Compositions – Water-softening or purifying or scale-inhibiting agents – Plant or organic material containing
Patent
1986-08-19
1988-03-29
Wax, Robert
Compositions
Water-softening or purifying or scale-inhibiting agents
Plant or organic material containing
252 85, 252175, C02F 512
Patent
active
047342161
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.
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Search Report, British Patent Office; for GB Application No. 8,623,459; Nov. 18, 1986; 1 page.
"Wastewater Treatment Plant Design"; Water Pollution Control Federation/American Society of Civil Engineers; 1977; pp. 159-176, 200.
"Condensed Tannins for Adhesives"; Antonio Pizzi; 1982; Ind. Eng. Chem. Prod. Res. Dev., vol. 21, No. 3; pp. 359-369.
"Betz Handbook of Industrial Water Conditioning"; Eighth Edition 1980; pp. 24-31.
Kelly David W.
Paul Stewart N.
Waller John E.
Dearborn Chemical Company Limited
Heiser David E.
Wax Robert
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