Dynamic two-way guide and drainage control method for leachate and landfill gas
First Claim
1. A dynamic two-way guide and drainage control method for leachate and landfill gas, which is used in a waste landfill and is characterized in that a plurality of main pipes are pre-buried on a bottom of the waste landfill;
- the waste landfill respectively communicates with a landfill gas bottom collection system and a leachate collection system through the plurality of the main pipes, wherein the landfill gas bottom collection system comprises a vacuum pump positioned out of the waste landfill, and a gas discharging pipe penetrated into the bottom of the waste landfill and communicating the vacuum pump with the plurality of the main pipes;
the leachate collection system comprises a guiding-discharging pipe penetrated into the bottom of the waste landfill and communicating with the plurality of the main pipes; and
the guiding-discharging pipe is positioned below the gas discharging pipe and is provided with a control valve thereon;
the method comprises;
a. determining a current landfilling stage of the waste landfill, wherein the landfilling stage comprises a landfilling initial stage, a landfilling middle stage and a landfilling later stage; and
b. according to the determined current landfilling stage of the waste landfill, performing corresponding pretreatment on a waste body in the waste landfill and selecting the landfill gas bottom collection system and the leachate collection system to respectively enter a corresponding working state, wherein each of the working states is an open state or a closed state.
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Abstract
Provided is a dynamic two-way guide and drainage control method for leachate and landfill gas. The dynamic two-way guide and drainage control method is used in a waste landfill. By implementing the present invention, the water-guiding permeability inside the waste body is improved, and the problems that the water level of the leachate is raised, the landfill gas is escaped, the collection efficiency is extremely low and the like during a waste landfilling process at present are solved.
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Citations
10 Claims
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1. A dynamic two-way guide and drainage control method for leachate and landfill gas, which is used in a waste landfill and is characterized in that a plurality of main pipes are pre-buried on a bottom of the waste landfill;
- the waste landfill respectively communicates with a landfill gas bottom collection system and a leachate collection system through the plurality of the main pipes, wherein the landfill gas bottom collection system comprises a vacuum pump positioned out of the waste landfill, and a gas discharging pipe penetrated into the bottom of the waste landfill and communicating the vacuum pump with the plurality of the main pipes;
the leachate collection system comprises a guiding-discharging pipe penetrated into the bottom of the waste landfill and communicating with the plurality of the main pipes; and
the guiding-discharging pipe is positioned below the gas discharging pipe and is provided with a control valve thereon;the method comprises; a. determining a current landfilling stage of the waste landfill, wherein the landfilling stage comprises a landfilling initial stage, a landfilling middle stage and a landfilling later stage; and b. according to the determined current landfilling stage of the waste landfill, performing corresponding pretreatment on a waste body in the waste landfill and selecting the landfill gas bottom collection system and the leachate collection system to respectively enter a corresponding working state, wherein each of the working states is an open state or a closed state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- the waste landfill respectively communicates with a landfill gas bottom collection system and a leachate collection system through the plurality of the main pipes, wherein the landfill gas bottom collection system comprises a vacuum pump positioned out of the waste landfill, and a gas discharging pipe penetrated into the bottom of the waste landfill and communicating the vacuum pump with the plurality of the main pipes;
Specification