NOVELTY - A combined biogas processor comprises desulfurizing tower, biogas inlet installed on side edge of lower end of desulfurizing tower, drain valve installed at bottom of desulfurizing tower, biogas outlet installed at upper end of desulfurizing tower, filter core installed between biogas inlet and biogas outlet, filter material which is filled in filter core, pressure pump with exhaust hole and gas-sucking hole, buffer tank with gas inlet and gas outlet, and substrate with screw holes.    USE - A combined biogas processor.    ADVANTAGE - The processor can be installed neatly, reduces floor area, is convenient to operate, and has reduced manufacturing cost.    DETAILED DESCRIPTION - A combined biogas processor comprises desulfurizing tower, biogas inlet installed on side edge of lower end of desulfurizing tower, drain valve installed at bottom of desulfurizing tower, biogas outlet installed at upper end of desulfurizing tower, filter core installed between biogas inlet and biogas outlet, filter material which is filled in filter core, pressure pump with exhaust hole and gas-sucking hole, gas-sucking hole which is connected with biogas outlet of desulfurizing tower by pipe, buffer tank with gas inlet and gas outlet, gas inlet which is connected with exhaust hole of pressure pump by pipe, and substrate with screw holes. The desulfurizing tower, pressure pump and buffer tank are fixed on substrate by screws. The buffer tank comprises outer barrel which has gas inlet, gas outlet, drain valve, and inner barrel. The gas inlet is installed on side face of upper end of outer barrel. The gas outlet is installed at the top of outer barrel. The drain valve is installed at the bottom of outer barrel. The inner barrel is fixed at the top of outer barrel. The periphery at the upper end of inner and upper end of outer barrel are sealed. The middle of upper part of inner barrel is connected with gas outlet of outer barrel. A silk-screen foam-removing filter is installed in inner barrel horizontally. The bottom of inner barrel is connected with outer barrel.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of combined biogas processor.