In-situ intercepting and purifying device for agricultural non-point source pollution

The utility model discloses an in-situ intercepting and purifying device for agricultural non-point source pollution. The device comprises an air inlet pipe, a main air pipe and auxiliary air pipes, the air inlet pipe is connected with the main air pipe through a cross joint, the multiple parallel auxiliary air pipes are arranged in the direction perpendicular to water flow and connected with themain air pipe through a tee joint, air holes are evenly formed in the bottoms of the main air pipe and the auxiliary air pipes, biological ribbons are fixed below the air holes, and vibration devicesare connected to the lower ends of the biological ribbons. According to the device, the principle of biological ribbon purification is utilized, the upper end of the biological ribbon is fixed to theair pipe of the purification device, the lower end of the biological ribbon is connected with the vibration device, deviation of the ribbon due to the too high water flow speed is avoided, and the vibration device can be starte