QUANTIFYING CHEMICAL REACTIONS BY USING MIXING ANALYSIS IN GROUNDWATER-RIVER INTERFACE

This work is motivated by a sound understanding of the chemical processes that affect the organic pollutants in an urban aquifer. Urban aquifers may suffer pollution from different recharge sources such as leakage from sewer and septic systems, seepage from rivers, seawater intrusion, and losses from water supply network. As a result, a wide range of organic pollutants are found in urban aquifers (Fig. 1). Since these pollutants reach groundwater environment, their occurrence depends on simultaneous transport and biogeochemical processes. However, the quantification of these processes is not an easy task. The objective of this work is to propose an approach to quantify the chemical processes that occurs when river water infiltrates an aquifer.