Garbage landfill site multi-layer leachate recirculation pipe network and gas-liquid drainage exchange system

A landfill and exchange system technology, applied in the field of urban waste treatment, to achieve the effects of smooth exhaust and drainage, water saving, and environmental pollution reduction

Inactive Publication Date: 2015-04-01
武汉景弘环境生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the existing technology, after the entire landfill is built, gas injection wells and gas extraction wells are drilled on the surface with a height of more than ten meters or even tens of meters, which will cause Because the garbage dump is compacted, it is difficult to ventilate and water, and the efficiency of aerobic degradation is low
[0005]Chinese patent ZL200910145074-method for comprehensive treatment and utilization of landfill leachate, although this patent proposes to use organic and inorganic membrane technology to treat leachate in landfill method, but the process is relatively complicated, and the cost of reprocessing the concentrated leachate is relatively high
The microorganisms contained in the treated leachate are also not fully utilized

Method used

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  • Garbage landfill site multi-layer leachate recirculation pipe network and gas-liquid drainage exchange system
  • Garbage landfill site multi-layer leachate recirculation pipe network and gas-liquid drainage exchange system
  • Garbage landfill site multi-layer leachate recirculation pipe network and gas-liquid drainage exchange system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] After the landfill site is leveled, the first layer of leachate pipe network is laid out at the bottom according to the design plan. The distance between each pipe is 4 meters, the pipe diameter is 60, and the slope is 3%. At the high end, a large pipe with a pipe diameter of 100 is used. Each pipeline is connected, and a gas-liquid adding pipe is set at the same time. At the lower end, use a pipe with a diameter of 100 to connect each pipe, and connect a leachate storage tank at the same time, and set a pump pipe on the leachate tank. Then, loosely fill the 3m-high mineralized waste first, and then pile up new waste. When the height of the garbage pile reaches 2m, start laying the second layer of leachate pipe network. The structure of the pipe network is the same as that of the first layer. After the pipe network is set up, the garbage is piled up. When the height of the garbage pile reaches 4m, the third layer of leachate pipe network will be laid out. The structure...

Embodiment 2

[0038] The new waste landfill site is selected next to the waste dump, and the existing waste dump is used as a leachate filter. The leachate pipe network layout and construction procedures of the new landfill are the same as in Example 1. The collected high-concentration ammonium nitrogen leachate is transported to the waste landfill, and the original pipe network is used for leachate recharge, so that the effect of removing ammonium nitrogen is better. Then transport the collected low-concentration ammonium nitrogen leachate back to the new landfill, and use the pipe network of the new landfill to recharge the leachate to accelerate the aerobic degradation process of the new landfill and improve the degradation efficiency . Reduce environmental pollution and save the cost of high-concentration ammonium nitrogen leachate treatment.

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Abstract

The present invention discloses a garbage landfill site multi-layer leachate recirculation pipe network and gas-liquid drainage exchange system, which comprises multiply layers of pipe networks, wherein the distance between the two pipe networks is 3-5 m, each layer of the pipe network comprises a plurality of pipelines, the distance between the two pipelines is 3-5 m, the installation slope is 1-3%, diversion holes are arranged on the pipeline at intervals of 1-2 m, the pipelines are communicated at the high ends through large pipelines with 1-3 times the diameter of the pipeline and a vertical gas-liquid adding pipe is arranged, the pipelines are communicated at the lower ends through large pipelines with 1-3 times the diameter of the pipeline and are connected with a leachate storage box, a leachate discharge pump pipe is arranged, and the multiply layers of the pipe networks are completely in a step-by-step manner along with the garbage landfill. According to the present invention, the leachate collected by the leachate storage box is subjected to recirculation through the gas-liquid adding pipe; the garbage landfill site multi-layer leachate recirculation pipe network and gas-liquid drainage exchange system has the multiple adjusting functions of gas injecting, water injecting and gas suction; the leachate is adopted to replace the partial injected water so as to save the water; ammonium nitrogen can be effectively removed and the environmental pollution can be reduced through the leachate recirculation; and with the leachate recirculation, a lot of microorganisms are conveyed, and the aerobic degradation efficiency is improved.

Description

Technical field: [0001] The invention relates to the technical field of municipal garbage treatment, in particular to a leachate recharging multilayer pipe network and a gas-liquid guiding, draining and exchanging system of a garbage landfill. Background technique: [0002] Landfill leachate is a liquid formed by the water contained in the waste itself, the endogenous water generated after the waste is decomposed, and external water (such as atmospheric precipitation). A large number of studies have shown that the operation methods such as leachate recharge and oxygen supply to the landfill can promote the activity of microorganisms and accelerate the degradation and stabilization process of landfill waste. However, the leachate containing ammonium nitrogen has a foul smell, and direct recharging will increase the concentration of ammonium nitrogen in the garbage dump and inhibit the degradation of microorganisms. Therefore, it is necessary to remove ammonium nitrogen b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B1/00C02F9/14
CPCY02W30/30
Inventor 曹万强管炎俊唐年林卓胡志林
Owner 武汉景弘环境生物科技有限公司
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