MATERIAL FLOW ANALYSIS OF BIOGAS SYSTEMS – AN EXAMPLE OF NITROGEN AND SULPHUR

摘要

Different parameters are used to assess the efficiency of biogas plants. The most common parameters usedin practice are VS destruction and COD reduction. Both parameters indicate the mass conversion of organic matter intobiogas. During anaerobic operation more parameters need to be balanced e.g. nitrogen and sulphur. The mass flowbalance can be used to assess the quality of the operation process based on sampling and analysis. In principle aquantification of mass transfer processes is only feasible with regard to mass flow balances. The anaerobic reactor isconsidered a "black box" with following interfaces: sewer gas, inlet and outlet [20]. The validation of measurements isfacilitated by applying closed balances. In the following the balances of different anaerobic systems will be discussedwith respect to the parameters nitrogen and sulphur and conclusions will be given for optimizing the operation of biogasplants.