| 摘要 |
PROBLEM TO BE SOLVED: To obtain satisfactory yeast having improvement effect and to provide a method for biologically treating waste water, with which amount of oils and fats in waste water is reduced by using the cultured yeast, since waste water from a low pH to a high pH discharged by using an acidic cleaning agent or basic cleaning agent for stationary cleaning of production facilities of food, etc., causes a problem, yeast that removes oils and fats in high rate, has resistance to fluctuation of pH and lives together with various bacteria is excepted and a method for biologically treating waste water friendly to the environment not using a chemical substance is demanded. SOLUTION: The yeast belonging to the genus Yarrowia lives together with bacteria and assimilates animal and vegetable oils and fats in high rate under conditions from strong acidity to strong basicity. The method for biologically treating waste water comprises feeding the yeast to oil and fat-containing waste water. COPYRIGHT: (C)2006,JPO&NCIPI
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