| 摘要 |
<p>PURPOSE:To produce and recover a useful organic acid, in high efficiency, by treating waste water containing organic materials with immobilized microorganisms capable of producing the acid. CONSTITUTION:Microorganisms capable of producing an organic acid are included in a gelatinous carrier, and immobilized by conventional immobilization technique. The immobilized microorganisms are proliferated by cultivation, and made to contact with waste water containing organic materials. The cultivation and the contact of the immobilized microorganism with the organic-containing waste water is carried out at 20-45 deg.C and 4-6pH in the case of using a medium- temperature digestion sludge of sewage as the seed sludge, or at 45-60 deg.C and 4-6pH in the case of using a high-temperature digestion sludge. For example, the immobilized microorganisms and waste water are charged to a fermentation tank composed of the jacket 1, the fluidizing zone 2, and the settling zone 3, and the fermentation of the waste water is carried out. The fluidizing zone 2 is furnished with the device 4 to control and display the temperature and pH. The generated gas is separated by the gas-separator 5 and discharged from the reactor.</p> |
