Abstract
The article analyzes the existing problems associated with the degassing of landfill and the use of landfill gas as an energy resource. Issues related to the composition of the landfill gas are considered. The main reasons for the high nitrogen content in landfill gas are shown. The main measures are highlighted that make it possible to increase the economic attractiveness of the use of landfill gas. A fundamentally new technology of combined fermentation has been proposed, combining the fundamentals of the technologies of “dry” and “wet” fermentation of various substrates. The paper presents the results of using the technology of combined fermentation to increase the efficiency of the active decontamination system of the MSW landfill of WSC Vodino LLC. A significant improvement in the composition of landfill gas was noted, first of all, an increase in the volume fraction of methane and an increase in the average daily volume of recoverable landfill gas by 22%. As a result, the daily production of heat and electricity at the site during the experiment increased by 79.6%. As a side effect in the experiment, a decrease in the height of the horizon of the landfill body was noted by 12.5% and, as a consequence, an increase in the useful capacity of the landfill.
Highlights
IntroductionThe complex for solving problems associated with the degassing of MSW landfills includes both problems associated with the collection, storage and disposal of landfill gas, as well as problems of landfill reclamation [1, 2]
The complex for solving problems associated with the degassing of MSW landfills includes both problems associated with the collection, storage and disposal of landfill gas, as well as problems of landfill reclamation [1, 2].The use of landfill gas in its raw form can be extremely difficult - because of the low methane component, and because of the presence of difficult to separate components, such as nitrogen.Currently, information on the composition of landfill gas, cited in many available domestic and foreign sources, is very different in terms of the volume fraction of nitrogen
To increase the metabolic activity of the microbiological consortium, as well as to reduce the volume fraction of ballast gas impurities and increase the methane component of the landfill gas, in this paper a method based on the technology of combined fermentation was proposed
Summary
The complex for solving problems associated with the degassing of MSW landfills includes both problems associated with the collection, storage and disposal of landfill gas, as well as problems of landfill reclamation [1, 2]. The use of landfill gas in its raw form can be extremely difficult - because of the low methane component, and because of the presence of difficult to separate components, such as nitrogen
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