METHOD FOR TREATING ORGANIC WASTE WATER

摘要

A METHOD AND APPARATUS ARE DISCLOSED FOR TREATING AN ORGANIC WASTE WATER WHICH ARE CAPABLE OF UTILIZING COMPACT EQUIPMENT BY REDUCING THE QUANTITY OF A SLUDGE TO BE TREATED. ORGANIC WASTE WATER (A) IS SUBJECTED TO AN AEROBIC BIOLOGICAL TREATMENT IN A BIOLOGICAL TREATMENT TANK. (3). THEN, SOLUTION (B) OBTAINED BY THE TREATMENT IN THE BIOLOGICAL TREATMENT TANK (3) IS SOLID-LIQUID SEPARATED INTO TREATED WATER (C) AND SLUDGE (D) IN PRECIPITATION TANK (5). A PORTION OF THE SLUDGE (D) SEPARATED IN THE PRECIPITATION TANK (5) IS RETURNED TO THE BIOLOGICAL TREATMENT TANK (3) THROUGH A ROUTE (6). A PORTION (E) OF THE SLUDGE SEPARATED IN THE PRECIPITATION TANK (5) IS CONCENTRATED BY A CONCENTRATION DEVICE (8). THEREAFTER, THE CONCENTRATED SLUDGE (E) IS SOLUBILIZED BY THERMOPHILIC BACTERIA IN A SOLUBILIZING TANK (10).