Decomposition device for treating rural domestic waste composting waste gas with biomass

The invention discloses a decomposition device for treating rural domestic waste composting waste gas with biomass, which belongs to the technical field of agricultural waste utilization. The decomposition device comprises: a composting barn in which a leachate collecting pipe is disposed, and on which a biomass processing exhaust pipe is disposed; a leachate collecting pool which is communicated with the leachate collecting pipe. The decomposition device of the invention performs aerobic composting of rural solid waste; the composting temperature is easy to insulate and control; and the waste gas generated during the composting process is processed by using biomass corn cores and straw cores as special gas adsorption materials. The leachate is collected and sprayed back during the composting process, which can not only ensure the water content of the compost, but also realize zero discharge of waste water; the device can perform positive or negative pressure adjustment of the gas in the barn at any time, mak