UNITED TREATING PURIFIER

摘要

PURPOSE: Disclosed is a union septic tank for treating sewage. The septic tank is characterized in that air is injected into a pre-treatment tank (74) and a third treating tank (76) through an air pipe (105), thereby wastewater is circulated for dissolving oxygen. Also, a waterwheel (122) of the third treating tank (76) is rotated by inflow air for circulating wastewater. Therefore, wastewater is treated aerobically. CONSTITUTION: The septic tank is characterized by comprising the follow parts: an air pump (104) for supplying air to the air pipe (105); the air pipe (105) equipped with the pre-treating tank (74) and the third treating tank (76); the waterwheel (122) installed at the third treating tank (76) for circulating wastewater. The waterwheel (122) has several propeller-shaped wings. Installation and maintenance of the septic tank are simple. And efficiency for treating wastewater is high.