Pilot scale constructed wetlands for Arctic communities
As Arctic communities evolve and populations become more concentrated and urbanized, there is a growing need to develop environmentally sustainable technologies and resource management practices. Wastewater and water treatment methods are a particular challenge for northern communities. Disparities...
| Main Authors: | , , , , , |
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| Format: | Dataset |
| Language: | English |
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Canadian Cryospheric Information Network
2012
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5443/11335 https://www.polardata.ca/pdcsearch/?doi_id=11335 |
| Summary: | As Arctic communities evolve and populations become more concentrated and urbanized, there is a growing need to develop environmentally sustainable technologies and resource management practices. Wastewater and water treatment methods are a particular challenge for northern communities. Disparities in access to safe water treatment methods have been shown between southern/urban populations and northern/Inuit/remote communities. Current wastewater treatment systems are rudimentary in the north because of constraints caused by remoteness, climate, and socio-economic factors. Constructed wetland systems for wastewater treatment are an example of a sustainable, environmentally sound technology available for use in polar regions. This project is developing new engineering and technology solutions to assist Northern communities to adapt to changing demographic patterns and associated public sanitation and related health issues. The current disparity in safe, economical, and effective wastewater treatment is due to a number of factors including logistical issues such as construction and operational limitations, and limited capacity within communities including the requirements for skilled labour. Constructed wetlands present a viable alternative option to some of these problems. Researchers at the Centre for Alternative Wastewater Treatment, Fleming College, are studying the performance, efficacy and functioning of existing natural wetland treatment systems in six communities in Nunavut and examining the chemical and microbial processes occurring in treatment wetlands in cold climates. We are also collaborating with the United Nations Environment Programme to create software that can model treatment wetlands in cold climates and serve as a design and educational tool in the Canadian Arctic and other cold climate regions throughout the world. This project also includes a significant training component through the hiring and training of northern community research assistants to conduct sampling, assist with lab analysis and monitor the pilot wetland cells. It will also contribute to capacity building through targeted community oriented workshops and training of highly qualified personnel. : Purpose: The purpose of this research is to assess the performance of constructed wetland technology in the treatment of municipal wastewater in Arctic conditions with the goal of providing a validated design that can be used by communities and providers of municipal wastewater treatment. We are achieving this overall project purpose by: 1) Consulting with community members, Inuit organizations, and all levels of government to determine needs and limitations; 2) Characterizing existing wastewater treatment facilities ¿ particularly existing natural unengineered wetland systems; 3) Building controlled pilot systems to assess performance and test a theoretical model; 4) Conducting experiments in a new environmental chamber; 5) Calibrating and validating an ecological wetland model designed by Prof. Sven Erik Jorgensen in partnership with the UNEP International Environmental Technology Centre (UNEP-IETC): the software SubWet 2.0 has been upgraded to enable its use in cold climate communities; 6) Providing training to graduate students, technicians, and community members and wastewater operators. Through a partnership with the UNEP, the results of this research can be applied in all cold climate countries, particularly developing countries where the UNEP focuses development activities. : Summary: Northern communities are growing and finding effective, environmentally-sustainable systems for treating wastewater has become a pressing concern. Conventional wastewater treatment systems do not reliably function well in northern climates and are expensive to build, maintain and staff. Constructed wetland systems for wastewater treatment are an example of progressive technology that, although successful in other areas, are in their infancy in northern regions. This project is surveying current wastewater treatment practices in the North and developing new engineering and technology solutions. Through the Centre for Alternative Wastewater Treatment at Fleming College, a prototype wetlands design specific to Arctic environmental characteristics and community needs is being developed. |
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