Dyestuff waste water purification
this invention relates to the purification and clarification of a dyestuff and pigment colored waste water by contacting said waste water with an effective amount of a condensation product of formaldehyde and dicyandiamide, and an electrolyte, to coagulate said dyestuff, and removing the resultant coagulate from the waste water.
Description
Patent History
Patent number: T965001
Type: Grant
Filed: Feb 15, 1977
Date of Patent: Dec 6, 1977
Inventors: John N. Carbone (Greensboro, NC), George S. Dominguez (Greensboro, NC), Jayanti V. Isharani (Greensboro, NC)
Application Number: 5/768,915
Type: Grant
Filed: Feb 15, 1977
Date of Patent: Dec 6, 1977
Inventors: John N. Carbone (Greensboro, NC), George S. Dominguez (Greensboro, NC), Jayanti V. Isharani (Greensboro, NC)
Application Number: 5/768,915
Classifications
Current U.S. Class:
210/52;
210/54;
210/96R
International Classification: C02B 120;
International Classification: C02B 120;
