| 摘要 |
<p>PURPOSE:To save energy and to reduce running cost by operating equipment at a specified temp. to treat high-temp. waste water and allowing Methanothrix as the methane-forming bacteria important to the self-immobilizing action of anaerobes to take precedence over other bacteria. CONSTITUTION:Waste water 1 is transiently uniformized in a regulating tank 2, then introduced into a cooler 3, cooled therein to about 60-65 deg.C, passed through a dispersion device 5, dispersed and then introduced into a reaction vessel 7. Since the waste water is sent to the reaction vessel 7 at about 60-65 deg.C in this way, the growth of the Methanothrix in waste water is promoted, excellent granulated sludge 8 is formed, and the org. matter in the waste water 1 is decomposed into gaseous methane. The gas is separated and collected in a gas-solid separator 9 end recovered by a gas recovery pipe 9, and the sludge 8 free from the gas is settled as such. The treated waste water 1 is discharged from the reaction vessel 7 as treated water 11.</p> |
