Spray tower has the following advantages: simple process, low operating cost, convenient installation, and corrosion resistance; Stable performance and high purification efficiency; Lightweight, easy to install, transport, maintain and manage; Especially suitable for water-soluble dust gases; Uniform internal spraying and large gas-liquid contact area; Low noise, stable operation, simple and convenient operation; Specially used for neutralization treatment of acidic and alkaline gases generated in the electroplating industry and surface treatment of Wuduo. The air volume can be randomly adjusted and used.