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US 4,228,003 AGranted
Method of removing phosphates from waste water
AssigneeTakeda Chemical Industries, Ltd.
InventorYutaka Makino
Life of this patent
Estimating the term…
Abstract
Removal of phosphates from waste water can be attained with improved efficiency and at low cost by admixing the waste water with seawater and adjusting the mixture to pH 9-11 to separate the sedimental phosphates. The sediment can be utilized as phosphatic fertilizer.
Claims6
A method of removing phosphates from waste water which comprises admixing the waste water with seawater in a volume ratio of 95:5 to 50:50 and adjusting the mixture to pH 9-11 with an alkaline agent to separate the sedimental phosphates by way of coagulation.
Dependencies are inferred from the claim text.