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In-situ environment restoration system of unstable municipal solid waste landfill

A domestic garbage and environmental restoration technology, applied in the field of environmental restoration, can solve problems such as secondary pollution and impact on the surrounding ecological environment, and achieve the effects of avoiding pollution, reducing possibilities, and improving degradation capabilities

Active Publication Date: 2017-09-29
CHINA CITY ENVIRONMENT PROTECTION ENGINEERING LIMITED COMPANY
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  • Abstract
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Problems solved by technology

After the rapid stabilization of unstable domestic waste landfills, excavation is often required for restoration work. This method inevitably affects the surrounding ecological environment and brings secondary pollution.

Method used

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  • In-situ environment restoration system of unstable municipal solid waste landfill

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0023] Such as figure 1 , An embodiment of the present invention provides an in-situ environmental restoration system for an unstable domestic waste landfill, including a ventilation unit, a pollutant vacuum extraction unit, a leachate extraction unit, and a nutrient solution injection unit.

[0024] Such as figure 1 , the ventilation unit includes a ventilation duct 1 for inserting into the garbage dump and a temperature control device for controlling the te...

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Abstract

The invention relates to an in-situ environment restoration system of an unstable municipal solid waste landfill. The in-situ environment restoration system comprises a ventilation unit, a pollutant vacuum pumping unit, a percolate pumping unit and a nutrient liquid injection unit; the ventilation unit comprises a ventilation pipeline inserted into a waste heap body and a temperature control device for controlling the air temperature; the nutrient liquid injection unit comprises a supply pipeline inserted into the waste heap body and a nutrient liquid storage device connected with the supply pipeline; and part of pumped percolate can be conveyed into the nutrient liquid storage device to be mixed with nutrient liquid. Temperature-suitable air is injected into the waste heap body to adjust the temperature and humidity of waste in the heap body, the living environment of microbial floras is improved, and the degradation vigor of the of microbial floras is stimulated; and part of the pumped percolate is supplied into the nutrient liquid to provide local bacteria for the nutrient liquid, the local bacteria cooperate with additionally-provided bacteria to degrade the waste, and the degradation ability of microorganisms is improved.

Description

technical field [0001] The invention belongs to the technical field of environmental restoration, and in particular relates to an in-situ environmental restoration system for an unstable domestic waste landfill. Background technique [0002] my country's sanitary landfill technology developed relatively late. Before the 1980s, the relevant technical specifications for domestic waste sanitary landfill lagged behind, and a large amount of domestic waste was non-standard landfilled, resulting in many informal domestic waste landfills in my country. These landfills that bury domestic waste occupy a large amount of valuable land. At the same time, during the slow degradation of organic matter in the waste, a large amount of toxic and harmful landfill leachate is produced. This leachate will seriously pollute the groundwater environment around the landfill. Traditionally, it takes more than 50 years for a landfill to become completely stable and harmless. [0003] Foreign develop...

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Application Information

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IPC IPC(8): B09B3/00B09B5/00
CPCB09B5/00B09B3/10
Inventor 张虎成焦婕吴俊锋田靓
Owner CHINA CITY ENVIRONMENT PROTECTION ENGINEERING LIMITED COMPANY
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