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Reducing the environmental impact : characterizing the efficiency of sedimentation basins downstream of harvested peat bogs.

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Samson-Dô, Myriam; St-Hilaire, André (2015). Reducing the environmental impact : characterizing the efficiency of sedimentation basins downstream of harvested peat bogs. In: European Geosciences Union General Assembly - EGU 2015, 12-17 avril 2015, Vienne, Autriche.

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Résumé

Harvested peat is a very lucrative industry in both Quebec and New-Brunswick (Canada). Peat enters in many potting mix used for horticulture. However, harvesting this resource can have some impacts on the environment. To harvest peat, industries need to drain the peat bog to dry the superficial layer. Then, it is harvested with industrial vacuums (Figure 1) and the underlying layer is allowed to dry. The drained water can often be laden with suspended sediments (mostly organic peat fibers) that may affect biota of the stream where it is discharged. To counter the problem, this water does not go directly on the stream but first flows through a sedimentation basin, built to reduce suspended sediment loads. The province of New-Brunswick’s guidelines stipulates that concentrations should not exceed 0.025g/L downstream of those basins. Previous research showed that many Canadian streams and rivers have natural background SSC that often exceed this value. This work focuses

Type de document: Document issu d'une conférence ou d'un atelier
Informations complémentaires: Affiche
Mots-clés libres: impact environnemental; sédimentation; tourbière
Centre: Centre Eau Terre Environnement
Date de dépôt: 11 nov. 2020 20:23
Dernière modification: 11 nov. 2020 20:23
URI: http://espace.inrs.ca/id/eprint/4122

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