C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
C02F 3/28 (2006.01) B01D 21/02 (2006.01) C02F 1/00 (2006.01)
Patent
CA 2510276
Disclosed is a circulating sewage/waste water purification device that improves purification efficiency of a first septic tank, improves maintenance and purification efficiency of a second septic tank, and simply exchanges a sewage 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 tank 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 plurality of unit septic tanks deposited, each including an outer cylinder portion provided with a plurality of air vents and a funnel shaped inner cylinder portion having an opened upper surface and a plurality of sewage/waste water through holes at the lower surface.
Kim Sae Chang
Perley-Robertson Hill & Mcdougall Llp
LandOfFree
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