Patent ID: 6942809
Filing Date: 2005-09-13
Classification: C02F

Abstract:
1. A process for treating soybean refinery waste water, comprising: (a) admixing an aqueous iron salt solution with soybean refinery wastewater to form a iron salt-wastewater mixture, wherein the aqueous iron salt solution is combined with the soybean refinery wastewater in a ratio of from about 1:1 to about 0.01:1; (b) agitating the iron salt-wastewater mixture for a time of less than about 10 minutes; (c) passing the agitated iron salt-wastewater mixture through at least one filter device to form a filtered effluent, wherein the filter device is a structured sand bed; and (d) adjusting the pH of the filtered effluent to below about 8 to form purified water, wherein the purified water contains less than about 10 ppm iron and has a transmittance rating of at least about 90 percent.