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This study investigated the release rule of total nitrogen from sediments by Tubifex tubifex bioturbation indifferent environmental conditions. Tubifex tubifex density, temperature, pH value and dissolved oxygen were selected as influencing factors. The results showed that bioturbation of Tubifex tubifex had a good accelerating effect on total nitrogen release of sediment and the concentration of...
For the red mud is the main waste of aluminium works which pollutes the water environment. In order to utilization the red mud, the CaO-Fe3O4-Al2O3 flux for hot metal pretreatment is developed. The phase diagrams of the CaO-Fe3O4-Al2O3 system at 1350°C and 1600°C was calculated and analyzed with the FactSage software, and verified by the experimental results. In the phase diagram of the CaO-Fe3O4-Al...
Water quality of Darning Lake, located at the central district of Jinan City of China, can be obviously affected by the external nutrients loading. There are about 8.07times107 kg seriously contaminated loosing sediment with 1.30times105 kg phosphorus in the lake sediment. The buffering effect of the sedimentary phosphorus plays a critical role in the lake water quality. Under natural conditions,...
One-dimensional DYRESM-CAEDYM model was used to study the effect of water transfer project on water quality of Chaohu Lake, which is situated in central Anhui Province, the lower reaches of Yangtze River. The simulated results of temperature, TN, TP showed good agreement with observed data in 2005. There was also good agreement between monitored data and simulated concentrations of chlorophyll-a although...
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