A centralized landfill pit for urban domestic waste and its landfill method

Abstract

The invention discloses a concentrated landfill pit for urban domestic garbage and a landfill method thereof, comprising a pit body, the side and bottom of the pit body are provided with an anti-seepage layer, and the inside of the pit body is sequentially provided with a filter screen and activated carbon from bottom to top. filter layer, loamy sand layer, deinked sludge layer and sand layer; in addition, the present invention also discloses a corresponding landfill method; the present invention can control the phenomenon of stench emission during landfill, and reduce the leakage of waste Reduce the difficulty and cost of liquid treatment, reduce the landfill cycle, and facilitate the collection and reuse of landfilled waste.

Description

technical field [0001] The invention relates to the technical field of domestic waste landfill, in particular to a centralized landfill pit for urban domestic waste and a landfill method thereof. Background technique [0002] With the rapid development of urbanization, a large amount of garbage is produced. Among the future crises predicted by the world's authoritative scientists, the garbage problem is one of them. A large amount of garbage damages the ecology and pollutes the environment, seriously affecting human life. For garbage disposal, the main method of garbage disposal in most countries including China is sanitary landfill. However, due to the mixed collection of domestic garbage in our country, the output of domestic garbage is large, and the moisture content and organic matter content of landfill garbage are high. Years of operating experience show that the traditional anaerobic sanitary landfill has the following outstanding problems: First, the leachate has a...

AI Technical Summary

Problems solved by technology

For garbage disposal, the main method of garbage disposal in most countries including China is sanitary landfill. However, due to the mixed collection of domestic garbage in our country, the output of domestic garbage is large, and the moisture content and organic matter content of landfill garbage are high. Years of operating experience show that the traditional anaerobic sanitary landfill has the following outstanding problems: First, the leachate has a large output, high pollution load, low biodegradability, difficult treatment and high cost, and poses a serious threat to groundwater and surface water; The landfill gas production rate is low, the process is long, the collection and utilization is difficult, and the greenhouse gas emission is increased. Especially in the area where the leachate is not well guided, the gas guide pipe is often blocked due to the infiltration of the leachate, which further reduces the landfill gas. The third is that the land use efficiency is low and the land occupation is large; the fourth is that the degradation of organic matter is slow, the garbage stabilization time is long, and continuous supervision and maintenance are required after the site is closed; the fifth is that there is no biological cover in the landfill area, resulting in Odor gas is directly discharged into the air, causing serious odor pollution

[0003] Due to the long landfill cycle of domestic waste landfills, during the landfill period, the garbage will emit bad smell and breed a large number of mosquitoes and flies; light garbage such as plastic bags in the garbage fly with the wind to pollute and damage the environment

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