| 摘要 |
<p>Disclosed is a circulating sewage/waste water purification device that improves purification efficiency of a first septic tank, improves maintenanc e and purification efficiency of a second septic tank, and simply exchanges a sewa ge purification material filled in the second septic tank with a new one. The circulating sewage/waste water purification device includes a first septic tank purifying sewage/waste water supplied from a sewage/waste water source, a second septic tank filled with a sewage purification material to purify the sewage/waste water purified by the first septic tank, and a third septic tan k finally purifying the water purified by the second septic tank, the purified water, which has passed through the third septic tank, being again supplied to the sewage/waste water source. The second septic tank is comprised of a pluralit y of unit septic tanks deposited, each including an outer cylinder portion provid ed with a plurality of air vents and a funnel shaped inner cylinder portion having a n opened upper surface and a plurality of sewage/waste water through holes at the lower surface.</p> |
