WASTE WATER TREATING DEVICE

摘要

PURPOSE:To improve the purifying treatment speed of the waste water treating device by an activated sludge method and to decrease the volume of the treating tank. CONSTITUTION:A gaseous mixture composed of air and ozone is aerated by an air diffuser 5 in a contact aeration tank 2 in order to activate aerobic bacteria of an activated sludge method septic tank using only the aerobic bacteria or a septic tank using anaerobic bacterial and the aerobic bacteria in combination. The biological treating speed of waste water is increased by mixing the ozone with the waste water. The size of the treating tank necessary for the prescribed discharging quantity is reduced.