| 摘要 |
PURPOSE: Provided is a method for solidifying and stabilizing sewage sludge without odor generation, which is characterized in that sewage sludge is first fermented before solidification. CONSTITUTION: The method comprises the steps of mixing 10 to 60 parts by weight of filler selected from the group consisting of fly ash, soil, bottom ash and their mixture, 100 parts by weight of sewage sludge, and 0.1 to 15 parts by weight of fermentation agent selected from the group consisting of soil yeast, soil down and their mixture; fermenting the mixture obtained in the first step for 1 to 6 days at 50 to 120 deg.C to convert ammonia in sewage sludge into nitric acid; adding 0.5 to 30 parts by weight of solidification agent selected from the group consisting of cement, quick lime, calcium silicate aluminate and their mixture, and ageing. |
