COMPARATIVE ANALYSIS OF ESTROGENIC ACTIVITY IN SEWAGE TREATMENT PLANT EFFLUENTS INVOLVING THREE IN VITRO ASSAYS AND CHEMICAL ANALYSIS OF STEROIDS

2004 ◽  
Vol 23 (4) ◽  
pp. 857 ◽  
Author(s):  
Barbara V. Rutishauser ◽  
Maija Pesonen ◽  
Beate I. Escher ◽  
Gabriele E. Ackermann ◽  
Hans-Rudolf Aerni ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Chemical Analysis ◽  
Estrogenic Activity ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
In Vitro Assays

Bisphenol A emission factors from industrial sources and elimination rates in a sewage treatment plant

2003 ◽  
Vol 47 (10) ◽  
pp. 117-122 ◽  
Author(s):  
M. Fuerhacker
Keyword(s):  
Bisphenol A ◽  
Estrogenic Activity ◽  
Animal Experiments ◽  
Elimination Rate ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Emission Factors ◽  
Point Sources ◽  
In Vitro Test

Bisphenol A (BPA) is widely used for the production of epoxy resins and polycarbonate plastics and is considered an endocrine disruptor. Special in vitro test systems and animal experiments showed a weak estrogenic activity. Aquatic wildlife especially could be endangered by waste water discharges. To manage possible risks arising from BPA emissions the major fluxes need to be investigated and the sources of the contamination of municipal treatment plants need to be determined. In this study, five major industrial point sources, two different household areas and the influent and effluent of the corresponding treatment plant (WWTP) were monitored simultaneously at a plant serving 120,000 population equivalents. A paper producing plant was the major BPA contributor to the influent load of the wastewater treatment plant. All the other emissions from point sources, including the two household areas, were considerably lower. The minimum elimination rate in the WTTP could be determined at 78% with an average of 89% of the total BPA-load. For a possible pollution-forecast, or for a comparison between different point sources, emission factors based on COD-emissions were calculated for industrial and household point sources at BPA/COD-ratios between 1.4 ×10−6-125×10−6 and 1.3×10−6-6.3×10−6, respectively.

CHEMICAL AND BIOLOGICAL ANALYSIS OF ENDOCRINE DISRUPTING HORMONES AND ESTROGENIC ACTIVITY IN AN ADVANCED SEWAGE TREATMENT PLANT

2007 ◽  
Vol preprint (2008) ◽  
pp. 1 ◽  
Author(s):  
Mathieu Muller ◽  
Fanja Rabenoelina ◽  
Patrick Balaguer ◽  
Dominique Patureau ◽  
Karin Lemenach ◽  
...  
Keyword(s):  
Estrogenic Activity ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Biological Analysis ◽  
Endocrine Disrupting

scholarly journals Treatment of Chromium Pollution by the Reductase Enzyme Generated by a Chromium-Resistant Bacterium Isolated in Dewatering Sludge

2017 ◽  
Vol 9 (3) ◽  
pp. 1 ◽  
Author(s):  
Paul Fabrice Nguema ◽  
Zejiao Luo ◽  
Zachari Mohamadou Mounir ◽  
Ma Jun
Keyword(s):  
Microbial Growth ◽  
Sewage Treatment ◽  
Reduction Rate ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Maximum Activity ◽  
16S Rdna Gene ◽  
Polluted Sites ◽  
16S Rdna Gene Sequencing

An efficient Cr (VI)-resistant and reducing bacterial strain was successfully isolated in dewatering sludge collected from a sewage treatment plant, and characterized in vitro Cr (VI) reduction through a reductase enzyme. Phylogenetic analysis using 16S rDNA gene sequencing revealed that the newly isolated strain namely Pf-1 was closely related to Bacillus cereus. The strain almost reduced 0.17 mM Cr (VI) within 24h incubation and the presence of different substrates such as glucose, sucrose, or acetate significantly enhanced the reduction rate of Cr (VI) to Cr (III). However, addition of the same substrate at the stationary phase of the microbial growth increased the reduction rate as well as bacterial growth. Additionally, raising the concentration of thiosulfate in the medium doubled the reduction rate under similar conditions. Assay with different fractions of the cells demonstrated that the reductase enzyme activity was mainly associated with the cytoplasmic fraction. The maximum activity was 23.3 µM h-1 mg-1 protein and was obtained at the Cr (VI) concentration of 2 mM. The promising strain can be efficiently employed for bioremediation of Cr (VI) polluted sites.

