Diurnal variations in the occurrence and the fate of hormones and antibiotics in activated sludge wastewater treatment in Oslo, Norway

Plósz, Benedek G.; Leknes, Henriette; Liltved, Helge; Thomas, Kevin V.

doi:10.1016/j.scitotenv.2010.01.042

Cited by 102 publications

(72 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Again, the variation in the observed SMX removals may be attributed to differences in: microbial community of the AS systems, treatment plant operation (SRT and HRT), sampling methods (automated vs. grab sampling; frequency), and times (seasonal variation). The results of Joss et al (2005) and Plósz et al (2010) illustrate the potential importance of monitoring the human metabolite N 4 -acetyl-SMX in order to gain a more complete perspective on SMX degradation during WW treatment, which may help to explain the reported differences in removal efficiencies. The importance of sampling strategy in determining accurate estimates of pharmaceutical removals in WWTPs has recently been discussed by researchers, noting that the commonly used 24-h composite samples (with the effluent sampling time shifted by the mean HRT of the treatment system) ignore the mixing regime characteristics, flow, and concentration variability.…”

Section: Removal In Full-scale Wwtps Based On Asmentioning

confidence: 92%

“…Another study measured an increase in SMX concentration after full-scale biological WW treatment, which was attributed to deconjugation processes resulting in SMX being re-formed from its human metabolites. However, this could not be confirmed as the metabolites were not monitored (Plósz et al 2010). The most recent investigation has found that of the 90 % SMX removal achieved overall during conventional WW treatment, approximately 50 % can be attributed to biological treatment/AS with no significant sorption to sludge (Gao et al 2012a).…”

Section: Removal In Full-scale Wwtps Based On Asmentioning

confidence: 98%

See 1 more Smart Citation

Biodegradation of sulfamethoxazole: current knowledge and perspectives

Larcher

Yargeau

2012

Appl Microbiol Biotechnol

121

View full text Add to dashboard Cite

Antibiotic compounds, like sulfamethoxazole (SMX), have become a concern in the aquatic environment due to the potential development of antibacterial resistances. Due to extensive consumption, excretion and disposal, SMX has been frequently detected in wastewaters and surface waters. This has led to numerous studies investigating the nature of SMX, with many researchers focusing on the biodegradation and persistence of SMX during wastewater treatment and in the environment. This review provides a summary of recent developments, outlines the discrepancies in observations and results, and demonstrates the need for further research to determine optimal biological removal strategies for SMX and other antibiotics.

show abstract

Section: Removal In Full-scale Wwtps Based On Asmentioning

confidence: 92%

Section: Removal In Full-scale Wwtps Based On Asmentioning

confidence: 98%

Biodegradation of sulfamethoxazole: current knowledge and perspectives

Larcher

Yargeau

2012

Appl Microbiol Biotechnol

121

View full text Add to dashboard Cite

show abstract

“…The increases of CIP concentration were observed occasionally after AS and CW treatments. Plosz et al (2010) have reported that the efficiency of biological removal of CIP was limited and sorption to sludge was considered as a principal removal pathway for CIP in the AS process Golet et al, 2003), so its desorption from sludge and wetland substrate might cause an increased effluent concentration in the AS and CW processes.…”

Section: Antibiotics Removal In Different Treatment Processesmentioning

confidence: 99%

Occurrence and removal of antibiotics in ecological and conventional wastewater treatment processes: A field study

Dong

Yuan

Wang

et al. 2016

Journal of Environmental Management

151

View full text Add to dashboard Cite

a b s t r a c tThe occurrence and removal of 19 antibiotics (including four macrolides, eight sulfonamides, three fluoroquinolones, three tetracyclines, and trimethoprim) were investigated in two ecological (constructed wetland (CW) and stabilization pond (SP)) and two conventional wastewater treatment processes (activated sludge (AS) and micro-power biofilm (MP)) in a county of eastern China. All target antibiotics were detected in the influent and effluent samples with detection frequencies of >90%. Clarithromycin, ofloxacin, roxithromycin and erythromycin-H 2 O were the dominant antibiotics with maximum concentrations reaching up to 6524, 5411, 964 and 957 ng/L, respectively; while the concentrations of tiamulin, sulfamerazine, sulfathiazole, sulfamethazine, sulfamethizole and sulfisoxazole were below 10 ng/L. Although the mean effluent concentrations of target antibiotics were obviously lower than the influent ones (except ciprofloxacin), their removals were usually incomplete. Principal component analysis showed that the AS and CW outperformed the MP and SP processes and the AS performed better than the CW process in terms of antibiotics removal. Both the AS and CW processes exhibited higher removal efficiencies in summer than in winter, indicating biological degradation could play an important role in antibiotics removal. Because of the incomplete removal, the total concentration of detected antibiotics increased in the mixing and downstream sections of a local river receiving the effluent from a typical wastewater treatment facility practicing AS process. Nowadays, ecological wastewater treatment processes are being rapidly planned and constructed in rural areas of China; however, the discharge of residual antibiotics to the aquatic environment may highlight a necessity for optimizing or upgrading their design and operation.

show abstract

“…Fate (e.g., adsorption, bio-and chemical transformation) and transport of several groups of antibacterials and other pharmaceuticals during wastewater treatment have been well studied through bench-scale laboratory tests as well as in full-scale STPs (Behera et al, 2011;Gobel et al, 2005;Junker et al, 2006;Lindberg et al, 2006;McArdell et al, 2003;Plosz et al, 2010;Radjenovic et al, 2009;Zorita et al, 2009). In contrast, in-depth studies about behavior of the azole antifungals during various treatments in STPs, such as mechanical, biological, and chemical processes, are still lacking in spite of some works about distribution of these compounds in liquid phase Contents lists available at SciVerse ScienceDirect Science of the Total Environment j o u r n a l h o m e p a g e : w w w .…”

Section: Introductionmentioning

confidence: 99%