(JP9056372-A)      Bioreactor comprises mainly, treatment vessel (2) in which water to be treated is stored, microorganism fixed beds (22) in which non-cohesive microorganism is fixed in porous support to treat water by action of microorganism, and rotary body (32) to rotate microorganism fixed beds (22) in vessel (2) where they are immersed in water to be treated.    USE/ADVANTAGE -   Used to treat water from fermentation processes or environmental waste water, which contains enzymes, non-fixed microorganisms, etc. Contact between fixed microorganism and water to be treated can be made uniformly, resulting in increase in contact efficiency. In an example, treatment vessel is formed in funnel shape having central part projecting downwards, having opened top. Inner cylinder having dia. smaller than that of treatment vessel is arranged in treatment vessel and fixed to frames to form upward flow passage on inside of treatment vessel. Discharge port is provided at centre of funnel-shape bottom, and is normally closed by valve. Rotary body has support plates, provided on shaft to support microorganism fixed beds.    (US5728577-A)      A bioreactor comprises: (i) a treatment tank for receiving liq. to be treated; (ii) 1 porous-bodied carrier member immobilised with non-agglutinative microorganisms for treating the liq.; and (iii) a drive unit for moving the carrier member in the tank.    PREFERRED BIOREACTOR - The drive unit comprises a power unit, and a support unit coupled to the power unit and retaining 1 carrier member. The support unit is rotated when the power unit is energised, so rotating the carrier member. The support unit comprises a stem coupled to the power unit and a support disk mounted on the stem and retaining 1 carrier member. The stem and the disk are rotated when the power unit is energised, so rotating the carrier member along an orbital path about the stem.    USE -   The bioreactor is used for biologically treating industrial or household sewage, or for treating or fermenting liq. contg. stuff materials.    ADVANTAGE -   The bioreactor increases the effective contact between immobilised non-agglutinated microorganisms and the liq. to be treated, increasing effectiveness and treatment capacity.    (EP761605-B1)      A bioreactor comprises: (i) a treatment tank for receiving liq. to be treated; (ii) 1 porous-bodied carrier member immobilised with non-agglutinative microorganisms for treating the liq.; and (iii) a drive unit for moving the carrier member in the tank.    PREFERRED BIOREACTOR - The drive unit comprises a power unit, and a support unit coupled to the power unit and retaining 1 carrier member. The support unit is rotated when the power unit is energised, so rotating the carrier member. The support unit comprises a stem coupled to the power unit and a support disk mounted on the stem and retaining 1 carrier member. The stem and the disk are rotated when the power unit is energised, so rotating the carrier member along an orbital path about the stem.    USE -   The bioreactor is used for biologically treating industrial or household sewage, or for treating or fermenting liq. contg. stuff materials.    ADVANTAGE -   The bioreactor increases the effective contact between immobilised non-agglutinated microorganisms and the liq. to be treated, increasing effectiveness and treatment capacity.