The estimation of the emission of greenhouse gasses by the treatment of sewage sludge in Latvia
2011
Arina, D., Latvia Univ. of Agriculture, Jelgava (Latvia);Institute of Physical Energetics, Riga (Latvia) | Bendere, R., Institute of Physical Energetics, Riga (Latvia)
The report presents the assessment of emission of greenhouse gases (GHG) generated by the treatment, disposal and storage of sewage sludge in Latvia. The aim of the study was to determine GHG emissions from stored sludge because those were not previously estimated. The proposals for the further reduction of the GHG emissions are elaborated on the provided estimations of different treatment models. The calculations of GHG emissions are conducted by using acknowledged software and data from Latvian Environment, Geology and Meteorology Centre. Data from the year 2005 till 2009 about the amount of stored sludge were used by the authors for mathematical calculations in the year 2010. The long-term storage of sewage sludge and their disposal in landfills were detected as the main sources of GHG. It was detected that the average GHG reduction of 5 Gg per year can be ensured by using biological treatment of sewage sludge.
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