Carbapenem-resistant bacteria over a wastewater treatment process: Carbapenem-resistant Enterobacteriaceae in untreated wastewater and intrinsically-resistant bacteria in final effluent

2021 ◽  
pp. 146892
Author(s):  
S. Araújo ◽  
M. Sousa ◽  
M. Tacão ◽  
R.A. Baraúna ◽  
A. Silva ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Treatment Process ◽  
Resistant Bacteria ◽  
Wastewater Treatment Process ◽  
Untreated Wastewater ◽  
Carbapenem Resistant ◽  
Final Effluent ◽  
Carbapenem Resistant Enterobacteriaceae

Possible impact of treated wastewater discharge on incidence of antibiotic resistant bacteria in river water

2001 ◽  
Vol 43 (2) ◽  
pp. 91-99 ◽  
Author(s):  
T. Iwane ◽  
T. Urase ◽  
K. Yamamoto
Keyword(s):  
Wastewater Treatment ◽  
River Water ◽  
Wastewater Treatment Plant ◽  
Treatment Process ◽  
Treatment Plant ◽  
Treated Wastewater ◽  
Resistant Bacteria ◽  
Wastewater Discharge ◽  
Wastewater Treatment Process ◽  
Antibiotic Resistant

Escherichia coli and coliform group bacteria resistant to seven antibiotics were investigated in the Tama River, a typical urbanized river in Tokyo, Japan, and at a wastewater treatment plant located on the river. The percentages of antibiotic resistance in the wastewater effluent were, in most cases, higher than the percentages in the river water, which were observed increasing downstream. Since the possible increase in the percentages in the river was associated with treated wastewater discharges, it was concluded that the river, which is contaminated by treated wastewater with many kinds of pollutants, is also contaminated with antibiotic resistant coliform group bacteria and E.coli. The percentages of resistant bacteria in the wastewater treatment plant were mostly observed decreasing during the treatment process. It was also demonstrated that the percentages of resistance in raw sewage are significantly higher than those in the river water and that the wastewater treatment process investigated in this study works against most of resistant bacteria in sewage.

scholarly journals Survival of Helicobacter pylori in the wastewater treatment process and the receiving river in Michigan, USA

2016 ◽  
Vol 14 (4) ◽  
pp. 692-698 ◽  
Author(s):  
Xiaohui Bai ◽  
Chuanwu Xi ◽  
Jianfeng Wu
Keyword(s):  
Helicobacter Pylori ◽  
Wastewater Treatment ◽  
Treatment Process ◽  
Culture Media ◽  
Treatment Plant ◽  
Resistant Bacteria ◽  
Wastewater Treatment Process ◽  
Ann Arbor ◽  
Huron River ◽  
H Pylori

Contaminated water may play a key role in the transmission of Helicobacter pylori, resulting in gastrointestinal diseases in humans. The wastewater treatment process is an important barrier to control the transmission of H. pylori. However, the presence and viability of H. pylori in the treatment process is not well known. In this paper, the real colony morphology of H. pylori was confirmed by two types of culture media. The survival of H. pylori through the tertiary wastewater treatment process, especially UV disinfection, and in the receiving Huron River in Ann Arbor, Michigan, was investigated by plates cultivation, regular polymerase chain reaction (PCR) assays and quantitative real-time PCR from DNA. The results demonstrated that H. pylori was not only present, but also viable in all processed wastewater samples in the Ann Arbor wastewater treatment plant (WWTP). H. pylori can be found in a higher concentration in the receiving Huron River. There are many kinds of antibiotic- and UV-resistant bacteria, including H. pylori, in the final effluent of Ann Arbor WWTP.

scholarly journals Pollution characteristics and fate of microfibers in the wastewater from textile dyeing wastewater treatment plant

2018 ◽  
Vol 78 (10) ◽  
pp. 2046-2054 ◽  
Author(s):  
Xia Xu ◽  
Qingtong Hou ◽  
Yingang Xue ◽  
Yun Jian ◽  
LiPing Wang
Keyword(s):  
Wastewater Treatment ◽  
Textile Industry ◽  
Treatment Process ◽  
Wastewater Treatment Plants ◽  
Treatment Plant ◽  
Wastewater Treatment Process ◽  
Textile Dyeing ◽  
Average Abundance ◽  
Final Effluent ◽  
Textile Dyeing Wastewater

Abstract Wastewater discharged from wastewater treatment plants (WWTPs) is suspected to be a significant contributor of microplastics (MPs) to the environment, and fiber is the main shape of MPs in wastewater effluent. A typical textile industry WWTP with 30,000 tons of daily treatment capacity was sampled for microfibers at different stages of the treatment process to ascertain at what stage in the treatment process the microfibers are being removed. The average abundance of microfibers was 334.1 (±24.3) items/litre in influent, and it reduced to 16.3 (±1.2) items/litre in the final effluent with a decrease of 95.1%. Despite this large reduction we calculated that this textile industry WWTP was releasing 4.89 × 108 microfibers including microplastic fibers and non-microplastic fibers into the receiving water every day. This study showed that a modest amount of microplastics being released per litre of effluent could result in significant amounts of fibers entering the environment, despite the fact that efficient removal rates of microplastic fibers and non-microplastic fibers were achieved by this modern treatment plant when dealing with such a large volume of effluent. The fate of fibers is described during the textile industry wastewater treatment process.

Comparison of F-specific bacteriophage, enterococci, and faecal coliform densities through a wastewater treatment process employing oxidation ponds

1995 ◽  
Vol 31 (5-6) ◽  
pp. 85-89 ◽  
Author(s):  
S. J. Turner ◽  
G. D. Lewis
Keyword(s):  
Wastewater Treatment ◽  
Treatment Process ◽  
Faecal Coliform ◽  
Indicator Organisms ◽  
Faecal Coliforms ◽  
Wastewater Treatment Process ◽  
Oxidation Pond ◽  
Oxidation Ponds ◽  
Specific Bacteriophage

Over a 12 month period F-specific bacteriophages, faecal coliforms and enterococci were compared as microbial indicator organisms for the quality of a wastewater treatment (oxidation pond) system. Results suggest that enterococci may be the most useful indicator for oxidation pond systems.

Sign in / Sign up

Export Citation Format

Share Document