This is the system for eliminating the particulate material in the dust collection gas with droplet, liquid film bubble and others by dispersing cleansing solution or that removes by carrying out dissolution or chemical reaction by having the gaseous contaminant pass through gas, liquid contact surface, to disperse at the inside of the liquid (adsorbent). Cleaning dust collection can effectively process dust and gas contaminant together. Thus, this is a device that is used widely for polluted gas treatment. In particular, particle treatment is carried out by attaching grain dust to the droplet, liquid film and bubble and others that are generated by dispersing cleansing solution to coagulate and to collect. Cleaning dust collection device wet scrubber, ventury scrubber, eject ventury scrubber, cyclone spray scrubber, packing tower etc