Energy Recovery from Wastewater: Life Cycle Comparison of Carbon Removal Technologies Upstream of Autotrophic Nitrogen Removal

2013 ◽  
Vol 2013 (4) ◽  
pp. 416-421
Author(s):  
Lauren B. Stadlera ◽  
Adam L. Smitha ◽  
Ling Caoa ◽  
Nancy G. Lovea ◽  
Lutgarde Raskina ◽  
...  
Keyword(s):  
Life Cycle ◽  
Nitrogen Removal ◽  
Energy Recovery ◽  
Carbon Removal ◽  
Removal Technologies ◽  
Autotrophic Nitrogen Removal

scholarly journals The quest for sustainable nitrogen removal technologies

2003 ◽  
Vol 48 (1) ◽  
pp. 67-75 ◽  
Author(s):  
A. Mulder
Keyword(s):  
Life Cycle ◽  
Energy Consumption ◽  
Nitrogen Removal ◽  
Nitrogen Cycle ◽  
Life Cycle Analysis ◽  
N2o Emission ◽  
Anthropogenic Nitrogen ◽  
Removal Technologies ◽  
The Individual ◽  
Broad Outline

In this paper the sustainability of current available and future nitrogen removal systems has been investigated. For the assessment of the sustainability six indicators were used; sludge production; energy consumption, resource recovery; area requirement and N2O-emission. For the evaluation of the position of the individual nitrogen removal systems in the anthropogenic nitrogen cycle a broad outline for a life-cycle analysis has been presented.

Environmental and energy performances of the Italian municipal solid waste incineration system in a life cycle perspective

2021 ◽  
pp. 0734242X2110039
Author(s):  
Federico Sisani ◽  
Amani Maalouf ◽  
Francesco Di Maria
Keyword(s):  
Life Cycle ◽  
Municipal Solid Waste ◽  
Solid Waste ◽  
Energy Recovery ◽  
Waste Incineration ◽  
Primary Energy ◽  
Municipal Solid Waste Incineration ◽  
Recovery Scheme ◽  
Assessment Approach ◽  
Average Quantity

The environmental and energy performances of the Italian municipal solid waste incineration (MSWI) system was investigated by a life cycle assessment approach. On average the 39 MSWIs operating in Italy in 2018 treated about 6,000,000 Mg of residual municipal solid waste (RMSW) recovering on average from 448 kWh Mg−1 RMSW to 762 kWh Mg−1 RMSW of electricity and from 732 kWh Mg−1 RMSW to 1102 kWh Mg−1 RMSW of heat. The average quantity of CO2eq Mg−1 RMSW emitted ranged from about 800 up to about 1000 depending on the size and on the energy recovery scheme of the facility. Avoided impacts (i.e., negative values) were detected for the kg PM2,5eq Mg−1 RMSW and for human health (disability-adjusted life year Mg−1 RMSW). The determination of the hybrid primary energy index (MJ Mg−1 RMSW) indicated that mainly large size facilities and those operating according to a power and heat energy recovery scheme are effectively able to replace other primary energies by the exploitation of the lower heating values of the RMSW.

Conditions and technologies of biological wastewater treatment in Hungary

2012 ◽  
Vol 65 (9) ◽  
pp. 1676-1683 ◽  
Author(s):  
G. M. Tardy ◽  
V. Bakos ◽  
A. Jobbágy
Keyword(s):  
Wastewater Treatment ◽  
Carbon Source ◽  
Nitrogen Removal ◽  
Wastewater Treatment Plants ◽  
Treatment Temperature ◽  
Low Carbon ◽  
Biological Phosphorus Removal ◽  
Wastewater Quality ◽  
Removal Technologies ◽  
Biological Nitrogen

A survey has been carried out involving 55 Hungarian wastewater treatment plants in order to evaluate the wastewater quality, the applied technologies and the resultant problems. Characteristically the treatment temperature is very wide-ranging from less than 10 °C to higher than 26 °C. Influent quality proved to be very variable regarding both the organic matter (typical COD concentration range 600–1,200 mg l−1) and the nitrogen content (typical NH4-N concentration range 40–80 mg l−1). As a consequence, significant differences have been found in the carbon availability for denitrification from site to site. Forty two percent of the influents proved to lack an appropriate carbon source. As a consequence of carbon deficiency as well as technologies designed and/or operated with non-efficient denitrification, rising sludge in the secondary clarifiers typically occurs especially in summer. In case studies, application of intermittent aeration, low DO reactors, biofilters and anammox processes have been evaluated, as different biological nitrogen removal technologies. With low carbon source availability, favoring denitrification over enhanced biological phosphorus removal has led to an improved nitrogen removal.

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