Landfill methane detection

Speaking of anti-static ground, many people think that only in the electronic plant or pharmaceutical plant and other places of high cleanliness requirements will be applied, few people know, in fact, in garbage disposal sites such as the existence of serious environmental pollution of the region, the ground must also do anti-static treatment. This is because the landfill waste in the long-term storage and decomposition process will produce methane, hydrogen sulfide, carbon monoxide, and other flammable gases, and these flammable gases, especially methane, because of the quality of the air heavier, once the leakage will be sinking, mixed with air on the ground to form a mixture of gases in the event of friction and impact sparks or static discharge sparks may occur when the flash explosion accidents, bringing serious danger to the safety of production. Safety production brings serious danger. At present, all landfill sites at home and abroad will be on the landfill gas in the waste disposal site for testing, especially on the regulation tank, and sewage treatment area of the methane gas to carry out close detection and control, in order to prevent methane leakage or concentration is too high in the event of a spark to produce explosive accidents.

Why do we need to conduct landfill gas testing?

Methane is a flammable and explosive gas. When landfill gas is transferred through soil gaps to areas outside of the landfill, methane levels can be explosive and dangerous once it reaches 5% to 15% of the air.

When carbon dioxide gas from landfills comes into contact with water, it dissolves and forms large amounts of carbonic acid, which can cause groundwater to harden.

In addition, both methane and carbon dioxide are greenhouse gases that cause irreversible damage to the environment. Large quantities of methane and carbon dioxide will accumulate in the roots of plants, leading to a lack of oxygen in the roots, which will affect plant growth as well as the greening effect around the landfill.

Methane, which typically makes up 40 to 65 percent of the gas produced by landfills, is a valuable source of renewable energy. The calorific value of landfill gas can reach 16-19 MJ/Nm3. As we all know, methane is the main component of natural gas, biogas, etc., and it is a common fuel used in people's lives to boil water and cook. If the methane gas produced in landfills can be recycled, it will generate great economic benefits, promote urban development, and save energy.

Of course, it should be noted that before the utilization of landfill gas needs to be purified and filtered out of harmful substances, which requires the use of methane gas concentration monitoring, Fosensor believes that the Catalytic Combustion Methane Sensor FS01200B can be used for monitoring.

Catalytic Combustion Methane Sensor utilizes the principle of the thermal effect of catalytic combustion and consists of a detection element and compensation element paired to form a measurement bridge. When encountering methane, combustible gas is burned on the surface of the carrier of the detection element and under the action of the catalyst, and the temperature of the carrier rises, and the resistance of the platinum wire inside the detector rises accordingly, which will make the balanced bridge lose equilibrium, and output an electric signal that is directly proportional to the concentration of the combustible gas. The output is proportional to the concentration of the combustible gas.