| 摘要 |
<p>PURPOSE:To enhance the disposal efficiency of waste water, to shorten fermentation treatment time and to miniaturize a treating equipment by irradiating waste water mixed with methane fermentation bacteria with light or mixing methane fermentation bacteria with waste water, and furthermore, interposing an optical semiconducter therein and then irradiating this waste water with light. CONSTITUTION:Water 1 to be treated which contains organic waste water is introduced into a reaction tank 5 made of glass wherein methane fermentation bacteria 3 and an optical semiconductor 4 are present though an inlet 2. Light is irradiated from a light source 6 provided to the outside of the reaction tank 5. Treated water 7 digested in the reaction tank 5 is discharged from an outlet 8 and also the produced gas is recovered or discarded through a gas outlet 9. Outflow of the methane fermentation bacteria 3 and the optical semiconductor 4 is prevented by the filters 10 provided to the inlet 2 part and the outlet 8 part. Further, the inside of the reaction tank 5 is agitated by an agitator 11 having an agitation rod made of polytetrafluoroethylene.</p> |
