Pre-Conference Workshop

2-day workshop (August 19-20)

Montana State University (Bozeman, MT)

Fee: $850 USD*

(*price includes breakfast and lunches, does not include lodging or dinners)

Continuing educational credits:

  • 14 Professional Development Hours (PDHs)
  • 4 Continuing Education Units (CEUs)

Objective:  The pre-conference workshop will allow practitioners and regulators gain expertise in the application of state of the art wetland technology for the treatment of domestic wastewater in the context of increasingly stringent total nitrogen and phosphorus regulations.

Target audience: Engineers, consultants and regulators interested in increasing their awareness of and applying TW technology for domestic wastewater treatment.

Learning outcomes:

  • Understand the basic types of treatment wetlands
  • Identify the capacities and limitations of various wetland technologies
  • Be able to apply standard European sizing guidelines
  • Gain exposure to wetland operational strategies for nutrient removal

Course Outline – 108 Barnard Hall, Montana State University

Day 1.  August 19 (8:00am-4:00pm)

8:00amBreakfast (in room)
8:30amGeneral State of Current Treatment Wetland Technology for Domestic Wastewater Treatment
Treatment Mechanisms Overview
Types of Treatment Wetlands
Horizontal Flow
Vertical Flow
Surface Flow
Bio-solids Removal
9:30amComparison of wetland technologies, their treatment capacities and relative sizing requirements.
10:15amWetland Design Tools and Guidelines Surface Flow
11:15amWetland Design Tools and Guidelines Horizontal Flow
12:00pmLunch (walk 8 minutes to Bridger Brewing)
1:00pmWetland Design Tools and Guidelines Vertical Flow
2:15pmForced Aeration
3:150pmBio-solids Removal Wetlands
5:00pmDay End

Day 2.  August 20 (8:00am-4:30pm)

8:00amBreakfast (in room)
Wetland Systems Operational Design
8:15amOptimizing Systems Operational Design
9:15amPhosphorus Removal Mechanisms and Options
10:15amStorm Events: Combined Sewer Focus
11:00amDiscussion: The Role of Climate in Wetland Selection and Design
12:00Lunch (in room - Sola Café)
1:00pmCase Studies/Discussion/Design
3:15pmDiscussion Wrap-up
5:00pmDay End and Certificate Presentation
Register Today


Best Western Plus GranTree Inn

1325 N. 7th Ave Bozeman, MT 59715


Call:  406-587-5261, and request the Meetings Northwest meeting or refer to code:  MN81817.

Hotel has a free shuttle from the Airport – On arrival proceed downstairs towards baggage claim and before they retrieve luggage, pick up the house phone and call for shuttle service.


Carlos A. Arias

Carlos Avrias, Civil Engineer, Senior Researcher at Aarhus University (Denmark), MSc in environmental engineering and a PhD in Biology, with over 20 years of experience in the development of eco-technological systems for the treatment of waters, wastewaters and runoff control. Carlos’ research is dedicated to the identification, the development and optimization of processes involved in the removal of pollutant from waters. Devoting efforts to improving the removal of nitrogen, phosphorous, pathogen and emergent pollutants in decentralized wastewater systems by developing innovative operational schemes, introducing the use of the intensification of constructed wetlands and reactive media for the improvement of performance. Work has also been done in the determination of pathways of nutrients and emerging micro-pollutants from urban, industrial and agricultural catchments. During this period efforts have been devoted to technology and knowledge transfer to countries such as India, Vietnam, China, Colombia, Uruguay and Mexico. C. Arias is visiting professor universities in India, China, Peru, Mexico and Colombia and the author of more than 100 scientific publications dealing with water pollution.

Pascal Molle

Pascal Molle, Senior Researcher at Irstea (France), MSc in environmental engineering and a PhD in chemical engineering for wastewater treatment, with 19 years of experience in the development of eco-technological systems for the wastewater treatment for small and medium size communities, sludge treatment and storm waters. Molle oversees the research for waste water treatment for small and medium size communities. He created and is leading a French national group on the evaluation of new treatment processes for small communities ( involving all French public institutions implied in sanitation issues. His research focuses on the development and optimization of processes of treatment wetlands for different kind of influent (domestic WW, sludge, storm waters) and climate conditions (tropical, mountain areas).  Using a specific research platform (REFLET) dedicated to treatment wetlands, and full scale experiments, research has been devoted to improve performances (phosphorus, nitrogen …) intensify systems (compactness), develop associations of conventional systems with treatment wetlands and modeling design tools.  He’s driving research and expertise to develop sustainable treatment systems in French outermost tropical islands and southern countries (Morocco, Tunisia, Costa Rica …). His research includes knowing water and nutrient reuse objectives.  He is the author of more than 100 scientific publications dealing with wastewater treatment.

Scott Wallace

Scott Wallace is a founding partner of North American Wetland Engineering (now Naturally Wallace Consulting).  He is an award-winning engineer known for his innovative and practical solutions. Scott’s recognition includes winning the 2005 Grand Award for Engineering Excellence from the American Council of Engineering Companies (ACEC) for his design of a hydrocarbon remediation wetland in Casper, Wyoming and the 2009 Diamond Award for Engineering Excellence in Water Resources from ACEC for his design of a natural treatment system to treat spent deicing fluid at Buffalo International Airport in Buffalo, New York.

Mr. Wallace is the co-author of Treatment Wetlands, Second Edition, the definitive textbook on wetland treatment systems.  He was also Principal Investigator for Small-Scale Constructed Wetland Treatment Systems; Feasibility, Design Criteria, and O&M Requirements on behalf of the Water Environment Research Foundation (WERF).

Specializing in ecological design, including constructed wetlands, groundwater remediation systems, stream restoration, and watershed management, Mr. Wallace has extensive experience in industrial and municipal wastewater treatment.  His experience also includes wastewater treatment plant operation, laboratory analysis (bench chemistry), groundwater monitoring, and delineation of natural wetland ecosystems.

Mr. Wallace is a highly-regarded author and presenter, published in numerous technical publications. He is also the inventor of several wastewater treatment processes, including Forced Bed Aeration™, which is now being studied at more than a dozen different research institutions around the world due to the wide-ranging application of the technology to solve environmental problems.  Mr. Wallace is the designer of over 250 treatment systems, including the wetland system at Heathrow Airport in London.

Christopher Robert Allen PhD. 

Christopher is an instructor in the Montana State University Department of Civil Engineering and Primary at Constructed Wetland Designs LLC.  Teaching experience includes being the instructor of record for five different course offerings, dealing primarily with hydrology, natural treatment systems, and groundwater remediation as well as introductory mechanics. Ten years of research experience in natural treatment system optimization with a focus in treatment wetlands. Wetland specific research includes nitrogen cycling / removal and greenhouse gas production, as well as treatment wetland design for nitrogen removal in cold climates. Current faculty advisor for Montana State University Engineers Without Borders chapter, with over a decade of experience working on development projects.

Major Sponsors

WETPOL Supporters