MENUFACTURING METHOD OF ARTIFICIAL SOIL AND SLUDGE SOLIDIFIED AGENT

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PURPOSE : A manufacturing method of an artificial soil is provided to reduce the water content of sludge by using the porosity and absorption of a sawtooth wave form particle and to improve solidifying strength of an artificial soil by using a gypsum-based stimulator. CONSTITUTION : A manufacturing method of an artificial soil comprises : a step of manufacturing a sludge solidifying agent containing a sewage sludge incineration ash of which the total content of SiO2, Al2O3, and Fe2O3 is 30-80% and the pH is 5-10; a step of mixing 5-80 parts by weight of the sludge solidifying agent into 100.0 parts by weight of the sewage sludge; and a step of curing the mixture of the sewage sludge and the sludge solidifying agent. The sludge solidifying agent additionally comprises 1-30 parts by weight of a blast furnace slag micropowder and 1-30 parts by weight of petroleum cokes calcium sulfate based on 100.0 parts by weight of the sewage sludge incineration ash.