In 2001, an Abydoz Engineered Wetland pilot project was installed to treat sewage from approximately 35 homes in Marystown, Newfoundland. Due to the success of the Marystown system and an independent review over 2 years by BAE NewPlan (SNC Lavalin), Abydoz was granted approval in 2004 from the provincial regulators to construct full-scale municipal engineered wetland systems in Newfoundland and Labrador.
The system has been successfully operational since commissioning, nearly 20 years.
Design
Population Equivalent: 122 PE
Average Flow: 55 m3/day
Wetland Treatment Area: 640 m2
Average Effluent Results
CBOD: 7.2 mg/L
TSS: 17.6 mg/L
Process
The system is comprised of a septic tank for solids settling followed by two sub-surface flow horizontal wetland beds, operating in parallel. The effluent undergoes biological treatment in the wetlands and treated effluent is independent consultant in conjunction with the National Research Council of Canada. Treatment results were consistently high. Display boards and walking trails have been incorporated into the wetland project to provide environmental education. Abydoz provides assistance with school tours at our system locations.