In order to improve the dust removal efficiency of fine particulate matter in industry, based on the traditional wet string grid filtration dust removal and electrostatic precipitator theory, a new electrostatic precipitator experimental system was built by dividing wet dust removal and electrostatic precipitator into zones, under the synergistic effect of wet string grid. The influence of wavelength and amplitude of corrugated plates on dust removal efficiency under different voltages and wind speeds was explored through a single electrostatic precipitator experiment, and the optimal wavelength and amplitude values of corrugated plates were obtained. The influence of voltage, wind speed, and atomization pressure on the dust removal efficiency was explored through composite wet electrostatic precipitator experiments, and verified the dust removal effect of corrugated plates as dust collection plates in wet electrostatic precipitator systems. The results indicated that the dust removal efficiency in a single electrostatic precipitator was directly proportional to the voltage and inversely proportional to the wind speed. The dust removal efficiency of corrugated plates with different wavelengths and amplitudes was significantly improved compared to flat plates under different voltage and wind speed conditions, the impact of amplitude on the dust removal efficiency of corrugated plates was more significant, the corrugated plate with a wavelength of 150 mm and an amplitude of 60 mm had the best dust removal efficiency. The dust removal effect of the composite wet electrostatic precipitator system was significantly improved compared to a single electrostatic precipitator system, the dust removal efficiency of the combination of corrugated plate and water in the composite wet electrostatic precipitator system was higher than that of the combination of flat plate and water. The dust removal efficiency increased first and then decreased with the increase of wind speed and atomization pressure, which was proportional to the voltage. When the voltage, wind speed, and atomization pressure are 30 kV, 0.6 m/s, and 6 MPa, respectively, the maximum dust removal efficiency of the system reached 96.08%.