scholarly journals Performance Evaluation of Sewage Treatment Plants in Lucknow City

2013 ◽  
Vol 12 ◽  
pp. 80-86 ◽  
Author(s):  
Mansi Tripathi ◽  
S. Singal
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Biogas Production ◽  
Sewage Treatment ◽  
Uasb Reactor ◽  
Sewage Treatment Plants ◽  
Energy And Environment ◽  
Design Value ◽  
Domestic Effluent ◽  
Better Than

The present study was conducted to evaluate the performance of existing sewage treatment plants (STPs) in Lucknow City of India. Currently, two STPs are operating in Lucknow, i.e., UASB reactor and FAB reactor, with total operating capacity of 345MLD and 56MLD, respectively. Since, the wastewater get mix with the domestic effluent while directing towards the STPs, therefore, the concentration of BOD is relatively very low, and hence the amount of biogas production by the UASB reactor is also reduced than its design value. Two approaches, evaluating the treatability performance and Life-Cycle Assessment (LCA) have been used to determine the plants efficiencies. All the results have been interpreted graphically. The results of this study conclude that the UASB reactor is better than the FAB, however in terms of LCA the FAB seems to be more reliable. Hydro Nepal; Journal of Water, Energy and Environment Vol. 12, 2013, January Page: 80-86DOI: http://dx.doi.org/10.3126/hn.v12i0.9039 Uploaded Date : 10/29/2013

Life cycle assessment of different physical-chemical and biological technologies for biogas desulfurization in sewage treatment plants

2018 ◽  
Vol 181 ◽  
pp. 663-674 ◽  
Author(s):  
Patricio I. Cano ◽  
Joan Colón ◽  
Martín Ramírez ◽  
Javier Lafuente ◽  
David Gabriel ◽  
...  
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Sewage Treatment ◽  
Sewage Treatment Plants ◽  
Physical Chemical

The Life Cycle Assessment of Carbon Dioxide Emission of Four Major Sewage Treatment Plants in Taiwan

2015 ◽  
Vol 764-765 ◽  
pp. 1154-1158
Author(s):  
Yu Sheng Chang
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Energy Consumption ◽  
Water Cycle ◽  
Sewage Treatment ◽  
Carbon Dioxide Emission ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Sewage Treatment Plants ◽  
Treatment Stage

The sewage comes from buildings is drained into public sewers. The sewage is then treated in a sewage treatment plant to meet the sanitation standards before being discharged to the water cycle in nature. The sewage treatment process consumes energy and produce CO2. In this research, the idea of streamlined life cycle assessment was applied. The CO2 emission of sewage treatment was assessed from direct energy consumption of four major sewage treatment plants in Taiwan. The results show that the unit CO2 emission of sewage treatment calculated from four plants is 0.174 kg-CO2/m3. The CO2 emission at in-plant sewage treatment stage takes more than 95% of total CO2 emission for most plants. The results suggest that CO2 emission of sewage treatment can be calculated from energy consumption at in-plant sewage treatment stage to simplify the calculation. This database will be important reference for water resource research.

Life Cycle Assessment of an intensive sewage treatment plant in Barcelona (Spain) with focus on energy aspects

2011 ◽  
Vol 64 (2) ◽  
pp. 440-447 ◽  
Author(s):  
L. Bravo ◽  
I. Ferrer
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Anaerobic Digestion ◽  
Environmental Impacts ◽  
Biogas Production ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Pre Treatment ◽  
Energy Aspects

Life Cycle Assessment was used to evaluate environmental impacts associated to a full-scale wastewater treatment plant (WWTP) in Barcelona Metropolitan Area, with a treatment capacity of 2 million population equivalent, focussing on energy aspects and resources consumption. The wastewater line includes conventional pre-treatment, primary settler, activated sludge with nitrogen removal, and tertiary treatment; and the sludge line consists of thickening, anaerobic digestion, cogeneration, dewatering and thermal drying. Real site data were preferably included in the inventory. Environmental impacts of the resulting impact categories were determined by the CLM 2 baseline method. According to the results, the combustion of natural gas in the cogeneration engine is responsible for the main impact on Climate Change and Depletion of Abiotic Resources, while the combustion of biogas in the cogeneration unit accounts for a minor part. The results suggest that the environmental performance of the WWTP would be enhanced by increasing biogas production through improved anaerobic digestion of sewage sludge.

