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Method for landfill gas in-the-field and out-of-the-field combined treatment

A joint treatment and landfill gas technology, applied in the direction of gas fuel, petroleum industry, waste fuel, etc., can solve the problems of landfill gas resource utilization, one-time investment and high operation and maintenance, global greenhouse effect, etc., to save clay Resources and economic costs, the effect of improving the taste of resources and improving the level of resources

Active Publication Date: 2015-11-18
TAIZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The main problems of these off-site pretreatment technologies are: ① The treatment process leads to about 3% methane loss; ② The CO separated from the landfill gas 2 It is often released into the atmosphere, leading to global greenhouse effect; ③ The one-time investment and operation and maintenance are relatively high, which increases the utilization cost of landfill gas
In particular, the high economic cost has become an important factor restricting landfill gas resource utilization

Method used

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  • Method for landfill gas in-the-field and out-of-the-field combined treatment
  • Method for landfill gas in-the-field and out-of-the-field combined treatment

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Embodiment Construction

[0046] Such as figure 1 Shown, in order to realize the landfill gas field of the present invention method-off-site combined treatment device, comprise garbage landfill device and purification packing tower, garbage landfill device is arranged in the landfill site, and purification packing tower is located in garbage filling Buried outside.

[0047] The landfill device includes a shell 1, and the gravel layer 2, the first domestic waste landfill layer 4, the carbon-fixing intermediate layer 5, the second domestic waste landfill layer 6 and the carbon-fixing cover are sequentially arranged in the shell 1 from bottom to top. Layer 7, two adjacent layers are separated by geotextile layer 3, and an air outlet is provided on the top of the shell.

[0048] The ratio of the thickness of the carbon-fixing intermediate layer 5 to the total thickness of the two domestic waste landfill layers is 1:3-3.5; the thickness of the carbon-fixing covering layer 7 is 20-30 cm. Both the carbon-f...

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Abstract

The invention discloses a method for landfill gas in-the-field and out-of-the-field combined treatment. A combined treatment device comprises a landfill device and a purification packing tower. The landfill device is arranged in a landfill site, the purification packing tower is arranged outside the landfill site, the landfill device is filled with fresh household garbage incineration slag particles, so that landfill gas undergoes in-situ purification, and a packing layer formed by weathering household garbage incineration slag particles is arranged in the purification packing tower, so as to further perform adsorption purification treatment on the landfill gas having undergone in-situ purification treatment. The technical means of in-the-field and out-of-the-field combination is adopted, carbon dioxide in the gas is fixed while the landfill gas is purified, and the quality of released gas is improved.

Description

technical field [0001] The invention relates to the technical field of garbage treatment, in particular to an in-field and off-site joint treatment method for landfill gas. Background technique [0002] Landfill is the most important disposal method of urban waste in my country, accounting for more than 70% of the disposal volume. During the landfill process, the degradation of degradable organic matter in the garbage produces a large amount of landfill gas. The main components of landfill gas are methane (50%-65%) and carbon dioxide (30%-40%), and also contain hydrogen sulfide, mercaptans, ammonia, hydrocarbons, chlorides, siloxanes, etc. These gases will pollute the surrounding environment, and may even cause explosion accidents. On the other hand, because landfill gas is rich in methane, it is a kind of biomass energy with high taste. Recycling it can not only reduce polluting gas emissions and air pollution, but also realize resource recovery and create a certain Econ...

Claims

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Application Information

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IPC IPC(8): C10L3/10
CPCY02E50/30
Inventor 姚俊孔庆娜朱华跃蒋茹李鑫
Owner TAIZHOU UNIV
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