situations. Where in situ soils are not suitable, lined applications are available. Normally proceeded by settlement ponds or tanks. In domestic situations, as wetlands are open water bodies they are more suitable at tertiary treatment stage and can discharge to ground if soil conditions and/or percolation rates allow and/or alternatively discharge to surface waters.


The type of system used depends on the type of effluent requiring treatment. The systems are designed using expert peer research and specifications. Comprehensive designs are available on request which also adhere to reed bed and wetland guidelines as set out by EPA and Dept. Guidelines. The systems are an established technology across Europe and are readily acknowledged, used and accepted by planning authorities.

Pollution removal

There are various mechanisms by which the systems remove pollutants such as sedimentation, filtration and bacterial processes. The plants oxygenate the effluent through their root network and aid diverse bacterial populations which reduce contaminants to compounds used by the plants and microorganisms.
Depending on which system is used they are effective in the removal of BOD, SS, COD, hydrocarbons and nitrates. They provide excellent pathogen removal and significant heavy metals and ammonia removal.

Supply and supervision

Kit supply only and supervised installation options are available. Supply of quality materials (liners, various wetland plant species, pipe work configurations, control chambers) are available. Kit options include comprehensive installation and maintenance guides. Supervised installations provide 3 year guarantee and maintenance.

Alvin Morrow B.Sc
Abbey, Ballyshannon,
Co. Donegal
Tel: +353 (0)71 9858170
Mob: +353 (0)87 9440370