Fate and behavior of extended-spectrum β-lactamase-producing genes in municipal sewage treatment plants

2015 ◽  
Vol 50 (11) ◽  
pp. 1160-1168 ◽  
Author(s):  
Taewoo Yi ◽  
Tae Gwan Kim ◽  
Kyung-Suk Cho
Keyword(s):  
Sewage Treatment ◽  
Municipal Sewage ◽  
Sewage Treatment Plants ◽  
Extended Spectrum ◽  
And Behavior ◽  
Fate And Behavior

Presence of Phenolic Compounds in Sewage, Effluent and Sludge from Municipal Sewage Treatment Plants

1982 ◽  
Vol 14 (4-5) ◽  
pp. 143-150 ◽  
Author(s):  
F B DeWalle ◽  
D A Kalman ◽  
R Dills ◽  
D Norman ◽  
E S K Chian ◽  
...  
Keyword(s):  
Sewage Treatment ◽  
Municipal Sewage ◽  
Sewage Effluent ◽  
Capillary Gc ◽  
Digested Sludge ◽  
Calculated Concentration ◽  
Sewage Treatment Plants ◽  
Anaerobically Digested Sludge ◽  
Final Effluent ◽  
Dimethyl Phenol

A total of 25 municipal sewage treatment plants were sampled, 10 of which were resampled, to determine the quantity of phenolics in the sewage, final effluent and the anaerobically digested sludge using capillary GC/MS/DS/techniques. The study noted in decreasing order of frequency in raw sewage: phenol, pentachloro-phenol, dimethyl phenol, 3-methyl, 4-chlorophenol, 2,4,6-trichloro-phenol, 2,4-dichlorophenol, 2-nitrophenol, 2-chlorophenol, 2,4-dinitro-6-methylphenol and 2,4-dinitrophenol. The maximum concentration of phenol in sewage and sludge was 2800 ppb and 4460 respectively, while similar values for pentachlorophenol were 58 and 1200 ppb. Statistically calculated concentration reductions for phenol and dimethyl phenol were generally greater than noted for tri- and pentachlorophenol. Low decreases or increases were noted for monochlorophenol and especially for dichlorophenol as a result of the chloronation of the final effluent.

Removal of estrogenicity in Swedish municipal sewage treatment plants

2003 ◽  
Vol 37 (18) ◽  
pp. 4433-4443 ◽  
Author(s):  
Anders Svenson ◽  
Ann-Sofie Allard ◽  
Mats Ek
Keyword(s):  
Sewage Treatment ◽  
Municipal Sewage ◽  
Sewage Treatment Plants

scholarly journals Antibiotics in two municipal sewage treatment plants in Sri Lanka: Occurrence, consumption and removal efficiency

2019 ◽  
Vol 5 ◽  
pp. 272-278 ◽  
Author(s):  
Dilanka N.D. Samaraweera ◽  
Xin Liu ◽  
Guangcai Zhong ◽  
Tilak Priyadarshana ◽  
Riffat Naseem Malik ◽  
...  
Keyword(s):  
Sri Lanka ◽  
Removal Efficiency ◽  
Sewage Treatment ◽  
Municipal Sewage ◽  
Sewage Treatment Plants

Occurrence of residues of the veterinary drug crystal (gentian) violet in wild eels caught downstream from municipal sewage treatment plants

2008 ◽  
Vol 5 (3) ◽  
pp. 194 ◽  
Author(s):  
Andrea Schuetze ◽  
Thomas Heberer ◽  
Susanne Juergensen
Keyword(s):  
European Union ◽  
Crystal Violet ◽  
Surface Waters ◽  
Gentian Violet ◽  
Sewage Treatment ◽  
Ornamental Fish ◽  
Municipal Sewage ◽  
Oral Exposure ◽  
Veterinary Drug ◽  
Sewage Treatment Plants

Environmental context. Crystal violet (CV), also known as gentian violet, is a triphenylmethane dye used as a veterinary drug for the treatment of ornamental fish infected with the parasitic protozoa Ichthyophthirius multifiliis. CV is a suspected carcinogen not registered for use with food-producing animals in the European Union, Australia, the US and some other countries. The results from this study now demonstrate that residues of leuco CV, the main metabolite of CV, may occur as an organic contaminant in samples of wild eels caused by discharges of municipal sewage effluents. Abstract. Crystal violet (CV) and leucocrystal violet (LCV) were found in the tissues of wild eels caught from surface waters under the influence of effluents discharged by municipal sewage treatment plants (STPs). LCV was the dominant residue detected with total concentrations up to 6.7 μg kg–1 fresh weight in tissues of eels caught from lakes, rivers and a canal in Berlin, Germany. The occurrence of the residues found in 35 out of 45 samples could directly be linked to the presence of discharges by municipal STPs into the receiving surface waters. CV is a multiple-use compound that is also used as a biological stain and to colour materials such as textiles, paints and printing inks. Thus, it seems very likely that the residues of CV found in the eel samples originate from such uses and from legal uses of CV as a veterinary drug for the treatment of ornamental fish. The results obtained from this study are the first report of background contamination by CV found in samples of fish not intentionally treated with this agent. Although the residues of CV and LCV measured in the tissues of the eels were very low, an oral exposure to residues of CV or LCV should be avoided with regard to their mutagenic and carcinogenic potential. According to European Union law, zero tolerance applies to all residues of CV and LCV found in food for human consumption, as CV is not registered for use as a veterinary drug.

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