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

Date

2015-04-17

Authors

Altimimi, Sara

Journal Title

Journal ISSN

Volume Title

Publisher

University of Guelph

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.

Description

Keywords

Wastewater, Dairy wash water, milkhouse, Wastewater treatment, Constructed Wetland

Citation