Gas extraction and injection pipeline leakage detection method and system for aerobic repairing of landfills

Abstract

The invention belongs to the technical field of aerobic repairing of landfills, and specially provides a gas extraction and injection pipeline leakage detection method and system for aerobic repairing of landfills. The method comprises the following steps: detecting leakage of a gas main pipeline, detecting leakage of gas collection station pipeline, and detecting leakage of gas branch pipeline. By combining the aforementioned three-step operation conclusions, a construction personnel can do field investigation, so that the gas extraction and injection pipelines having some problems can be accurately positioned. By adopting the method disclosed by the invention, the problem that positive pressure leakage detection cannot be performed because a gas guiding perforated pipe communicates with the outside after mounting of pipelines is finished can be solved, and the operability is high; the requirement on performance of the equipment is low, states of the pipelines can be effectively judged, and the states of the pipelines can be confirmed; under the situation of less input of staffs, the shorter time can be spent, positions of pipelines having some problems can be accurately positioned, and leakage detection of the pipelines is realized.

Description

technical field [0001] The invention belongs to the technical field of aerobic remediation of garbage landfills, and in particular relates to a leak detection method and system for an aerobic remediation gas injection pipeline of a garbage landfill. Background technique [0002] The aerobic remediation technology of landfill is to inject air into the garbage dump by setting up gas injection and liquid injection systems in the landfill, and refill the collected leachate and other liquids into the garbage dump. The organic matter in the pile can be quickly degraded by the action of aerobic microorganisms under the appropriate oxygen content, temperature and humidity conditions, and the time for garbage decomposition can be shortened. At the same time, the carbon dioxide and other gases in the garbage dump are removed through the air extraction well, and the water vapor and heat generated by the aerobic reaction are brought out. Compared with the closed site restoration techno...

AI Technical Summary

Problems solved by technology

[0003]At present, domestic research on aerobic landfill remediation technology mainly focuses on the effect of different operating conditions on the effect of aerobic accelerated stabilization, most of which are Although laboratory simulation and technical research started earlier, engineering applications have only begun in recent years, which has brought a large number of engineering problems to be solved urgently

During the construction of the gas injection system, a large number of gas delivery pipelines need to be laid in the landfill. The construction of other sub-projects may cause damage to the gas injection pipelines. At the same time, the landfill gas extracted from the garbage dump in winter The entrained water vapor may also condense on the pipes and cause pipe blockages

The gas injection system is the core technology to accelerate the stability of the garbage dump. The gas pipeline is buried underground or in the well. Due to the particularity of the pipeline installation and construction, it is impossible to perform a pressure test after the pipeline is installed. It often takes a lot of time to invest in damage and blockage. Leak detection and repair with manpower, making it difficult for the system to continue to operate effectively, affecting the construction period and effect of aerobic repair of landfills, has become the primary problem restricting the accelerated stabilization of landfills

Images