METHOD FOR DISCHARGING TREATED WASTE WATER FOR SMALL-SCALE COMBINED PURIFICATION TREATMENT OF WASTE WATER AND DEVICE FOR ADJUSTING DISCHARGE FLOW RATE OF SMALL-SCALE COMBINED TREATMENT SEPTIC TANK

摘要

PURPOSE:To smoothly treat and discharge waste water flowing in large volume in a relatively short period of time by pumping the treated waste water treated in plural treating tanks into a disinfecting tank, then discharging the water and maintaining the drain surface in the treating tanks at the ordinary time at a low level. CONSTITUTION:If the waste water of night soil or general living waste water flows in large volume in a relatively short period of time, this waste water is stagnated within the range of the high level W1 of the plural treating tanks A, B, C, D exclusive of the disinfecting tank E, by which the waste water is purified. On the other hand, the treated waste water stagnating in the upper layer part of the low level W2 at which the water is subjected to the settling treatment is admitted into a pumping tank F and is transferred to the disinfecting tank E by the pump P1. The treated waste water is transferred to the next disinfecting tank E at a constant rate as far as possible by spending the relatively long period of time in such a manner.