A one-dimensional transport model for bimolecular reactive solutes under nonequilibrium sorption is developed for solute nonequilibrium sorption characteristics. The transport process of bimolecular reactive solutes under advection, dispersion, sorption (equilibrium and nonequilibrium), and reaction (oxidation and natural oxygen demand) is considered, and COMSOL Multiphysics is used to solve the model numerically. The most important results are as follows. (1) The first stage of pollutant removal under nonequilibrium sorption conditions is rapid remediation dominated by oxidation reactions, and the second stage is slow remediation dominated by nonequilibrium sorption. (2) Considering nonequilibrium sorption can describe the pollutant tailing more accurately. (3) The chemical reaction rate k, equilibrium sorption ratio f, and nonequilibrium sorption rate a significantly influence the removal efficiency of pollutants, and the impact of a is related to the rate of equilibrium sorption to total sorption f. The effect of Peclet number is less obvious. (4) In cases of small k, a, f and large Pe, the tailing effect is more serious, and nonequilibrium sorption must be considered.