A leachate drainage system and method for fly ash solidification body landfill

Abstract

The application discloses a leachate guiding and draining system and method for fly ash solidified body landfill, which comprises the following steps: arranging a seepage prevention system at the bottom end of the fly ash solidified body landfill; arranging a main guiding and draining device on the seepage prevention system and connecting the main guiding and draining device to a leachate adjusting pool; arranging a plurality of water collecting pits in the main guiding and draining device; arranging fly ash chelate solidified bodies in the main guiding and draining device; arranging a loess paving layer and a vertical seepage guiding device on the top of each layer of the solidified bodies after the solidified bodies are stacked; and the vertical seepage guiding device corresponds to the water collecting pit; collecting and draining the leachate generated by the first layer of the solidified bodies through the main guiding and draining device; collecting and draining the leachate generated by the second layer of the solidified bodies through the vertical seepage guiding device on the top of the first layer of the solidified bodies and then converging the leachate to the water collecting pit; and the like, so that the leachate is finally drained to the leachate adjusting pool through the main guiding and draining device. The application has the advantages of low construction cost, convenient operation and maintenance, easy adjustment and optimization, low operation cost and the like.

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