Refuse landfill quasi aerobiotic ecological restoration method and system

A landfill and ecological restoration technology, applied in the field of landfill restoration methods and restoration systems, to achieve the effects of easy stabilization and restoration, reduced treatment costs, and rapid and complete degradation

Inactive Publication Date: 2019-03-22
BEIJING GUOHUAN TSINGHUA ENVIRONMENT ENG DESIGN & RES INST CO LTD BEIJING CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing treatment methods are simply stacking and landfilling, which bury hidden dangers for future development

Method used

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  • Refuse landfill quasi aerobiotic ecological restoration method and system
  • Refuse landfill quasi aerobiotic ecological restoration method and system
  • Refuse landfill quasi aerobiotic ecological restoration method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] What this embodiment deals with is the Haikou Baishuitang landfill. The area of ​​the landfill is about 120,200 square meters.

[0052] A quasi-aerobic ecological restoration system for landfills, including: leachate collection and recharge systems, gas systems, air extraction systems, gas purification systems, monitoring systems, and control systems; the landfills are also equipped with power and Auxiliary systems include traffic, transportation, power, maintenance, safety protection, etc.

[0053] see figure 1, the leachate collection and recharge system includes a leachate collection ditch, a leachate lift well and a leachate collection tank. The leachate in the garbage dump is collected into the leachate collection ditch through gravity flow, and leachate lifting wells are set at a certain distance on the collection ditch, and a lift pump is installed in the well, and the pump is sent to the leachate collection tank by pump pressure, and recharged after conditioni...

Embodiment 2

[0068] Adopt the system of embodiment 1, the quasi-aerobic ecological restoration method of landfill, comprising:

[0069] injecting water and / or leachate into the dump;

[0070] Use the high temperature environment of the garbage dump to cause a temperature difference between the inside and outside of the dump, and supplement it with an induced draft system or use natural ventilation to promote the formation of a gas pressure difference between the dump and the outside world. After the gas in the dump is collected and processed, it will be discharged from the garbage dump environment; At the same time, fresh gas is introduced into the garbage dump through the air intake system, forming a quasi-aerobic environment inside the garbage dump. The gas in the landfill is pumped out with the gas pumping well, the gas extracted from the landfill is treated, and the gas after treatment is discharged from the landfill;

[0071] Collect (extract) the leachate during operation, store and...

Embodiment 3

[0095] This embodiment deals with the waste landfill in Qizhuang Village, Huairou District. The area of ​​the landfill is about 40,000 square meters, and the landfill volume is about one million cubic meters.

[0096] A quasi-aerobic ecological restoration system for landfill, including: leachate collection and recharge system, gas system, air extraction system, gas purification system, monitoring system, control system, power and auxiliary systems;

[0097] The leachate collection and refilling system includes a leachate collection ditch, a leachate lifting well and a leachate collection tank. The leachate collection ditch is on the side of the landfill, and a leachate drainage flower pipe is set in the ditch, and the outside of the pipe is filled with graded gravel with a particle size of 40-100mm. The site bottom of this project is about 10 meters lower than the ground outside the site, leachate lift wells are set at a certain distance on the leachate collection ditch, and...

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Abstract

The invention discloses a refuse landfill quasi aerobiotic ecological restoration method and system. The refuse landfill quasi aerobiotic ecological restoration method comprises the following steps: filling water and/or percolate in a refuse dump body; utilizing the high temperature environment of the refuse dump body to form the temperature difference in and out of the refuse dump body, air inducing equipment is supplemented or natural ventilation is adopted to form air differential pressure between the refuse dump body and the external world, and after the gas in the refuse dump body is collected and treated in a centralized manner, discharging the gas out of the refuse dump body environment; at the same time, introducing fresh air in the refuse dump body to form a quasi aerobiotic environment in the refuse dump body; and adopting a bleed gas well to pump the gas in the refuse landfill out, and recharging the treated percolate in the refuse dump body. Quasi aerobiotic backfilling provides an advantage for refuse degradation, so that refuse decomposition is faster, the dump body steady speed is accelerated, and stability and repairing of the refuse landfill are facilitated.

Description

technical field [0001] The invention belongs to the field of solid waste treatment, and in particular relates to a repair method and a repair system of a garbage landfill. Background technique [0002] Urban waste landfill is the most important way to solve domestic waste in most cities in my country at present. Using potholes to bury urban waste is an environmental protection measure that can not only dispose of waste, but also cover soil for land use. Garbage landfills usually use the method of layering and covering soil to process garbage, and pile up a layer of garbage and then cover it with a layer of loess. However, the population of contemporary cities is growing rapidly, landfills occupy a large area, and the accumulative accumulation of urban waste in the country has occupied more than 500 million square meters of land, causing economic losses of up to 30 billion yuan. Garbage dumps and even "garbage mountains" have formed around the city. The existing treatment m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B1/00
CPCB09B1/00
Inventor 王迪于诗卓宋磊吕秀芬刘奇林陈蓓张梅马卓然李丽华郭中杰
Owner BEIJING GUOHUAN TSINGHUA ENVIRONMENT ENG DESIGN & RES INST CO LTD BEIJING CHINA
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