公开(公告)号：US5366640A

公开(公告)日：1994-11-22

申请号：US120331

申请日：1993-09-14

申请人： Gordon W. Palm ,  by Marcella W. Palm, Legal Representative ,  R. George Hartig

发明人： Gordon W. Palm ,  by Marcella W. Palm, Legal Representative ,  R. George Hartig

IPC分类号： C02F1/66 ,  C02F1/62

CPC分类号： C02F1/66 ,  C02F2101/006 ,  Y02W10/37 ,  Y10S210/912 ,  Y10S210/915

摘要： Converting wet-process phosphoric acid operations, to minimize and nearly eliminate discharge of contaminants to the environment, by generation, use, and treatment of new and unique process waters. Fluorides and other contaminants soluble under acidic conditions are insolubilized, and substantially all phosphoric acid is recovered. Acid pond water from conventional wet-process phosphoric acid manufacturing is replaced by neutralized gypsum stack water having a pH closely matching that of the surroundings. Both air and ground water contamination are reduced to essentially negligible levels.

摘要翻译： 转化湿法磷酸操作，通过生成，使用和处理新的和独特的工艺水来最大限度地减少和几乎消除污染物排放到环境中。 在酸性条件下溶解的氟化物和其它污染物不溶解，并且基本上全部回收磷酸。 来自常规湿法磷酸制造的酸池水被具有与周围环境密切匹配的pH的中和石膏叠层水替代。 空气和地下水污染都被降低到几乎可以忽略的水平。