In this paper carbon footprint is estimated for wastewater treatment plant Constanta South, Romania, by using a combined model from the available protocols for carbon footprint calculation. Off-site and on-site emissions were taken into account. The carbon footprint calculations were based on the operational data regarding power consumptions, sludge, chemicals and biogas production. A prediction for carbon footprint is done for upgrading wastewater treatment plant. For the current plant technology it is found that 0.44-0.54 kg CO2 eq have been released per cubic meter of treated wastewater for 2010-2013 years or 33.08-37.68 [kg CO2eq/PE and year]. For the upgraded plant, taking into account design data and the credit for biogas usage, it is found that the GHG emissions will be reduced at 0.17 kg CO2 eq per m 3 treated wastewater or 32.33 [kg CO2eq/PE and year].
Abstract. Wastewater treatment plants (WWTPs) and drinking water treatment plants (DWTPs) are sources of emissions of greenhouse gases (GHGs), such as carbon dioxide (CO2), nitrous oxide (N2O) and methane (CH4
A wastewater treatment plant's carbon footprint is represented by the amounts associated with collection, treatment and final disposal of treated wastewater and sludge. The importance of evaluating the carbon footprint in wastewater treatment facilities consists in the fact that it's reduction is directly related to energy efficiency measures and plant operation improvements. Considering the fact that, at a national scale, there is a lack in methodologies and solutions for evaluating wastewater treatment plants' carbon footprint, the main international methodologies and tools were studied and the paper presents the main parameters that have to be taken into account during evaluations, as well as the weak and strong points in the studied methodologies.
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