Based On The Theory Of Capillary To Optimize For Leachate System

With the development of our country’s economy,the amount of domestic waste production is also growing,and now the basic national conditions of our country decide that the sanitary landfill is still the main way of China’s waste disposal.However,with the increasing age of landfill operation,the clogging of landfill leachate system has become an important problem that seriously threatens its safe operation.According to the researches and current applications of new-type drainage material—capillary at home and abroad,and combined with the present situation that the leachate drainage system of landfills is easily prone to blockage,this research proposes the application of this new material in the leachate drainage system of landfills,and carries out a comparative interior simulation experiment.The results show that:(1)The capillary doesn’t play the key role when leachate drainage system of landfills unblocked.However,when leachate drainage system gets blocked,the capillary can greatly enhance the drainage capacity of the leachate so that the leachate can be discharged on time.(2)The higher water head,The more serious the blockage of drainage layer,the higher the arrangement height,the greater the layout density,the better drainage effect appears.The primary and secondary relationships of the drainage arrangement on the effect of the guide row are:height>layout density>arrangement position.(3)The best process design for optimizing the infiltration of domestic waste landfill with a capillary permeable belt is using a double-layer capillary drainage system 90°placed in the leachate system and penetrate the gravel layer and extend to the upper layer of the sediment layer,with 4 sets of drainage belts per square meter of the drainage layer.This study broadens the application range of the capillary permeable belt,and provides the train of thought and the basis for the design of the leaking system of the leachate system.