Abstract:On analysis of the complicated characteristics of the water quality transformation mechanism in sluice- controlled river reaches, the multi-phase transformation of water quality based on the mutual regulation of water body, suspended matters, sediments and organisms was put forwarded. First of all, a group of mathematical expressions describing the mass transportation processes among different phase states of water were derived. Then, a multi-phase transformation model of water quality in sluice-controlled river reaches with certain physical mechanisms was established. Finally, the experimental data of Huaidian Sluice operation was used to identify and validate the parameters of the multi-phase transformation model of water quality, and to simulate the spatial and temporal change processes of water quality ingredients among different phase states. The following findings were discovered from the results: The concentration change of each phase water quality in upstream and downstream are affected by the flow and the gate operation mode, also was the algae¢s growth and enrichment state. The reaction processes in upstream and downstream show different leading reaction mechanisms with the change of sluice operation. Increasing the disturbance to water body, sluice operation leads to stronger exchanges between water body and external matters. The change of cyanobacteria (PCY) quantity in the early test period is mainly affected by water migration, in the later test period, the change of PCY quantity in the upstream section is mainly affected by the obstruction of sluice, and in the downstream section is comprehensively influenced by flow velocity, flow and change of nutrient concentration.
窦明, 米庆彬, 左其亭. 闸控河段水质多相转化模型[J]. 中国环境科学, 2015, 35(7): 2041-2051.
DOU Ming, MI Qing-Bin, ZUO Qi-Ting. Multi-phase transformation model of water quality in the sluice-controlled river reaches. CHINA ENVIRONMENTAL SCIENCECE, 2015, 35(7): 2041-2051.