In　this　study,　a　lab-scaled　wet　electrostatic　precipitator　(WESP)　was　designed　to　investigate　the　particle　removal　with　atomization　of　charged　water　drop,　instead　of　traditional　water　film　and　mechanically　atomized　spray.　The　removal　performance　was　comprehensively　evaluated　via　experiments　with　controlled　applied　voltage,　gas　residence　time,　dust　concentration　and　continuous　operation　time.　The　results　demonstrated　that　supplying　the　charged　droplets　enables　the　WESP　to　achieve　higher　discharge　current　and　removal　efficiency　than　the　dry　type.　The　minimum　removal　efficiency　of　the　WESP　was　elevated　to　91.69%-95.88%　from　91.52%　-　93.89%　of　the　dry　ESP,　as　the　electric　field　intensity　increased　from　2　kV/cm　to　5　kV/cm.　The　coupled　effect　of　the　longer　residence　time　and　higher　applied　voltage　significantly　improved　the　grade　removal　efficiency　in　the　WESP,　which　increased　from　91.86%-95.36%　to　97.86%-98.89%　as　they　were　enhanced　from　2.14　s　and　2　kV/cm　to　4.04　s　and　5　kV/cm,　respectively.　The　removal　efficiency　first　increased　and　then　decreased　as　the　dust　concentration　increased,　while　the　efficiency　drop　at　high　dust　concentrations　could　be　effectively　improved　by　prolonging　gas　residence　time.　Moreover,　injection　of　charged　droplets　could　also　keep　the　advantage　of　improving　removal　efficiency　over　the　dry　ESP　under　continuous　operation,　and　the　decrease　in　removal　efficiency　after　a　certain　operation　time　could　be　largely　avoided　by　applying　higher　voltage.　Particularly,　the　atomization　of　charged　water　drop　in　the　current　WESP　significantly　reduced　water　consumption,　meanwhile　maintaining　the　removal　efficiencies　at　a　level　comparable　with　traditional　water　treated　processes.