| 20110127223 | PROCESS FOR TREATING POND WATER - A process for the treatment of phosphoric acid plant pond water where an increased recovery of phosphorus values from the input pond water is achieved through the dilution of the initial pond water with clarified water from the product generation stage and/or the final stage clarified water. The recycle of the product generation stage and/or final stage waters to dilute the feed pond water mitigates or eliminates the problems of silica gel formation and precipitation that occur when undiluted pond waters are processed. In addition, the dilution reduces phosphate losses in the first liming or neutralization stage rejected solids thereby increasing the yield of Di-Calcium Phosphate or ammonium magnesium phosphate or potassium magnesium phosphates. | 06-02-2011 |
