| 摘要 |
<p>PURPOSE:To perform the efficient anaerobic treatment of an org. waste material, by mounting a sludge blanket type org. acid fermentation tank and a methane fermentation tank having a fluidized bed comprising biological carrier particles and for applying anaerobic treatment to the treated liquid of the fermentation tank. CONSTITUTION:An org. waste material is introduced into an org. acid fermentation tank 1 from a raw water pipe 4 in an upwardly directed stream to form a sludge blanket 3 and anaerobic treatment of an acid forming phase is performed. The treated water is sent to a methane fermentation tank 2 and th generated gas is collected in a gas chamber 8 to be exhausted to a gas tank from an exhaust pipe 9. The treated liquid of the org. acid fermentation tank 1 enters the methane fermentation tank 2 from a communication pipe 7 through a recirculation route 11 and, after passes a fluidized bed 10 in an upwardly directed stream, recirculated through the recirculation route 11 to receive treatment. In the methane fermentation tank 2, methane is formed from an org. acid by the action of methane producing bacteria collected by the fluidized bed 10.</p> |
