C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
362/17
C02F 3/22 (2006.01)
Patent
CA 1057867
PAUL I. RONGVED PROCESS FOR TOTAL SEWAGE TREATMENT Abstract of the Disclosure An improved process for the purification and denitrification of sewage which comprises setting the sewage liquid in motion, aerating the sewage liquid to effect the aerobic decomposition thereof, allowing said aerobic decom- position to continue until substantially the entire oxygen content of said aerated sewage liquid has been depleted, adding additional untreated sewage liquid thereto for the purpose of denitrifying the aerated sewage liquid, and with- drawing said aerated, denitrified sewage liquid for clarification and/or sedimentation and/or recycle; and an apparatus directed thereto which comprises an aeration reservoir fitted with inlet means, agitating means and outlet means, said inlet means being positioned in said reservoir to allow for maximum aerobic decomposition and denitrification.
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