The objective of this study was the assessment of the environmental and agronomic sustainability of the urban wastewater reuse for irrigation of energy biomass. The monitoring of GHG emission was applied to a wastewater treatment plant characterized by treatment schemes for controlled removal, able to remove pathogens and dangerous components for the environment, but able to release nutrients useful for fertigation of energy crops. Numerical simulations were carried out by implementing the ASM1 model. The developed model is able to estimate GHG emissions due to: biological treatment of wastewater; sludge production; energy consumption for variation of changing plant configurations and management; agronomic recovery of nutrients released by partial treatment. The innovative feature of this study is the assessment of energy and environmental sustainability. The objective is the assessment of evolution of greenhouse gas emissions to changes of treatment schemes that are possible to adopt for a better reuse of wastewater for energy crops irrigation. The model created allows us to evaluate a GHG balance in a wastewater treatment plant for direct discharge into receiving water body, associated with practices of reuse for irrigation of energy crops with the proposed low removal schemes, in order to promote further carbon sequestration in soils fertigated.
Fertigation of energy crops with urban wastewater: a model for the GHG emission monitoring for treatment schemes with selective removal
CANIANI, Donatella;MANCINI, Ignazio Marcello;MASI, Salvatore
2011-01-01
Abstract
The objective of this study was the assessment of the environmental and agronomic sustainability of the urban wastewater reuse for irrigation of energy biomass. The monitoring of GHG emission was applied to a wastewater treatment plant characterized by treatment schemes for controlled removal, able to remove pathogens and dangerous components for the environment, but able to release nutrients useful for fertigation of energy crops. Numerical simulations were carried out by implementing the ASM1 model. The developed model is able to estimate GHG emissions due to: biological treatment of wastewater; sludge production; energy consumption for variation of changing plant configurations and management; agronomic recovery of nutrients released by partial treatment. The innovative feature of this study is the assessment of energy and environmental sustainability. The objective is the assessment of evolution of greenhouse gas emissions to changes of treatment schemes that are possible to adopt for a better reuse of wastewater for energy crops irrigation. The model created allows us to evaluate a GHG balance in a wastewater treatment plant for direct discharge into receiving water body, associated with practices of reuse for irrigation of energy crops with the proposed low removal schemes, in order to promote further carbon sequestration in soils fertigated.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
