NOVELTY - Gasifying and liquefying household garbage and organic waste comprises using the gasifying-liquefying technology to treat the household garbage and the organic waste to effectively prevent formation of contamination including dioxin; where no contamination is discharged during the whole treatment process; and the household garbage and the organic waste are converted into a clean energy source.    USE - The process is useful for gasifying and liquefying household garbage and organic waste (claimed).    ADVANTAGE - The process has no contamination during the whole treatment process.    DETAILED DESCRIPTION - Gasifying and liquefying household garbage and organic waste comprises using the gasifying-liquefying technology to treat the household garbage and the organic waste to effectively prevent formation of contamination including dioxin; where no contamination is discharged during the whole treatment process; and the household garbage and the organic waste are converted into a clean energy source; where it specifically comprises placing the household garbage and the organic waste in a plasma gasifying furnace in absence of oxygen to produce hydrogen rich synthesis gas without containing the oxygen; cooling the hydrogen rich synthesis gas and removing dust for purifying the hydrogen rich synthesis gas, using it as a raw material to convey into a methanol synthesis reactor for catalytically synthesizing the methanol; leading out the methanol to mix with lime water for executing a terminal purification operation; and using calcium hydroxide as absorber to remove contamination and impurity including the dioxin not eliminated in the dust-removal purification process; where the terminal purification operation comprises sufficiently mixing the methanol comprising the contamination and the impurity including the dioxin from the reactor with at least 2 times of the lime water in an enclosed mixer; controlling the temperature of the mixed solution at 40-60 degrees C with operation pressure of 0-1 MPa to make the dioxin, chloride, fluoride, and sulfide exist in ionic form in the mixed solution of the methanol with the lime water; processing chemical reaction of the calcium hydroxide to separately generate calcium chloride, calcium fluoride, and calcium sulfide which are easy to remove for achieving the purification purpose; separating out unreacted gas substance by a separator and returning to the synthesis reactor for circulatory reaction; separating the methanol by a distillation column and purifying the lime water containing the impurity by a hydraulic swirler; and cooling the clean lime water and returning to the mixer for circulatory usage.    DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram of the process for gasifying and liquefying household garbage and organic waste (Drawing includes non-English language text).