| 摘要 |
<p>PURPOSE:To produce an optimum microorganism immobilized carrier for waste water treatment by compounding clay and pore forming material with blast furnace granulated slag and molding and calcining the mixture. CONSTITUTION:The clay such as KIBUSH clay is compounded at 0-40pts.wt. and the pore forming material such as sawdust at 5-20pts.wt. with 60-90pts.wt. blast furnace granulated slag having about 40-150mu grain size, then water is added to the mixture and the mixture is kneaded and is molded to the shape of a ring, saddle, etc., by extrusion molding or press molding. The molding is calcined. For example, the max. temp. at the time of the calcination is set at 900 deg.C and the temp. increase up to said temp. and the temp. decrease from said temp. down to <=100 deg.C are respectively executed in about one hour. The calcined matter obtd. in such a manner is optimum as the microorganism immobilized carrier for waste water treatment. The carrier has the excellent affinity to microorganisms and can maintain the microorganisms at a high concn.; further the excess microorganisms are easily removable by washing even if the microorganisms are loaded in the gaps of the immobilized carrier.</p> |
