| 摘要 |
<p>The invention relates to a method for producing biogas in a process of anaerobic methane fermentation of organic sludge in a fermentation tank. In order to obtain high yield of biogas production and to render a biogas production independent on a composition of organic sludge being processed, the method comprises the steps of: a) measuring contents of biogas, methane and optionally metals in the fermentation tank; b) determining a proportion of constituents and amount of a fermentation catalyst comprising a mixture of a methanol, glycerol and optionally further additive constituents and a moment for adding such a catalyst on the basis of the measurements carried out in the previous steps a); c) adding the previously determined catalyst to the fermentation tank in the previously determined moment; d) introducing fresh organic sludge into the fermentation tank, wherein at least one first cycle of steps a)-c) is carried out until a state of stabilization of biogas production is achieved and then at least one second cycle of steps a)-c) is carried out. In the first cycle the catalyst comprises methanol in amount of 20 to 25 % by wt, glycerol in amount up to 5 % by wt., fatty acids in amount up to 5 % by wt. and water, whereas in the second cycle after achieving a state of stabilization of biogas production it comprises methanol in amount of 10 to 15 % by wt., glycerol in amount of 20 to 25 % by wt., fatty acids in amount of 3 to 10 % by wt. and water.</p> |
