Landfill leachate collection apparatus
OwnerJohn Phillip Arnoldinventor
Life of this patent
Estimating the term…
Abstract
A landfill (10) having a leachate collection apparatus including a layer of geonet material (40) disposed above a liner (38) as its primary leachate flow path. Leachate flows along the geonet material to a collection trench (16) located along an edge (14) of a generally planar landfill area (12). The superior hydraulic conductivity of the geonet material (34) disposed above a liner (32) is provided below the primary drainage layer for additional ground water protection. A collection box 918) having both a leachate collection compartment (54) and a leakage collection compartment (56) is disposed in alignment with openings (80, 82) formed in the respective liner layers. The sealing surfaces (64,68) between the collection box and liners are all located on upper surfaces of the collection box.
Claims39
A leachate collection apparatus for a landfill disposed over a subjacent stratum, the leachate collection apparatus comprising:
- a lower liner disposed over the subjacent stratum;
- a leakage collection layer of geonet disposed over the lower liner;
- an upper liner disposed over the leakage collection layer of geonet;
- a leachate collection layer of geonet disposed over the upper liner;
- a layer of geotextile filter fabric disposed over the leachate collection layer of geonet;
- a leachate collection compartment having an upwardly facing inlet opening defined by a leachate collection compartment upper surface;
- a leakage collection compartment having an upwardly facing inlet opening defined by a leakage collection compartment upper surface;
- wherein the leachate collection compartment inlet opening is disposed below an opening formed in the upper liner and is in fluid communication with the leachate collection layer of geonet;
- and
- wherein the leakage collection compartment inlet opening is disposed below an opening formed in the lower liner and is in fluid communication with the leakage collection layer of geonet.
A collection vessel for a landfill leachate collection apparatus, the landfill leachate collection apparatus including a leachate collection portion and a leakage collection portion, the collection vessel comprising:
- a leachate collection compartment comprising a bottom and a plurality of walls defining an interior surface, and an upwardly facing inlet, through which leachate flows from said leachate collection portion into said collection compartment and said inlet, having an upper sealing surface adapted for sealing connection with the leachate collection portion;
- and
- a leakage collection department comprising a bottom and a plurality of walls defining an interior surface, and an upwardly facing inlet opening having an upper sealing surface adapted for sealing connection with the leakage collection portion;
- and,
- a grate disposed across each of the leachate collection compartment and leakage collection compartment inlet openings.
The collection vessel of claim 16, wherein the plurality of walls of the leachate collection compartment and the plurality of walls of the leakage collection compartment include a common wall.
A landfill comprising:
- a ground stratum having a generally planar portion graded to have a slope toward an edge and having a trench formed along the edge;
- a lower liner disposed above the generally planar portion and trench;
- a leakage collection layer of geonet disposed over the lower liner;
- an upper liner disposed over the leakage collection layer of geonet;
- a leachate collection layer of geonet disposed over the upper liner;
- a layer of geotextile filter fabric disposed over the leachate collection layer of geonet;
- a layer of drainage media disposed over the layer of geotextile filter fabric;
- a layer of solid waste disposed over the layer of drainage media;
- a leachate collection compartment having an upwardly facing inlet opening defined by a leachate collection compartment upper surface;
- a leakage collection compartment having an upwardly facing inlet opening defined by a leakage collection compartment upper surface;
- wherein the leachate collection compartment inlet opening is disposed below an opening formed in the upper liner within the trench and is in fluid communication with the leachate collection layer of geonet;
- and
- wherein the leakage collection compartment inlet opening is disposed below an opening formed in the lower liner within the trench and is in fluid communication with the leakage collection layer of geonet.
A leachate collection apparatus for a landfill disposed over a subjacent stratum, the leachate collection apparatus comprising:
- an upper liner disposed over the subjacent stratum;
- a leachate collection layer of geonet disposed over the upper liner;
- a leachate collection compartment having an upwardly facing inlet opening defined by a leachate collection compartment upper surface, and said compartment having a bottom and a plurality of walls connected to said bottom and upper surface, defining an interior of the compartment isolated from said stratum;
- wherein the leachate collection compartment inlet opening is disposed below an opening formed in the upper liner and is in fluid communication with the leachate collection layer of geonet.
A collection vessel for a landfill, the landfill including a leachate collection liner having an outlet opening formed therein, the collection vessel comprising:
- a leachate collection compartment, having a plurality of walls and a bottom, defining an interior of the compartment isolated from a structure subjacent said landfill;
- an inlet opening, through which leachate flows over said leachate liner and into said leachate collection compartment, formed in the leachate collection compartment and adapted for alignment with the collection liner outlet opening;
- and
- an upwardly facing sealing surface disposed about the inlet opening and adapted for forming a seal thereon.
A landfill leachate collection apparatus comprising:
- a liner adapted for being disposed over a subjacent stratum;
- an outlet opening formed in the liner;
- a collection apparatus having an inlet aligned below the liner outlet opening, through which leachate flows into said collection apparatus over said liner, and having an upwardly facing sealing surface disposed about the inlet, and said collection apparatus having a bottom connected to a plurality of upright walls, defining an interior of the compartment isolated from said subjacent stratum;
- and
- a seal formed between the liner and the collection apparatus on the upwardly facing sealing surface.
Dependencies are inferred from the claim text.