scholarly journals Energy Recovery from Wastewater Treatment Plants in the United States: A Case Study of the Energy-Water Nexus

2010 ◽  
Vol 2 (4) ◽  
pp. 945-962 ◽  
Author(s):  
Ashlynn Stillwell ◽  
David Hoppock ◽  
Michael Webber
Keyword(s):  
United States ◽  
Wastewater Treatment ◽  
Energy Recovery ◽  
Wastewater Treatment Plants ◽  
The United States

scholarly journals Occurrence of SARS-CoV-2 RNA in Six Municipal Wastewater Treatment Plants at the Early Stage of COVID-19 Pandemic in The United States

Pathogens ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 798
Author(s):  
Samendra P. Sherchan ◽  
Shalina Shahin ◽  
Jeenal Patel ◽  
Lauren M. Ward ◽  
Sarmila Tandukar ◽  
...  
Keyword(s):  
United States ◽  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Quantitative Polymerase Chain Reaction ◽  
The United States ◽  
Secondary Effluent ◽  
Untreated Wastewater ◽  
Treatment Processes ◽  
Wastewater Samples

In this study, we investigated the occurrence of Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2) RNA in primary influent (n = 42), secondary effluent (n = 24) and tertiary treated effluent (n = 34) collected from six wastewater treatment plants (WWTPs A–F) in Virginia (WWTP A), Florida (WWTPs B, C, and D), and Georgia (WWTPs E and F) in the United States during April–July 2020. Of the 100 wastewater samples analyzed, eight (19%) untreated wastewater samples collected from the primary influents contained SARS-CoV-2 RNA as measured by reverse transcriptase quantitative polymerase chain reaction (RT-qPCR) assays. SARS-CoV-2 RNA were detected in influent wastewater samples collected from WWTP A (Virginia), WWTPs E and F (Georgia) and WWTP D (Florida). Secondary and tertiary effluent samples were not positive for SARS-CoV-2 RNA indicating the treatment processes in these WWTPs potentially removed SARS-CoV-2 RNA during the secondary and tertiary treatment processes. However, further studies are needed to understand the log removal values (LRVs) and transmission risks of SARS-CoV-2 RNA through analyzing wastewater samples from a wider range of WWTPs.

The Estrogenicity of Biosolids in Four Full-Scale Wastewater Treatment Plants in the United States

2010 ◽  
Vol 2010 (15) ◽  
pp. 2236-2240
Author(s):  
Edward T. Furlong ◽  
James L. Gray ◽  
David M. Quanrud ◽  
Sondra S. Teske ◽  
Kathleen Esposito ◽  
...  
Keyword(s):  
United States ◽  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
The United States ◽  
Full Scale

scholarly journals A survey of crop-derived transgenes in activated and digester sludges in wastewater treatment plants in the United States

2018 ◽  
Vol 77 (7) ◽  
pp. 1810-1818 ◽  
Author(s):  
Courtney M. Gardner ◽  
Carley A. Gwin ◽  
Claudia K. Gunsch
Keyword(s):  
United States ◽  
Antibiotic Resistance ◽  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Antibiotic Resistance Gene ◽  
Antibiotic Resistance Genes ◽  
Transgenic Crops ◽  
The United States ◽  
Transgenic Crop ◽  
Nptii Gene

Abstract The use of transgenic crops has become increasingly common in the United States over the last several decades. Increasing evidence suggests that DNA may be protected from enzymatic digestion and acid hydrolysis in the digestive tract, suggesting that crop-derived transgenes may enter into wastewater treatment plants (WWTPs) intact. Given the historical use of antibiotic resistance genes as selection markers in transgenic crop development, it is important to consider the fate of these transgenes. Herein we detected and quantified crop-derived transgenes in WWTPs. All viable US WWTP samples were found to contain multiple gene targets (p35, nos, bla and nptII) at significantly higher levels than control samples. Control wastewater samples obtained from France, where transgenic crops are not cultivated, contained significantly fewer copies of the nptII gene than US activated and digester sludges. No significant differences were measured for the bla antibiotic resistance gene (ARG). In addition, a nested PCR (polymerase chain reaction) assay was developed that targeted the bla ARG located in regions flanked by the p35 promoter and nos terminator. Overall this work suggests that transgenic crops may have provided an environmental source of nptII; however, follow-up studies are needed to ascertain the viability of these genes as they exit WWTPs.

scholarly journals Concentrations and size distribution of TiO2 and Ag engineered particles in five wastewater treatment plants in the United States

2021 ◽  
Vol 753 ◽  
pp. 142017
Author(s):  
Md Mahmudun Nabi ◽  
Jingjing Wang ◽  
Madeleine Meyer ◽  
Marie-Noële Croteau ◽  
Niveen Ismail ◽  
...  
Keyword(s):  
United States ◽  
Wastewater Treatment ◽  
Size Distribution ◽  
Wastewater Treatment Plants ◽  
The United States
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