Flocculation of Fraser River sediments due to pulp mill effluents ...
Recently, researchers noted an aggregation phenomenon downstream of a pulp mill effluent discharge. A large quantity of the sediment in the Athabasca River deposited downstream of the discharge of the pulp mill effluent (Krishnappan et al., 1994). This effect may be significant on the Fraser River,...
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| Format: | Text |
| Language: | English |
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University of British Columbia
2009
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| Online Access: | https://dx.doi.org/10.14288/1.0050356 https://doi.library.ubc.ca/10.14288/1.0050356 |
| Summary: | Recently, researchers noted an aggregation phenomenon downstream of a pulp mill effluent discharge. A large quantity of the sediment in the Athabasca River deposited downstream of the discharge of the pulp mill effluent (Krishnappan et al., 1994). This effect may be significant on the Fraser River, where a number of pulp mills along its length discharge effluent. This aggregation phenomenon could not be explained by existing coagulation / flocculation theories, and an experimental investigation was undertaken. Experiments involved simple jar testing and settling tests in settling columns. The jar tests were completed in Prince George using pulp mill effluent, and Fraser River water. Throughout these tests, turbidity measurements were made which resulted in some ambiguity surrounding interpretation of the results. Nonetheless, on addition of pulp mill effluent to river water, it was noted that a reduction in turbidity occurred with respect to expected values immediately after mixing. The magnitude of this ... |
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