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The factors that impacted hydraulic vulnerability of water distribution system are discussed, and a quantitative hydraulic vulnerability and risk assessment model is presented in this paper. In this model, EPANET is employed as the hydraulic solver of water networks and Monte-Carlo stochastic simulation is incorporated for randomly generating failure scenarios of both pipes and water plants. Finally,...
Taking the Beitang and Dagu Sewage Discharge Channels in Tianjin, China, as study objects, concentrations of heavy metals and organic matter are determined in upper layer, middle layer and lower layer sediment samples. Geo-accumulation index method and correlation analysis are taken to study the distribution and pollution level of metals between layers in the two channels contrastively. The results...
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