| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a simple method of energy-saving type for recovering phosphoric acid from incineration sludge. <P>SOLUTION: The method for producing phosphoric acid or a salt thereof is characterized by blowing carbon dioxide into an aqueous suspension of the incineration sludge and then carrying out solid/liquid separation to recover the filtrate. <P>COPYRIGHT: (C)2011,JPO&INPIT |
