| 摘要 |
<p>A bioreactor vessel (13) includes an open-ended tank (14) having suspended therein an air supply means (15) adapted to inject air into a liquid (16). The bottom member (17) is sealingly mounted with sidewalls (18), which has open port (20) and, the sidewalls define a constant tank diameter (21). The supply means (15) may include elongated tubular support shaft (22) which includes a longitudinal axis (24) which passes through the longitudinal axis (26) of the tank (14). Hollow riffle tubes (70) are fixedly mounted to shaft (22) for slurry flow which, after flowing through the riffle tube (70), impacts on the slurry (16) contained in the tank (14). Each radial arm (90), supported by support arm (96), extends outwardly from shaft (22) along longitudinal axis (107) and contains diffusers (100), which directs oxygen to the slurry (16). The diffusers include upright rigid frame structure (104) and a membrane fitted face (106). The membrane adheres to the sidewalls (110) whereby each compartment (114) is sealed. Each compartment (114) contains aperture (115) for measuring CO2 concentrations. Fitted on the lower surface of radial arm (90) are scrapers (117) to collect solids. In one construction, radial arm (90) and support (96) are mounted on cylindrical sleeve (121) which is made rotatable with shaft (22). Positioned in the upper region of the tank (14) is the bridge support (112).</p> |
