Dumping method for producing garbage dumping gas by using special garbage filling units

Abstract

A life garbage burying method by using special burying unit to generate gas includes such steps as dividing a burying field into hydrolyzing and gas generating units, setting up the burying volume of a single gas generating unit and the number of gas generating units, building up gas generating units, burying job, methanating for speeding up gas generation, building up running hydrolyzing units, refilling the percolated liquid for hydrolyzing and acidifying the organic substance in garbage, delivering the percolated liquid back to gas generating unit, and sealing. Its advantages are low cost and high gas collecting rate (100%).

Description

technical field [0001] The invention relates to a landfill method for generating landfill gas by using a special landfill unit, which relates to landfill disposal of domestic waste, utilization of landfill gas and leachate treatment technology, and belongs to the field of solid waste treatment and resource utilization. Background technique [0002] Landfill disposal is currently the main technical method for domestic waste disposal. The landfill disposal rate of domestic waste in developed countries in Europe and the United States is greater than 60%, while that in my country is about 90%. Since landfill is currently the cheapest way to dispose of household waste, landfill is still widely used and has considerable vitality. [0003] At present, the mainstream landfill technology used in various countries in the world is sanitary landfill ("Technical Specifications for Sanitary Landfill of Municipal Solid Waste (CJJ17-2004)", Ministry of Constructi...

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Problems solved by technology

[0005] However, while the above-mentioned bioreactor landfill increases the rate of landfill gas production, it still basically uses the landfill gas collection method of sanitary landfill, and only increases the density of collection facilities (vertical collection wells and horizontal collection pipes) to meet There are two problems in the application of this method: 1) It is difficult to achieve a breakthrough in the collection rate of landfill gas

Since the main gas production period of landfill waste occurs in its use stage, the overall (full-life) gas collection rate is also below 50%, thus resulting in the release of a large amount of greenhouse gases, resulting in adverse environmental impacts, and reducing resource utilization

2) Increased construction cost of landfill gas collection facilities

Although the gas production rate per unit landfill volume of bioreactor landfill is higher than that of sanitary landfill, the construction density of gas collection facilities must be increased, so this method will inevitably lead to an increase in landfill construction costs

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