Life Cycle Assessment of Urban Wastewater Treatment

2014 ◽  
Vol 535 ◽  
pp. 346-349
Author(s):  
Mei Wang ◽  
Ming Yang ◽  
Jun Liu ◽  
Jian Fen Li
Keyword(s):  
Wastewater Treatment ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Wastewater Treatment Plant ◽  
Sewage Treatment ◽  
Treatment Plant ◽  
Urban Wastewater ◽  
Urban Sewage ◽  
Urban Wastewater Treatment ◽  
Whole Life Cycle

Effect and benefits of a product or service could be analyzed and evaluated by life cycle assessment during the whole life cycle. Urban sewage treatment plants could improve and control urban water pollution escalating, but it also had certain harm to environment. Effect and benefits of urban wastewater treatment plant A and B were analyzed and evaluated, 13 factors were selected, and comprehensive benefits were researched quantificationally using the method of analytic hierarchy process. It found that urban wastewater treatment plant A who applied A/O process had better benefits than urban wastewater treatment plant B who applied BIOLAK process.

scholarly journals Life Cycle Assessment Overview And Application: Comparison Of Structural Frame Alternatives For Office Buildings

2021 ◽  
Author(s):  
Ivan L. Pinto
Keyword(s):  
Life Cycle Assessment ◽  
Life Cycle ◽  
Primary Energy ◽  
Office Buildings ◽  
Commercial Building ◽  
Concrete Frame ◽  
Impact Indicators ◽  
Canadian Context ◽  
Assessment Strategies ◽  
Better Than

The objective of this project was to provide an overview of Life Cycle Assessment (LCA) and to demonstrate its application as a tool to provide a scientific comparison of alternative construction options for a commercial building in the Canadian context. The work entailed a quantitative assessment of the embodied environmental impacts of typical office buildings using a steel frame, and a concrete frame alternative (and associated components) in Toronto. Through the use of four assessment strategies, this study has indicated that the steel framed building performs better than the concrete building in most impact indicators, excepting primary energy and eutrophication potential. However, additional buildings should be assessed in order to confirm this finding. Furthermore, it was found that the manufacturing phase represents over 90% of the embodied impacts of the whole building. The study also advises caution when comparing different LCA studies and identifies its difficulties.

Use of life cycle assessment to evaluate environmental impacts associated with the management of sludge and biogas

2018 ◽  
Vol 77 (9) ◽  
pp. 2292-2300 ◽  
Author(s):  
Karina Cubas do Amaral ◽  
Miguel Mansur Aisse ◽  
Gustavo Rafael Collere Possetti ◽  
Marcelo Real Prado
Keyword(s):  
Global Warming ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Impacts ◽  
Sewage Treatment ◽  
Upflow Anaerobic Sludge Blanket ◽  
Anaerobic Sludge ◽  
Baseline Scenario ◽  
Low Efficiency ◽  
By Products

Abstract Upflow anaerobic sludge blanket (UASB) reactors used in sewage treatment generate two by-products that can be reused: sludge and biogas. At the present time in Brazil, most of this resulting sludge is disposed of in sanitary landfills, while biogas is commonly burned off in low-efficiency flares. The aim of the present study was to use life cycle assessment to evaluate the environmental impacts from four different treatment and final destination scenarios for the main by-products of wastewater treatment plants. The baseline scenario, in which the sludge was sanitized using prolonged alkaline stabilization and, subsequently, directed toward agricultural applications and the biogas destroyed in open burners, had the most impact in the categories of global warming, terrestrial ecotoxicity, and human non-carcinogenic toxicity. The scenario in which heat resulting from biogas combustion is used to dry the sludge showed significant improvements over the baseline scenario in all the evaluated impact categories. The recovery of heat from biogas combustion decreased significantly the environmental impact associated with global warming. The combustion of dried sludge is another alternative to improve the sludge management. Despite the reduction of sludge volume to ash, there are environmental impacts inherent to ozone formation and terrestrial acidification.

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