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Assessing changes in eco productivity of wastewater treatment plants: The role of costs, pollutant removal efficiency, and greenhouse gas emissions

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Academic year: 2020

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Figure

Fig. 1 shows the TFEPC for the 30 WWTPs we assessed from 2014 to 2016 and Fig. 2 illustrates the contribution of inputs, desirable outputs, and undesirable outputs
Fig. 2. Eco-productivity change of inputs, desirable outputs and undesirable outputs from 2014 to 2016 for wastewater treatment plants.
Fig. 3. Eco-technical change of inputs, desirable outputs and undesirable outputs from 2014 to 2016 for  waste-water treatment plants.
Fig. 4. Eco-efficiency change of inputs, desirable outputs and undesirable outputs from 2014 to 2016 for wastewater treatment plants.

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