Description of the main technology, structure, performance, characteristics, and quality level of the horizontal water and gas distribution system: The air and water distribution system of the filter mainly consists of three parts: the middle water and gas distribution channel, the vertical water and gas distribution pipe, and the horizontal water and gas distribution pipe.

The material of the bottom support plate of the middle water and air distribution channel is precast concrete board, and holes should be reserved on the board according to the longitudinal layout of the air and water distribution pipes. The hole positions should be precise to ensure that the longitudinal air and water distribution pipes are evenly distributed at the bottom of the entire filter tank.

Filter water and air distribution system