Abstract
Taking sandy aquifer as the object which lies in seawater intrusion areas of Dagu River in Qingdao. We select groundwater, seawater and the medium, and then evaluate composition and properties. Through seepage simulation installment to simulate the process of sea and fresh water displacement each other, then determine the regularity of the Permeability and the main ion in the course of sea and fresh water displacement. Finally, try to use numerical simulation to study multicomponent ion exchange process under water sensitivity. The kinetic parameters and the turning point of breakthrough curve testify the water sensitivity phenomenon in the sea and fresh water transitional zone, and multicomponent ion exchange leads to the occurrence of water sensitivity phenomenon.
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