Counter-flow sludge drying process

The invention relates to the technical field of sludge drying treatment, and discloses a counter-flow sludge drying process. A large number of paving areas are stacked layer by layer, linear turning motion is changed into rotary turning motion, and finally, the paving, airing and drying effects of dozens of times are achieved by utilizing effective land resources. The limited land resources can be utilized, the natural drying effect of dozens of times is achieved, the purpose of saving the land resources is achieved, the original paving area is kept, low-temperature dry air is used for air drying, the cost is low, the normal-temperature operation state is achieved, the requirements for mechanical equipment and working conditions are not high, and the working environment is suitable. The installation condition is low, large-scale popularization and use can be achieved, the transportation cost caused by material transfer, material loss difficult to avoid in the material conveying process and environmental pollu