NOVELTY - Combined treatment of garbage comprises pretreatment of solid domestic garbage by preprocessing solid domestic garbage, pretreating kitchen waste, fruits and vegetables garbage, fecal sewage, and garbage leachate; homogenizing garbage with particle size of less than 5 mm; anaerobic digestion processing; flocculation dewatering; denitrifying the treated sewage; oxidizing; treating by membrane biological reactor; aerobic composting; and biodiesel production.    USE - Combined treatment of garbage (claimed).    ADVANTAGE - The treated sewage meets the third level standard in DB11/307-2005 Water Pollutants Discharge Standard. The method is greatly shortened; and has reduced cost. The marsh gas generated during treatment and recycled waste oil are deeply processed and used as green energy.    DETAILED DESCRIPTION - Combined treatment of garbage comprises: (A) pretreatment of solid domestic garbage by (a) preprocessing solid domestic garbage; packing the sorted plastic product, paper, glass product, and metal garbage; recycling; crushing the sorted organic garbage to obtain particle size of less than 5 mm; and sending the sorted non-recyclable inorganic material in a landfill; (b) pretreatment of kitchen waste by crushing kitchen waste; sieving; screening solids of greater than 70 mm in size and burying in landfill; magnetic separating solid of 5-70 mm in size and vibration sieving; recycling metal; burying the inorganic material; and crushing the organic material into a particle size of less than 5 mm, where discharging cabin, bag crusher, sieve, magnetic separator, vibrator, and crusher are connected with a grid, and the sewage passing through the grid passes through the pipeline heater to be heated at 25-35 degrees C for oil water separation; (c) pretreatment of fruits and vegetables garbage by winnowing fruits and vegetables; recycling plastic bag and metal; and pulping the other wastes; (d) pretreatment of fecal sewage by solid liquid separating; removing the materials with particle size of greater than or equal to 5 mm, where water content of the separated material is 45-70%; and burying the solid; and (e) pretreatment of garbage leachate by removing the floating material and large material in the garbage leachate through 5 mm grid; and burying the floating material and large material; (B) homogenizing pretreated solid domestic garbage with particle size of less than 5 mm, kitchen garbage having particle size of less than 5 mm, pulp liquid having particle size of less than 5 mm, fecal sewage having particle size of less than 5 mm, and garbage leachate having particle size of less than 5 mm; controlling the temperature of the mixture at 60-68 degrees C; and continuously stirring at 500-1000 revolutions/minute (rpm), where total solid (Ts) content in the mixture is 8-12%, pH is 5-9, chemical oxygen consumption amount is 100-300 g/L, and residence time of the mixture in homogenizing pool is 1-6 hours; (C) anaerobic digestion processing the mixture of step (B) in an anaerobic reactor, where anaerobic sewage is 1/4-1/3 of the volume of the anaerobic reactor; performing high temperature fermentation for 15-25 days at 55 plus minus 2 degrees C; degrading the organic material, which is 75-85% of the mixture; converting into marsh gas; dewatering and desulfurizing the marsh gas; storing the marsh gas in gas storage cabinet; detecting the mixture in the anaerobic reactor; when Ts removing rate is greater than 60%, sending the sewage to a storage pool, where residence time of sewage in storage pool is 2-4 hours; sending the marsh gas released from anaerobic reactor and storage pool to the gas storage cabinet; and making 30-60% of sewage from the storage pool as liquid fertilizer for selling; (D) flocculation dewatering by generating solid colloidal substance in sludge floc of sewage from storage pool; and sending the sludge floc to a flocculation reaction tank; (E) denitrifying the treated sewage, where the content of sewage in aerobic denitrification device is 8-12 g/L, the dissolved oxygen in sewage is less than 0.5 mg/L, and the residence time of sewage in denitrification pool is 3-8 hours; (F) oxidation by sending the sewage treated in step (E) to aerobic pool,, where sewage in aerobic pool has temperature controlled at 20-30 degrees C, pH of 7-8.5 (when the pH is less than 7, alkali liquor is added to adjust pH), oxygen content controlled at 2-6 mg/L, and residence time of 8-15 hours to degrade more than 98% of organic material; oxidizing more than 98% ammonia nitrogen into nitrite and nitrate; converting more than 98.5% of phosphorus into aerobic sludge; and returning the rest sludge generated by aerobic sludge to step (D) to flocculate and dewater; (G) membrane biological reactor treatment by sending the treated sludge in step (F) to membrane biological reactor, where sludge in membrane biological reactor has oxygen content controlled at 4-6 mg/L and aerobic sludge content of 8-12 g/L; and forming swirling flow in membrane biological reactor having film pore diameter of less than or equal to 0.1 mu m, where discharge water has chemical oxygen demand (COD) of less than 100 mg/L, average influent biological demand (BOD5) of less than 5, pH of 6-8, and suspended solids is less than 2 mg/L, thus, meeting the third level standard in DB11/307-2005 Water Pollutants Discharge Standard, and where sludge, which is 200-400% of the film processing amount and is not filtered by membrane biological reactor and sewage mixture return to the denitrification pool of step (E); (H) aerobic composting the sludge after flocculating and dewatering step (D), residue having particle size of greater than 5 mm after pulping in step (E) and residue entrapped on sieve hole grid by mixing with auxiliary material (25-35 wt.% of the total weight of the sludge and residue), where sludge and residue have water content of 65-72% and auxiliary material is plant straw, leaves, and/or saw dust having water content of less than 35%, where temperature is 55-65 degrees C; stacking for more than 7 days under aerobic aeration; and overturning once everyday; and (I) biodiesel production by using hydration method to remove impurities and degum the waste oil from step (A); removing impurities and colloidal substance in the waste oil; performing acid catalysis esterification under the catalysis of concentrated sulfuric acid (3% of the waste oil); adding free fatty acid in waste oil and ethanol (15 wt.% of the waste oil); performing alkali catalysis ester exchange reaction by adding sodium hydroxide (0.9% of waste oil) and ethanol (15% of waste oil) to obtain reaction product i.e. biodiesel and glycerol; separating biodiesel from glycerol by centrifuging; washing biodiesel with hot water to remove sodium hydroxide; obtaining crude biodiesel and crude glycerol; rectifying the separated crude biodiesel at - 0.08 MPa and 225-260 degrees C; and obtaining biodiesel.