ON-SITE SLUDGE COMPOSTING METHOD FOR SMALL-SCALE SEWAGE TREATMENT PLANT

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PURPOSE : A method and a device for processing sludge of small scale sewage disposal plant are provided to compost the sludge in site by using sludge of high moisture contents without preprocessing process such as drying or dehydrating. CONSTITUTION : A solid/liquid separation unit(110) divides sludge into solid-liquid. An aerobic fermentation device(122) heats the sludge mixture by heating source in an aerobic state. An post fermenting unit(130) composts the sludge mixture. A selection unit transfers the composted sludge into to a neighboring farmland. The selection device transfers the selected swelling ashes into solid/liquid separation unit. An air pump(150) supplies the air.