The results reveal that inhibition of resuspension of particulate matter and nutrients released through sediment dredging decreases with increasing levels of residual sediment. The effects of residual sediments on nutrient concentrations in water were also evaluated. Field sediments from suction and grab dredging areas (including post-dredged and non-dredged sediments) of Lake Taihu were used to assess the release abilities of soluble reactive phosphorus (SRP) and ammonia nitrogen (NH 4 +-N) from the sediment-water interface. To determine sediment resuspension and nutrient release following dredging with a variety of dredging methods, four dredging treatments at wind speeds of 0-5.2 m/s were simulated in this study, namely suction dredging (SD), grab dredging (GD), ideal dredging with no residual sediments (ID), and non-dredging (ND). ![]() Environmental sediment dredging is one of the most common methods for the remediation of contaminated sediments in lakes however, debate continues as to whether the effectiveness of dredging methods contributes to this phenomenon.
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