| 摘要 |
<p>PURPOSE:To anaerobically treat an org. waste water contg. sulfate ion while maintaining high BOD load and BOD removing rate by methane fermentation. CONSTITUTION:An org. waste water contg. sulfate ion is anaerobically treated by methane fermentation in a treating tank 1. The gas generated from the tank is desulfurized in a desulfurization tank 8 and introduced continuously and quantitatively into a liq. in the treating tank through a diffuser 10 and circulated, and the hydrogen sulfide concn. in the gas is decreased below 10,000ppm. Consequently, the concn. of the hydrogen sulfide deteriorating the activity of methanogen is lowered above 70mg/L, and high BOD load and BOD removing rate are simultaneously maintained.</p> |
