C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
362/4
C02F 3/30 (2006.01) C02F 3/04 (2006.01) C02F 3/06 (2006.01) C02F 3/28 (2006.01)
Patent
CA 1198837
SEWAGE SYSTEM FOR THE TREATMENT OF SEGREGATED DOMESTIC WASTE WATER ABSTRACT OF DISCLOSURE Separating domestic waste water for aerobic filtration of black water and subsequently combining the filtration with grey water provides a convenient source of carbon and anaerobic matter for biological dentrifi- cation of nitrates in a filtration system of anaerobic atmosphere achieved biologically through normal decom- position. Improved filter means for the black water includes alternating layers of stone and sand, the latter being well ventilated to maintain at least slight acidity (pH=4).
437731
Laak Rein
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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