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Impact of dredging on water quality at Kewaunee Harbor, Wisconsin
| 题名： | Impact of dredging on water quality at Kewaunee Harbor, Wisconsin |
| 作者： | I.K. Iskandar, J.H. Cragin, LV. Parker and T.F. Jenkins |
| 关键词： | Dredged materials Great Lakes Harbors Sediments Wastes (industrial) Water quality |
| 摘要： | Six sediments and four water samples were collected from Kewaunee, Wisconsin, in 1981, prior to dredging of this Lake Michigan harbor. A modifled elutrate test was used to estimate potential impact on water quality upon harbor dredging and disposal of the sediments in a confined facility. The modification of the test included a comparison between containment release under aerated vs unaerated conditions and filtered vs unfiltered elutrates. Statistical analysis showed that the differences in the chemical characteristics between die filtered and unfiltered samples were significant for soluble reactive P and all the tested metals except Cu. Significant but low amounts of heavy metals (Cd, Pb, Zn, Ni, Fe, Mn) and soluble reactive P will be released to the water if the effluent is not filtered. Under aerated conditions, COD in both the filtered and unfiltered samples was higher than under unaerated conditions. In contrast, total organic carbon was |
| 报告类型： | 科技报告 |
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