| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a phosphorus recovery method for recovering magnesium ammonium phosphate from a separated liquid obtained by dehydrating digested sludge by subjecting wastewater containing a solid component to anaerobic digestion treatment in a treatment process for organic wastewater containing phosphorus such as sewage, wastewater, excretion or the like, and a phosphorus recovery apparatus therefor. <P>SOLUTION: In a wastewater treatment method having an anaerobic digestion process for anaerobically digesting wastewater containing a solid matter, a solid-liquid separation process for subjecting digested sludge to solid-liquid separation, a process for forming magnesium ammonium phosphate (MAP) from the separated liquid from the solid-liquid separation process and a process for recovering MAP obtained in the MAP forming process, MAP crystal particles present in the digested sludge are separated to be supplied to the MAP forming process. A wastewater treatment apparatus is also disclosed. <P>COPYRIGHT: (C)2004,JPO</p> |
