| 摘要 |
PROBLEM TO BE SOLVED: To provide a wastewater purifying treatment material for removing heavy metals from wastewater efficiently and economically, and a wastewater treatment method. SOLUTION: A fibrous substance is used as a carrier and a reducible ferrous precipitate being a mixture of iron hydroxide and green rust or green rust and iron ferrite is supported on the carrier to obtain a wastewater purifying treatment material. Preferably, the reducible ferrous precipitate comprising a precipitate based on iron hydroxide (II), green rust alone or a mixture of green rust and iron ferrite and characterized in that the ratio [Fe<SP>2+</SP>/total Fe] of divalent iron to total iron is 0.3 or above is supported on the ferrous substance to obtain the wastewater purifying treatment material. As the ferrous substance, an inorganic fiber such as quartz wool, glass wool, rock wool, ceramic wool, steel wool, slag wool and the like or an organic fiber is used and a container communicating with wastewater is filled with the wastewater purifying treatment material. The wastewater treatment method using the wastewater purifying treatment material is also disclosed. COPYRIGHT: (C)2006,JPO&NCIPI
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