Study of estrogenic effects on carp (Cyprinus carpio) exposed to sewage treatment plant effluents

2003 ◽  
Vol 47 (9) ◽  
pp. 93-100 ◽  
Author(s):  
T. Higashitani ◽  
H. Tamamoto ◽  
A. Takahashi ◽  
H. Tanaka
Keyword(s):  
Cyprinus Carpio ◽  
Estrogenic Activity ◽  
Tap Water ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Early Spring ◽  
Activity Level ◽  
Carp Cyprinus Carpio ◽  
Water Tanks

To investigate whether male carp (Cyprinus carpio) are really feminized by estrogen-like substances in effluent from sewage treatment plants (STPs) in Japan, exposure tests were performed using carp in water tanks that were receiving effluent from a STP. During eight weeks of exposure, we had measured their serum vitellogenin (VTG), a precursor of yolk protein specific for females that is synthesized in their liver by estrogen-like substances and that is, therefore, a biomarker of feminization. For this research, a STP with representative effluent estrogenic activity level was selected. In the first run of the tests that launched in the early spring of 2000, male carp were exposed. Results showed that the VTG concentration in male carp exposed to the effluent increased with time, while it was reduced after exposure to the effluents was stopped and the exposure was changed to dechlorinated tap water. On the other hand, in the control experiment, VTG was not detected in male carp exposed to dechlorinated tap water. Therefore, male carp might be reversibly feminized by the STP effluent. To assure whether the feminization of male carp was caused by the STP effluent at any time, two more runs of the test were performed in the summer of 2000 and February to April of 2001. However, significant level of VTG in male carp could not be observed for eight weeks. The estrogenic activities in the effluents were almost the same level throughout the tests; therefore the seasonal timing of exposure might be important for understanding this inconsistent phenomenon.

CHEMICAL AND BIOLOGICAL ANALYSIS OF ENDOCRINE-DISRUPTING HORMONES AND ESTROGENIC ACTIVITY IN AN ADVANCED SEWAGE TREATMENT PLANT

2008 ◽  
Vol 27 (8) ◽  
pp. 1649 ◽  
Author(s):  
Mathieu Muller ◽  
Fanja Rabenoelina ◽  
Patrick Balaguer ◽  
Dominique Patureau ◽  
Karin Lemenach ◽  
...  
Keyword(s):  
Estrogenic Activity ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Biological Analysis ◽  
Endocrine Disrupting

Analysis and balance of phosphorous removal from wastewater at urban wastewater treatment plant

2020 ◽  
Vol 15 (2) ◽  
pp. 142-151
Author(s):  
Peter Lukac ◽  
Lubos Jurik
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Wastewater Treatment Plants ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Phosphorus Recovery ◽  
Anaerobic Sludge ◽  
Biological Phosphorus Removal ◽  
The Mean

Abstract:Phosphorus is a major substance that is needed especially for agricultural production or for the industry. At the same time it is an important component of wastewater. At present, the waste management priority is recycling and this requirement is also transferred to wastewater treatment plants. Substances in wastewater can be recovered and utilized. In Europe (in Germany and Austria already legally binding), access to phosphorus-containing sewage treatment is changing. This paper dealt with the issue of phosphorus on the sewage treatment plant in Nitra. There are several industrial areas in Nitra where record major producers in phosphorus production in sewage. The new wastewater treatment plant is built as a mechanicalbiological wastewater treatment plant with simultaneous nitrification and denitrification, sludge regeneration, an anaerobic zone for biological phosphorus removal at the beginning of the process and chemical phosphorus precipitation. The sludge management is anaerobic sludge stabilization with heating and mechanical dewatering of stabilized sludge and gas management. The aim of the work was to document the phosphorus balance in all parts of the wastewater treatment plant - from the inflow of raw water to the outflow of purified water and the production of excess sludge. Balancing quantities in the wastewater treatment plant treatment processes provide information where efficient phosphorus recovery could be possible. The mean daily value of P tot is approximately 122.3 kg/day of these two sources. The mean daily value of P tot is approximately 122.3 kg/day of these two sources. There are also two outflows - drainage of cleaned water to the recipient - the river Nitra - 9.9 kg Ptot/day and Ptot content in sewage sludge - about 120.3 kg Ptot/day - total 130.2 kg Ptot/day.

Changes of microbial indices of water quality in the Vistula and Brda rivers as a result of sewage treatment plant operation

2008 ◽  
Vol 37 (2) ◽  
Author(s):  
Maciej Walczak
Keyword(s):  
Water Quality ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Sewage Treatment Plants ◽  
Plant Operation ◽  
Treated Sewage ◽  
Microbiological Parameters ◽  
Microbial Indices

Changes of microbial indices of water quality in the Vistula and Brda rivers as a result of sewage treatment plant operationThis paper reports the results of studies of microbiological changes in the water quality of the Vistula and Brda rivers after the opening of sewage treatment plants in Bydgoszcz. The study involved determining the microbiological parameters of water quality. Based on the results obtained, it was found that the quality of the water in both rivers had improved decidedly after the opening of the plants, although an increased number of individual groups of microorganisms was found at the treated sewage outlet from one of the plants.

Properties of Nocardiaform Actinomycetes Isolated from a Sewage Treatment Plant of Southern Part of Miyagi.

2000 ◽  
Vol 36 (4) ◽  
pp. 161-171
Author(s):  
KENITSU KONNO ◽  
NAOKI ABE ◽  
YOSHIRO SATO ◽  
KOJI AKAMATSU ◽  
MAKOTO ABE ◽  
...  
Keyword(s):  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant
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