C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
362/57
C02F 1/66 (2006.01) C02F 3/12 (2006.01) C02F 3/30 (2006.01) C02F 11/18 (2006.01)
Patent
CA 2007455
ABSTRACT. The present invention relates to a process at the purification of water, in particular sewage water, comprising a nitrification process and a denitrification process during simultaneous decom- position of a pre-precipitated sludge of sewage water. The in- vention is characterized in that decomposed sludge or solutions of sludge of a chemical pre-precipitation of sewage water is ad- ded as a source of carbon at the denitrification step.
Fetherstonhaugh & Co.
Karlsson Johan L. I.
Kemira Kemi Aktiebolag
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