Investigation on the eco-toxicity of lake sediments with the addition of drinking water treatment residuals

摘要: Drinking water treatment residuals (WTRs) have a potential to realize eutrophication control objectives by reducing the internal phosphorus (P) load of lake sediments. Information regarding ecological risk dewatered WTR reuse in aquatic environments is generally lacking, however. In this study, we analyzed eco-toxicity leachates from sediments with or without WTRs toward algae Chlorella vulgaris via algal growth inhibition testing cell density, chlorophyll content, malondialdehyde antioxidant enzyme superoxide dismutase activity, and subcellular structure indices. The results suggested that unanimously inhibited growth, addition different doses (10% 50% sediment dry weight) at pH values (8-9), as well treated for durations (10 180days). was primarily result P deficiency owing adsorption, however, our suggest were considered favorable material loading restoration projects, it shows acceptably low plants.