The　insufficient　capacity　of　a　conventional　electrostatic　precipitator　for　fine-particle　control　limited　the　realization　of　ultralow　emission　in　coal-fired　power　plants.　Focused　on　this　problem,　the　study　described　here　reveals　the　design　of　a　lab-scaled　wet　electrostatic　precipitator　(WESP)　and　the　investigation　of　its　removal　performance　for　fine　particles.　The　atomization　of　charged　water　drops　was　adopted　to　replace　the　traditional　water　film　and　mechanical　atomization.　Experiments　for　particle　removal　were　conducted　under　controlled　electric　field　intensities,　water　flow　rates,　residence　time,　and　dust　concentrations.　The　results　demonstrated　that　the　charged　droplets　effectively　improved　the　corona　current　and　particle　removal　efficiency　compared　with　that　of　the　dry　ESP,　and　the　advantage　was　increasingly　apparent　with　increasing　applied　voltage　and　water　supply.　The　efficiency　difference　between　the　ESPs　with　and　without　charged　droplets　increased　from　1　to　17%　as　the　electric　field　intensity　increased　from　2　to　5　kV/cm.　Longer　residence　time　coupled　with　a　higher　applied　voltage　led　to　an　improvement　in　collection　performance,　while　the　removal　efficiency　was　elevated　to　97.70-99.09%　from　89.91-94.94%　as　they　enhanced　from　2.14　s　and　2　kV/cm　to　4.04　s　and　5　kV/cm.　Moreover,　increasing　the　dust　concentration　caused　two　opposite　trends:　the　removal　efficiency　first　increased　to　an　inflection　point　and　then　decreased　gradually　due　to　the　combined　mechanisms　of　particle　agglomeration　and　suppression　of　the　corona　current.　Notably,　the　combination　of　charged　water　drop　atomization　and　an　electric　field　largely　decreased　the　water　consumption　while　keeping　the　comparable　removal　efficiencies　with　conventional　WESPs.