This article aims to optimize and transform the siphon type sludge discharge truck in the horizontal sedimentation tank,which has the disadvantages of low solid content and excessive drainage.Add a mud content detection device to measure the sludge concentration during the travel process.The scraping device pushes the sludge to a certain thickness and sends out a sludge dis-charge signal through the sludge concentration inspection device for sludge discharge;Transfor-ming the traditional siphon sludge discharge with large drainage capacity into"bottom mud scraper concentration+multi-channel sludge discharge",combined with a sludge concentration meter and pneumatic valve for joint control of automatic sludge discharge,achieving fully automatic intelli-gent segmented sludge discharge.It can save a lot of equipment and site costs in the water treat-ment stage,reduce system operation drug consumption and energy consumption,and achieve sig-nificant energy-saving and emission reduction benefits.