Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1976-08-06
1978-05-16
Hart, Charles N.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
162 16, 210 54, C02B 120
Patent
active
040897800
ABSTRACT:
Color is removed from paper mill waste waters by treatment with a cationic water soluble polyamine having an average molecular weight of at least 300 at a pH of 2 to 5, preferably 2.5 to 3.5, followed by precipitation with a water soluble anionic or non-ionic organic polymer having an average molecular weight of at least 10,000.
REFERENCES:
patent: 3372129 (1968-03-01), Phillips
patent: 3377274 (1968-04-01), Burke et al.
patent: 3412018 (1968-11-01), Monzie
patent: 3578587 (1971-05-01), Kemmer
Fabri Jon O.
Kemmer Frank N.
Svarz Jerry J.
Cintins Ivars
Hart Charles N.
Johnston Richard L.
Nalco Chemical Company
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