Pre-buried elevating landfill gas collecting well
A lift-type, collection well technology, applied in landfill technology, solid waste removal, etc., can solve the problems of landfill gas escaping into the air, waste of people, money, and materials, buried, demolished, etc. Achieve the effects of simple structure, fast well completion speed and convenient construction
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Embodiment 1
[0017] Embodiment one: see figure 1 , the pre-buried lifting type landfill gas collection well of the present invention includes a gas collection pipe and a gas extraction pipe. The gas collection pipe 3 is installed on the upper part of the gas collection pipe and is used to connect the gas extraction branch pipe for gas collection. The gas extraction pipe is provided with a wellhead valve 4. The wellhead valve is used to control the negative pressure and collection flow of the collection well. The gas collection pipe is composed of the gas collection outer pipe 8 and the gas collection inner flower pipe 7. The gas collection outer pipe 8 is composed of the upper gas collection external The solid pipe and the lower gas collection external flower tube are composed, and the gas collection internal flower tube 7 is arranged in the gas collection outer tube.
Embodiment 2
[0018] Embodiment two: see figure 1 , the pre-embedded lift-type landfill gas collection well of this embodiment is different from Embodiment 1 in that it contains a high-pressure drain pipe 1 and a high-pressure air intake pipe 2, and the high-pressure drain pipe 1 and high-pressure air intake pipe 2 are connected from the upper part of the gas collection pipe. Lift the well head 5 into and extend into the bottom of the gas collection internal flower tube 7, and the high-pressure air inlet pipe 2 is placed at the bottom of the high-pressure drain pipe 1 to discharge the leachate in the gas-collecting well by using air pressure.
Embodiment 3
[0019] Embodiment three: see figure 1 , the pre-embedded lift-type landfill gas collection well of this embodiment is different from Embodiment 1 or Embodiment 2 in that: a lifting flange head 6 is provided at the upper end of the flower tube 7 inside the gas collection, The lower end of the outer flower tube is equipped with 3-6 pieces of lifting bolts 9 apart from the bottom 20-30cm. The length of the lifting bolts 9 is preferably 2-3cm from the outer wall of the gas collection inner flower tube at its end.
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