Nippon Steel Corporation

Iwao Jiki Kogyo Co., Ltd.

Takaharu Fujii

Masahiro Fujii

Osamu Miki

Takehisa Muronaga

A fixing carrier for fixing an activated sludge employed in a sewage or waste-water treatment in which: a clay, containing kaolinite minerals, of from 10 to 40 parts by weight and a foaming agent of from 5 to 20 parts by weight are blended with a granulated blast furnace slag of from 60 to 90 parts by weight in the presence of water to prepare a wet mixture which is kneaded and shaped into a shaped mixture; and said shaped mixture is baked at a baking temperature of less than 950.degree. C. at maximum, with the proviso that each of a heat-up time required of said shaped mixture to reach said baking temperature for producing a baked product and a heat-down time required of said baked product to reach a temperature of up to 100.degree. C. is about one hour.

Fixing carrier for activated sludge in sewage or waste water treatment

A fixing carrier for fixing an activated sludge employed in a sewage or waste-water treatment in which

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Nishimatsuura, Japan

Takaharu Fujii