Washing tower used for treating low-radiation coating exhaust

The invention relates to a washing tower used for treating low-radiation coating exhaust. The washing tower comprises a tower body (1) , wherein an air outlet (4) is formed in the upper end of the tower body, and a sewage outlet (6) is formed in the lower end of the tower body; an air inlet (3) is further formed in a side wall of the lower end of the tower body; the tower body is connected with a lye source (2) through a spraying pipe (5) and the washing tower is characterized in that a group of sprinkling areas (11) are arranged inside the tower body; the sprinkling areas (11) are arranged above the air inlet (3); an air distribution board (8) is connected in a matched manner inside the tower body and arranged between a bottom spraying area and the air inlet. The washing tower provided by the invention has the following advantages: the washing tower is high in stability, simple to operate, safe, reliable and convenient to maintain; besides, due to the adoption of multilayered sprinkling areas with different fillers, a better purifying effect is achieved.