NOVELTY - Removal device of carbon dioxide and hydrogen sulfide in biogas comprises raw material gas tank, gas compressor, gas buffering tank (3), absorption tower (4), liquid enrichment tank (5), heat exchanger, blower, regeneration tower (6), water pump (9), barren liquor tank (10) and filter device (11); and liquid outlet at bottom of regeneration tower connected with liquid inlet at bottom of barren liquid tank, and air outlet of the blower connected with air inlet at bottom of regeneration tower.    USE - Removal device of carbon dioxide and hydrogen sulfide in biogas.    ADVANTAGE - The device is simple, convenient to operate, and promotes methane content by 97-99%.    DETAILED DESCRIPTION - Removal device of carbon dioxide and hydrogen sulfide in biogas comprises raw material gas tank, gas compressor, gas buffering tank (3), absorption tower (4), liquid enrichment tank (5), heat exchanger, blower, regeneration tower (6), water pump (9), barren liquor tank (10) and filter device (11); outlet of raw material gas tank connected with air inlet at bottom of gas buffering tank, air outlet on top of the gas buffering tank connected with air inlet at bottom of absorption tower, and air outlet on the top of the absorption tower connected with air inlet in filter device; liquid outlet at the bottom of the barren liquid tank connected with liquid inlet on top of the absorption tower by the water pump, liquid outlet at the bottom of the absorption tower connected with liquid inlet of the liquid enrichment tank, and lower side of the liquid enrichment tank connected with liquid inlet on top of regeneration tower by heat exchanger; and liquid outlet at bottom of regeneration tower connected with liquid inlet at bottom of barren liquid tank, and air outlet of the blower connected with air inlet at bottom of regeneration tower. An INDEPENDENT CLAIM is included for removal of carbon dioxide and hydrogen sulfide in biogas comprising charging biogas to gas buffering tank until pressure at 0.8-1.2 MPa, feeding biogas in buffering tank to absorption tower from bottom in 400-600 L/hour, maintaining pressure at 0.8-1.2 MPa, injecting water in barren liquid tank from top of absorption tower by pump at 100-200 L/hour and spraying downwardly by filling and redistributor; feeding water with carbon dioxide and hydrogen sulfide to liquid enrichment tank from bottom of absorption tower, cooling water in liquid enrichment tank at 18-20 degrees C by pressure difference and entering to regeneration tower, and flowing regenerated water to barren liquid tank by bottom of regeneration tower for recycle; and removing other foreign matters by filter device from purified biogas exhausted from top of the absorption tower and removing free water in biogas by condensing and dehydrating system to obtain standard gas.    DESCRIPTION OF DRAWING(S) - The drawing shows a plan view of the removal device of carbon dioxide and hydrogen sulfide in biogas.    Gas buffering tank (3)    Absorption tower (4)    Liquid enrichment tank (5)    Regeneration tower (6)    Water pump (9)    Barren liquor tank (10)    Filter device (11)