Liquid purification or separation – Processes – Making an insoluble substance or accreting suspended...
Patent
1987-10-08
1988-11-01
Hruskoci, Peter
Liquid purification or separation
Processes
Making an insoluble substance or accreting suspended...
210728, 210730, C02F 154
Patent
active
047818395
ABSTRACT:
Methods 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.
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Kelly David W.
Paul Stewart N.
Waller John E.
Dearborn Chemical Company Limited
Heiser David E.
Hruskoci Peter
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