The dataset includes model outputs and associated code. The file 'particle data' contains the residence time and maximum penetration depth data shown in Figure 3. The file 'Relative changes in the accumulated mass of solute' provides the model output data shown in Figure 5. The file 'The relative change of spatially averaged reactive rate' provides the model output data shown in Figure 6. The file 'The relative change of nitrate influx and instantaneous nitrate removal efficiency' provides the model output data shown in Figure 8.