FLUX CHAMBER DESIGN AND OPERATION FOR THE MEASUREMENT OF MUNICIPAL SOLID-WASTE LANDFILL GAS EMISSION RATES

This paper describes a hybrid Flux Chamber-Soil Gas Probe methodology for measuring municipal solid waste (MSW) gas emission rates. Following the design of the flux chamber, the chamber was laboratory tested to define its mixing characteristics and optimum operating parameter values. Flux chamber operating parameters included: chamber pressure, sweep air flow rate, landfill surface insertion depth, and sweep air velocity. Optimum operating parameter values were determined by operating the flux chamber on a simulated subsurface emission source and varying the operating parameters. The laboratory tests indicated that the flux chamber could be operated to provide zero blasing of gas emission rates, resulting in accurate measurement of gas emission rates.