A method for detection of landfill leaks

Abstract

The invention discloses a refuse landfill seepage detection method and a detection device. The detection method comprises the following steps: the external side of a refuse landfill is provided with a temperature measurement optical fiber grid which is connected with a temperature measurement host after connection molding; the temperature measurement optical fiber grid is utilized to detect temperature of the external side of the refuse landfill, and a temperature signal is sent to the temperature measurement host; the temperature signal is fused by the temperature measurement host so that temperature detection data are obtained, and the temperature detection data are transmitted to a data terminal; after the temperature detection data are compared with temperature normal data by the data terminal, whether there is leakage in the refuse landfill is judged; and finally a heat source method is utilized to quantitatively analyze a temperature field of a leakage position, and leakage amount is computed. According to the refuse landfill seepage detection method and the detection device, temperature is utilized to act as a tracing physical quantity to investigate seepage of the refuse landfill, and the seepage problem is monitored and researched via measuring water temperature of different positions. Meanwhile, coordinate data and seepage amount of a temperature abnormal position (the seepage position) can be precisely provided.

Description

technical field [0001] The invention relates to a leachate detection method and a detection device, in particular to a leakage detection method and a detection device of a landfill. Background technique [0002] At present, the annual output of urban waste in my country has exceeded 150 million tons, of which 90% are disposed of by landfill. In 2001, the National Environmental Inspection Station conducted surveys and monitoring of 329 domestic waste landfills across the country. 15.6%, secondary pollution of various landfills is common, among which the leakage of leachate leads to the prominent phenomenon of ammonia nitrogen in groundwater exceeding the standard. The life cycle of urban waste landfills generally ranges from ten to several decades, and there is still a maintenance period of about 50 years after the closure. Due to aging equipment, personnel changes, lack of funds and other reasons, the early warning function of the monitoring system will gradually decline, an...

AI Technical Summary

Problems solved by technology

However, the seepage mainly pollutes the soil and groundwater around the landfill. The test results of this invention can only determine whether the geomembrane leaks and the location of the leak, but cannot intuitively see the degree of pollution to the soil or groundwater around the landfill. Including the location and scope of pollution, and the amount of seepage cannot be given

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