SYSTEM FOR REUSING WASTE ANIMAL/VEGETABLE OIL LIQUID

摘要

It is intended to provide a system for reusing a waste animal/vegetable oil liquid which reduces the emission of global warming gas and thus contributes to the prevention of global warming. A system for reusing a waste animal/vegetable oil liquid whereby the waste animal/vegetable oil liquid is clarified by eliminating sand, solids, oil and suspended matters contained therein and the clear water thus obtained is used as service water while the dry cake is used as an auxiliary fuel in a plant. This system comprises conducting a pretreatment of eliminating sand, solids, oil and suspended matters contained in the waste liquid, subjecting the waste liquid to aerobic aeration, adding a neutral inorganic powdery coagulant to the waste liquid and mixing therewith to form flocks, centrifuging the flock-containing waste liquid with a liquid cyclone to thereby eliminate the separated water and obtain a flock concentrate, and then drying the flock concentrate with the solids to give a dry cake. The sand is returned into soil and the oil is reused.