Built-in leachate collection and discharge modular pump station device for refuse landfill

Abstract

The invention belongs to the technical field of sanitary landfill of refuse, and discloses a built-in leachate collection and discharge modular pump station device for a refuse landfill. The device adopts a sectional modular design and mainly comprises a water collection section, a water inlet section, a well barrel section and a wellhead section, wherein a water pump fixed mounting platform and a mud pit are arranged at the bottom of the water collecting section; the water inlet holes are evenly distributed in the side wall of the water inlet section, so that a pump station water inlet pipe does not need to be additionally arranged, leachate is collected through the leachate guiding and discharging layer and then enters the water collecting section through the water inlet section, and the design of the landfill leachate collecting, guiding and discharging pump station is simplified. The well barrel section is designed in a segmented mode, and therefore the height of the well barrel can be gradually increased according to the landfill condition so as to adapt to rising of a landfill pile body. The arrangement position of the pump station is changed into a built-in type from a traditional external type, so that the percolate guiding and discharging pipe is prevented from penetrating through a side slope impermeable layer of the landfill, the percolation risk in the percolate collecting, guiding and discharging process is reduced, and meanwhile, the purposes of optimizing the design of a guiding and discharging system and reducing the construction cost can be achieved.

Description

technical field [0001] The invention belongs to the technical field of domestic garbage sanitary landfill and its incineration fly ash sanitary landfill, and in particular relates to a built-in leachate collection and discharge modular pumping station device in a landfill. Background technique [0002] The anti-seepage system and leachate drainage system of domestic waste and incineration fly ash landfill are important components. Among them, the main function of the anti-seepage system is to prevent the seepage of the leachate produced by the landfill from polluting the groundwater and soil. It is mainly composed of anti-seepage structures such as clay anti-seepage layer and HDPE film anti-seepage layer; the main function of the leachate drainage system It is to timely guide the leachate in the landfill to the storage or processing unit outside the landfill pit, prevent the accumulation of leachate in the landfill, and avoid the infiltration and pollution of the leachate; t...

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Problems solved by technology

[0005] The invention aims to solve the technical problems related to leachate drainage in landfills, and provides a built-in leachate collection and discharge modular pumping station device for landfills. The innovative design of the setting mode changes the setting position of the pump station from the external type to the internal type relative to the landfill, so as to prevent the leachate drainage pipe from passing through the anti-seepage layer of the landfill slope and reduce the seepage during the leachate collection and drainage process. filtration risk, and at the same time, it can also achieve the purpose of optimizing the design of the leachate drainage system and reducing the project cost

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