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Treatment of Dairy Farm Wash Water Using a Horizontal Sub-surface Flow Constructed Wetland

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Title: Treatment of Dairy Farm Wash Water Using a Horizontal Sub-surface Flow Constructed Wetland
Author: Altimimi, Sara
Department: School of Environmental Sciences
Program: Environmental Sciences
Advisor: Gordon, Dr.Robert
Abstract: A HSSFCW in Alfred, Ontario was designed and constructed to be 48 m2 with a width to length ratio of 1:3. The total cost of the treatment system was $11,603. The Lawrence Holmes wetland and the Twin Hills wetland located in Spencerville and Richmond Ontario, respectively were both designed with a 1:2 width to length ratio. Water quality evaluation suggested that BOD5 removal is effective in HSSFCWs with excellent removal observed at both farms with 83-95% BOD reduction. The wetland was effective at removing TSS. However, both wetlands showed low E.coli and N removal. The Lawrence Holmes and Twin Hills wetland experimental BOD k20 values of 0.45±0.06 d-1 and 0.53±0.06 d-1 were obtained. A BFS slag passive P filter was established at the Lawrence Holmes wetland. Removal rates as high as 73% in the first four months of operation was achieved.
URI: http://hdl.handle.net/10214/8753
Date: 2015-04
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