C - Chemistry – Metallurgy – 02 – F
Patent
C - Chemistry, Metallurgy
02
F
134/35, 362/47
C02F 5/10 (2006.01) C02F 1/52 (2006.01) C02F 1/54 (2006.01)
Patent
CA 1291001
ABSTRACT A composition and method are described for flocculating and removing solids suspended in water using an inorganic component containing iron, aluminum, or a mixture thereof in combination with a tannin-based flocculant produced by reacting a condensed tannin with an amino compound and an aldehyde. The tannin-based flocculant is preferably the product of a controlled reaction in which the viscosity is monitored as an indication of suitable shelf life.
500477
Kelly David W.
Paul Stewart N.
Waller John E.
Betzdearborn Inc.
Gowling Lafleur Henderson Llp
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