Constructed wetlands for tertiary treatment of domestic wastewater and creation of wildlife habitat

Hanson, Alan and McCullough, Brian and Kerekes, Joseph (1997) Constructed wetlands for tertiary treatment of domestic wastewater and creation of wildlife habitat. MAGYAR VÍZIVAD KÖZLEMÉNYEK, 3. pp. 351-359. ISSN 1416-1389 (nyomtatott); 1419-6107 (elektronikus)

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Abstract

Hundreds of constructed wetlands for the treatment of wastewater have been built in Europe and the United States. The benefits and function of these wetlands as wastewater treatment systems have been documented in numerous books, and symposia, as well as hundreds of peer-reviewed scientific papers A new, value-added approach is to design constructed wetlands to optimize their wastewater treatment efficiency and value as wildlife habitat. Construction of two wetlands at River Hebert River, Nova Scotia, Canada was completed in October, 1994. The purpose of these wetlands is to create wildlife habitat and treat domestic wastewater that is currently being discharged from a primary/secondary aerated lagoon system Segment 1 is a 1.9 ha highly engineered wetland that has two internal berms to maximize retention time. The bottom of this wetland has been cleared of all vegetation and graded level. Segment 2 is a 6.5 ha wetland that has a morphology similar to natural wetlands. There is slight variation in the elevation of the wetland, with deeper areas created during the excavation of materials to build the external dikes and nesting islands The objectives of this study is to evaluate the cost-effectiveness of the two wetland designs in. treating wastewater and providing wildlife habitat It is planned for water chemistry, primary productivity, and wildlife use of the constructed wetlands to be monitored over th< next 10 years.

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