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Rotofix® and Hallett 30 team up to provide wastewater treatment to Quebec resort

Posted by UV Pure Today on 3/27/2013 to Company News
We present another case study this issue, this time about a collaboration with Premier Tech, our Quebec-based Engineered Solutions partner and used the UV Pure Hallett® 30 to help provide a high-performance solution for treating a challenging wastewater situation.

Auberge La Montagne Coupée is located at the top of a steep mountain slope, some 350 ft (107 m) high, on the shores of l’Assomption River in the Lanaudičre region, about an hour from Montreal.  
Open year-round, the inn offers 47 rooms and suites, a gastronomic menu, a health centre, a pool, and several outdoor activities (skiing, snowmobiling, hiking and horseback riding).

When Marie Préfontaine and Suzie Beaudry purchased the inn, it was obvious that the wastewater treatment system needed to be replaced. The old drainfield had reached the end of its useful life. Besides the nauseating smells bothered the guests and the proximity of the water table (a source of drinking water) and L’Assomption River (considered as a sensitive zone) warranted the immediate installation of a high-performance system that would ensure the treatment and efficient disinfection of wastewaters prior to their disposal into the environment.

The physical limitations of the site (difficult soil type, steep slope, high strength and variable loads of wastewater, sensitive zone) all needed to be addressed to find the right wastewater treatment solution. But there was something else to consider. The inn’s owners were firm in their resolve to be accredited as a “Green” establishment by the Quebec Association of Hotel Operators and the Quebec Health Spas Association. Thus, the solution had to be eco-friendly and very low in energy consumption, yet provide reliability and high-performance. Finally, available space, warranty, follow-up and maintenance of the system also had to be taken into account.

The solution consisted of a Rotofix® treatment unit combined with a tertiary UV treatment using the UV Pure Hallett® 30 technology followed by a surface disposal of the treated effluent. The system was installed inside a building in harmony with the existing infrastructures. Its modular design will allow higher flows of wastewater to be treated (up to 60 m3/d) in the event of an expansion of the inn (adding rooms, seats in the restaurant, services at the health centre, banquet hall, etc.)

Design criteria:
  • Design flow = 50 m3 per day
  • Concentration of BOD5 at septic tank inlet = 375 mg/L
  • Concentration of suspended solids at septic tank inlet = 250 mg/L
Disposal goals:
  • BOD5 - 20 mg/L
  • Suspended solids - 20 mg/L
  • Fecal coli forms < 200 CFU/100 mL
Average sampling results for 2012:
  • BOD5 - 3 mg/L
  • Suspended Solids - 5 mg/L
  • Fecal coli forms ≤ 10 CFU/100 mL
The owners are very satisfied with their treatment system. In fact, results show that the system performances are consistent month after month, year after year. It not only meets environmental standards, but its physical design, follow-ups and annual maintenance are simple and all exceed expectations. The inn has an annual maintenance contract with Premier Tech Aqua, which takes the responsibility for this task off the owners’ shoulders and ensures the system’s proper functioning.

Benefits and Future
The owners, Marie Préfontaine and Suzie Beaudry, plan to expand the inn. Their treatment system will meet their needs. Consequently, they will not be required to make additional financial investments or undertake major work to treat the higher flow of wastewater. And, regarding being recognized as a Green establishment by the Quebec Association of Hotel Operators and the Quebec Health Spas Association, one of the owners stated: “One day, we will reclaim the water being treated by the Rotofix®. That’s for sure!” Marie Préfontaine Co-owner, Auberge de la Montagne Coupée. For more information, click here.
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March 2013
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