| 摘要 |
PURPOSE:To provide a method for treating high concn. org. waste water wherein it is possible to miniaturize a treating tank and to solubilize and decompose a ground solid and to remarkably reduce amounts of excess sludge and undecomposed solid to be aftertreated and to perform org. substance waste water treatment and solid treatment. CONSTITUTION:The waste water treating method comprises a step wherein a water-contg. org. waste is ground in a grinding machine 2, a step wherein the solid of the ground org. waste and a waste water are transferred to a waste liq. storing tank 4, a step wherein a part of the separated solid and the waste water is transferred into an anaerobic decomposition treating tank 9 arranged in series with the waste water storing tank 4 and a step wherein the transferred solid and waste water are brought into contact with an anaerobic microorganism holding bed 10 to perform solubilization and decomposition thereof and in parallel, a step wherein the treated water in the anaerobic decomposition treating tank 9 and the waste water prepd. by solid-liq. separation in the waste water storing tank 4 are treated under an aerobic condition in an aerobic decomposition treating tank 12. |
