Harmful gas treatment device for environmental protection engineering

The invention discloses a harmful gas treatment device for environmental protection engineering, and relates to the technical field of environmental protection engineering. The device comprises a bottom plate, wherein a storage box is welded to the outer wall of one side of the bottom plate; supporting columns are welded to the top outer surface of the bottom plate; a top plate is welded to the supporting columns and the top outer surface of the storage box; a working box and a transfer box are welded to the top outer surface of the top plate; a transmitting box is welded to the bottom of theinner side of the storage box; a connecting plate is welded to the top of the inner side of the working box; a positioning plate is welded to the bottom outer surface of the connecting plate; and a circulating moving type contamination mechanism is arranged in the working box. According to the device, harmful gas can be filtered twice, a filter plate can be rapidly taken out; the temperature can be increased in a heating