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Process for purifying effluents containing proteins
| Details |
Inventors: Marfurt, Hans-Rudolf; Zurrer, August;
Assignee: Ciba-Geigy Corporation (Ardsley, NY)
Primary Examiner: Therkorn; Ernest G.
Assistant Examiner:
Attorney, Agent or Firm: Roberts; Edward McC., Spitals; John P., Glynn; Michael W.
A process for purifying effluents which contain proteins, which process comprises treating said effluents with a basic polymer compound and separating the flocks that are formed from the effluent. |
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DETAILED DESCRIPTION What we claim is: 1.
A process for purifying effluents containing proteins which process comprises treating said effluent with a basic water-soluble aminoplast flocculant which is a formaldehyde-dicyandiamide condensation product, to flocculate said proteins, agglomerating the resulting flocculated proteins by electrolysis in the presence of a sacrificial aluminum or aluminum alloy anode and an electrically conductive cathode, and removing the resulting agglomerated and flocculated proteins from said effluent.
2.
A process according to claim 1, wherein the basic polymer is a condensation product of formaldehyde, dicyandiamide and one or more of the components consisting of urea, alkylenepolyamine and ammonium chloride.
3.
A process according to claim 1, wherein the basic polymer is a condensation product of formaldehyde, dicyandiamide and ammonium chloride.
4.
A process according to claim 1, wherein the basic polymer is a condensation product of formaldehyde, dicyandiamide, ethylenediamine and ammonium chloride.
5.
A process according to claim 1, wherein the effluents are treated at a pH value of 5 to 10.
6.
A process according to claim 1, wherein the effluents are treated at a pH value of 6 to 9.
7.
A process according to claim 1, wherein the basic polymer is used in a concentration of 2 to 10 g per liter of effluent.
8.
A process according to claim 1, wherein the basic polymer compound is used in a concentration of 3 to 6 g per liter of effluent.
9.
A process according to claim 1, wherein the electrodes consist of an anode of aluminium or an aluminium alloy and of a cathode of iron, copper, nickel or stainless steel.
Description:
The present invention provides a process for treating effluents which contain proteins.
The process consists in treating the effluents with a basic nitrogen-containing polymer compound and separating the flocks which have formed from the effluent.
Sources of waste water effluents which contain proteins are for example gelatin factories, photographic plants, breweries, malt-houses, leather factories and also abatteirs
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