Emerging investigators series: revisiting greenhouse gas mitigation from conventional activated sludge and anaerobic-based wastewater treatment systems

2018 ◽  
Vol 4 (11) ◽  
pp. 1739-1758 ◽  
Author(s):  
Siming Chen ◽  
Moustapha Harb ◽  
Pooja Sinha ◽  
Adam L. Smith
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Greenhouse Gas ◽  
Anaerobic Treatment ◽  
Greenhouse Gas Mitigation ◽  
Formation Mechanisms ◽  
Conventional Activated Sludge ◽  
Wastewater Treatment Systems

Elucidation of N2O formation mechanisms in aerobic-based wastewater treatment is essential for effective greenhouse gas mitigation, whereas mainstream anaerobic treatment requires improved methane recoverability.

scholarly journals Optimization of wastewater treatment plant operation for greenhouse gas mitigation

2015 ◽  
Vol 163 ◽  
pp. 39-48 ◽  
Author(s):  
Dongwook Kim ◽  
James D. Bowen ◽  
Ertunga C. Ozelkan
Keyword(s):  
Wastewater Treatment ◽  
Greenhouse Gas ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Greenhouse Gas Mitigation ◽  
Plant Operation

scholarly journals LCA of a Membrane Bioreactor Compared to Activated Sludge System for Municipal Wastewater Treatment

Membranes ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 421
Author(s):  
Dimitra C. Banti ◽  
Michail Tsangas ◽  
Petros Samaras ◽  
Antonis Zorpas
Keyword(s):  
Wastewater Treatment ◽  
Life Cycle ◽  
Activated Sludge ◽  
Membrane Bioreactor ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Treatment Plant ◽  
Real Data ◽  
Municipal Wastewater Treatment ◽  
Conventional Activated Sludge

Membrane bioreactor (MBR) systems are connected to several advantages compared to the conventional activated sludge (CAS) units. This work aims to the examination of the life cycle environmental impact of an MBR against a CAS unit when treating municipal wastewater with similar influent loading (BOD = 400 mg/L) and giving similar high-quality effluent (BOD < 5 mg/L). The MBR unit contained a denitrification, an aeration and a membrane tank, whereas the CAS unit included an equalization, a denitrification, a nitrification, a sedimentation, a mixing, a flocculation tank and a drum filter. Several impact categories factors were calculated by implementing the Life Cycle Assessment (LCA) methodology, including acidification potential, eutrophication potential, global warming potential (GWP), ozone depletion potential and photochemical ozone creation potential of the plants throughout their life cycle. Real data from two wastewater treatment plants were used. The research focused on two parameters which constitute the main differences between the two treatment plants: The excess sludge removal life cycle contribution—where GWPMBR = 0.50 kg CO2-eq*FU−1 and GWPCAS = 2.67 kg CO2-eq*FU−1 without sludge removal—and the wastewater treatment plant life cycle contribution—where GWPMBR = 0.002 kg CO2-eq*FU−1 and GWPCAS = 0.14 kg CO2-eq*FU−1 without land area contribution. Finally, in all the examined cases the environmental superiority of the MBR process was found.

Fate of Terpene Compounds in Activated Sludge Wastewater Treatment Systems

1999 ◽  
Vol 49 (6) ◽  
pp. 734-739 ◽  
Author(s):  
Franklin R. Alvarez ◽  
Glenn M. Shaul ◽  
E. Radha Krishnan ◽  
Daniel L. Perrin ◽  
Maqsud Rahman
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Wastewater Treatment Systems

Estimation of greenhouse gas emissions from municipal wastewater treatment systems in India

2017 ◽  
Vol 31 (4) ◽  
pp. 537-544
Author(s):  
Vipin Singh ◽  
Harish C. Phuleria ◽  
Munish K. Chandel
Keyword(s):  
Wastewater Treatment ◽  
Greenhouse Gas Emissions ◽  
Greenhouse Gas ◽  
Municipal Wastewater ◽  
Municipal Wastewater Treatment ◽  
Gas Emissions ◽  
Wastewater Treatment Systems

Fate and effect of naphthenic acids on oil refinery activated sludge wastewater treatment systems

2013 ◽  
Vol 47 (1) ◽  
pp. 449-460 ◽  
Author(s):  
Teresa Misiti ◽  
Ulas Tezel ◽  
Spyros G. Pavlostathis
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Naphthenic Acids ◽  
Oil Refinery ◽  
Wastewater Treatment Systems

Anaerobic digestion: impact of future greenhouse gases mitigation policies on methane generation and usage

2005 ◽  
Vol 52 (1-2) ◽  
pp. 39-47 ◽  
Author(s):  
P.F. Greenfield ◽  
D.J. Batstone
Keyword(s):  
Nitrous Oxide ◽  
Wastewater Treatment ◽  
Greenhouse Gases ◽  
Greenhouse Gas ◽  
Wastewater Treatment Plants ◽  
Carbon Tax ◽  
Treatment Plant ◽  
Greenhouse Gas Mitigation ◽  
Plant Design ◽  
Ghg Mitigation

The debate as to whether carbon dioxide, methane, nitrous oxide and other greenhouse gas emissions will become subject to increasing regulation, increased restrictions, and probably to some form of carbon tax, has moved from a simple “yes” or “no” to “when”. Wastewater treatment plants will be significantly impacted by increased energy costs and by specific regulations and/or penalties associated with emissions of methane and nitrous oxide. In this paper, the greenhouse gases emissions of different wastewater process options are estimated. The paper outlines the increasing need for wastewater treatment plants to factor greenhouse gas mitigation issues into their medium- as and long-term strategies, and identifies anaerobic enhouse as processes as being at the core of such strategies. Further, the paper identifies a number of key research challenges to be addressed if such strategies are to play a larger role in attenuating the likely impacts of GHG mitigation requirements on wastewater treatment plant design and operation.

scholarly journals Occurrence of fungi degrading aromatic hydrocarbons in activated sludge biocenoses

2014 ◽  
Vol 31 (1) ◽  
pp. 67-75
Author(s):  
Anna Grabińska-Łoniewska ◽  
Tomasz Słomczyński ◽  
Elżbieta Pajor ◽  
Katarzyna Kołosowska
Keyword(s):  
Wastewater Treatment ◽  
Activated Sludge ◽  
Aromatic Hydrocarbons ◽  
Soil Bioremediation ◽  
Exhaust Gases ◽  
Anaerobic Wastewater Treatment ◽  
Aerobic And Anaerobic ◽  
Wastewater Treatment Systems ◽  
Gases Purification

A set of 21 strains of yeast-like microorganisms isolated from biocenoses of aerobic and anaerobic wastewater treatment systems were assayed for their ability to utilize aromatic hydrocarbons as a sole C-source. Basing on the achieved results, the highly biochemically active strains for application in enhancing of wastewaters and exhaust gases purification as well as soil bioremediation were selected.

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