Pre-buried elevating landfill gas collecting well

Abstract

The invention relates to a landfill gas collecting well which is used for collection of garbage landfill gas. A pre-buried elevating landfill gas collecting well provided by the invention comprises a gas collection pipe and an exhaust pipe, wherein the exhaust pipe is installed at the upper part of the gas collection pipe and is used for connecting a branch exhaust pipe to realize gas collection, a well mouth valve is arranged on the exhaust pipe and is used for controlling negative pressure and collection flow of the landfill gas collecting well, the gas collection pipe is composed of an outer gas collection pipe and an inner gas collection floral pipe, the outer gas collection pipe is composed of an outer gas collection solid pipe at an upper part and an outer gas collection floral pipe at a lower part, and the inner gas collection floral pipe is arranged in the outer gas collection pipe. According to the invention, the pre-buried elevating landfill gas collecting well has a simple structure and reasonable design, the characteristics of a simple process, convenient construction, a fast well forming speed, a mature construction process, strong environmental adaptability and a good gas collection effect are obtained, and low cost and economic benefits are achieved.

Description

technical field [0001] The invention relates to a landfill gas collection well, in particular to a pre-buried lift-type landfill gas collection well for collecting landfill gas from garbage. Background technique [0002] Landfill gas refers to the gas generated by microbial anaerobic digestion and degradation of a large amount of organic matter contained in the accumulated or landfilled municipal solid waste during the landfill process. Landfill gas is a kind of mixed gas. Its generation and release are determined by the components of the garbage, the moisture status of the garbage dump, the temperature of the garbage, the pH value, the meteorological conditions, the age of the garbage, the structure of the garbage dump, and the environmental geology and other conditions. . [0003] Under normal circumstances, landfill gas can be released in many ways: on the one hand, it can diffuse to the atmosphere through the surface of the landfill; Horizontal and horizontal migration...

AI Technical Summary

Problems solved by technology

[0004] At present, most waste-to-energy projects basically use shafts to collect landfill gas, but the shaft has a disadvantage. When the garbage in this layer reaches the specified height, the garbage needs to continue to be raised upwards. At present, the existing gas-gathering shafts are facing being destroyed. This will not only result in the waste of people, property, and materials, but also lead to a short period of blank time in the collection of landfill gas, which will cause a large amount of landfill gas to be directly dissipated into the air.

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