Detection and removal of estrogencity in membrane biological reactors

2006 ◽  
Vol 6 (6) ◽  
pp. 19-26 ◽  
Author(s):  
J.Y. Hu ◽  
X. Chen
Keyword(s):  
Estrogenic Activity ◽  
Solid Phase ◽  
Treatment Plant ◽  
Endocrine Disrupting Compounds ◽  
Pilot Scale ◽  
Membrane Bioreactors ◽  
Yeast Cells ◽  
Endocrine Disrupting ◽  
And Behavior ◽  
Fate And Behavior

Three pilot-scale submerged membrane bioreactors (MBRs) in a local wastewater treatment plant (K, M and Z) were studied with the objective to compare the performance of pre-denitrification MBR systems in eliminating the estrogenic activity of the effluent of primary clarifier. A total of 5 batches of samples, which included influent, effluent, supernatant and sludge from the respective aerobic and anoxic tanks were collected over the span. They were investigated by using the developed solid-phase extraction (SPE) protocol coupled with a modified yeast-based estrogen screen (YES) assay. From the results, it could be seen that M MBR demonstrated the best endocrine disrupting compounds (EDCs) removal efficiency. The fate and behavior of EDCs in MBR systems were fairly understood with estrogenic activity formation dominating in the anoxic tank and removal dominating in the aerobic tank. It is believed that the sorption of EDCs onto the sludge as well as biodegradation of EDCs might be the key mechanisms for the EDCs removal. The low response of YES when dealing with influent samples was mainly due to the inhibition and antagonist effects induced by the influent samples on yeast cells.

scholarly journals Evaluation of the Presence of Endocrine-Disrupting Compounds in Dissolved and Solid Wastewater Treatment Plant Samples of Gran Canaria Island (Spain)

2013 ◽  
Vol 2013 ◽  
pp. 1-15 ◽  
Author(s):  
T. Vega-Morales ◽  
Z. Sosa-Ferrera ◽  
J. J. Santana-Rodríguez
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Estrogenic Activity ◽  
Solid Phase ◽  
Treatment Plant ◽  
Endocrine Disrupting Compounds ◽  
Gran Canaria ◽  
Assisted Extraction ◽  
Endocrine Disrupting ◽  
Ultrasonic Assisted

Liquid and solid samples from two wastewater treatment plants (WWTPs) on Gran Canaria Island (Spain) have been tested for the presence of compounds with endocrine-disrupting properties. The selected degradation stages were sampled bimonthly from each WWTP over the 12-month period from July 2010 to July 2011. The analytical methods used for the determination of the endocrine-disrupting compounds (EDCs) were based on on-line solid phase extraction, microwave-assisted extraction (MAE), and ultrasonic-assisted extraction (UAE) coupled to UHPLC-MS/MS. All of the hyphenated methodologies employed in this work showed good recoveries (72–104%) and sensitivities, with LODs lower than 7.0 ng L−1and 6.3 ng g−1for the dissolved and solid fractions, respectively. We have also evaluated the estrogenicity of the samples in terms of their estradiol equivalent concentrations (EEQs). The chemical analysis of the selected EDCs revealed fairly low concentrations for both natural and synthetic oestrogens, alkylphenolic compounds, and bisphenol-A in each of the dissolved, particulate, and sludge samples (ng L−1or ng g−1). However, the estimated estrogenic activity indicated that the majority of samples could represent an important environmental risk, clearly surpassing the threshold to exert deleterious consequences on living beings.

scholarly journals Occurrence and Risk Assessment of Steroidal Hormones and Phenolic Endocrine Disrupting Compounds in Surface Water in Cuautla River, Mexico

Water ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 2628 ◽  
Author(s):  
Griselda Marissa Calderón-Moreno ◽  
Josefina Vergara-Sánchez ◽  
Hugo Saldarriaga-Noreña ◽  
Maria Luisa García-Betancourt ◽  
Martha Lilia Domínguez-Patiño ◽  
...  
Keyword(s):  
Surface Water ◽  
Estrogenic Activity ◽  
Solid Phase ◽  
Treatment Plant ◽  
Domestic Wastewater ◽  
Aquatic Organisms ◽  
Endocrine Disrupting Compounds ◽  
Potential Ecological Risk ◽  
Endocrine Disrupting ◽  
Steroidal Hormones

In this study, two hormones 17β-estradiol (E2) and 17α-ethynylestradiol (EE2), and three phenolic compounds, bisphenol A (BPA), 4-N-nonylphenol (4-NP) and 4-tert-octylphenol (4-t-OP), were determined in surface water in the Cuautla River at the State of Morelos during the dry-season in Mexico. The endocrine disrupting compounds (EDCs) were extracted from water samples using solid-phase extraction (SPE) with end-capped C18, and then the extracts were chemically derivatized to TMS (trimethylsylane)-compounds and analyzed by gas chromatography coupled to mass spectrometry (GCMS). The most abundant compound was BPA (22.46 ± 30.17 ng L−1), followed by 4-t-OP (11.24 ± 11.76 ng L−1), 4-NP (7.53 ± 14.88 ng L−1), EE2 (2.37 ± 4.36 ng L−1) and E2 (0.97 ± 1.82 ng L−1). The residual amounts of target compounds could either reach stream surface water from direct domestic wastewater discharges, conventional wastewater treatment plant or can be a result from the use of agrochemicals in crop areas. The EDCs in Cuautla River exerted a high pressure on the aquatic ecosystem because their presences in surface water caused medium and high potential ecological risk. Besides, it was found that aquatic organisms were exposed to estrogenic activity.

Removal of endocrine disrupting compounds with membrane processes in wastewater treatment and reuse

2004 ◽  
Vol 50 (5) ◽  
pp. 1-8 ◽  
Author(s):  
T. Wintgens ◽  
M. Gallenkemper ◽  
T. Melin
Keyword(s):  
Contact Angle ◽  
Wastewater Treatment ◽  
Reverse Osmosis ◽  
Treatment Plant ◽  
Endocrine Disrupting Compounds ◽  
Membrane Bioreactors ◽  
Biological Degradation ◽  
Leachate Treatment ◽  
Endocrine Disrupting ◽  
The Subject

Endocrine disrupting compounds can affect the hormone system in organisms and are the subject of environmental and human health concerns. The effluents of wastewater treatment plants contribute to the emission of estrogenically active substances into the environment. Membrane technology, which is an advanced wastewater treatment option, is the subject of this research. The removal techniques under investigation are membrane bioreactors, reverse osmosis, and nanofiltration. Eleven different nanofiltration membranes were tested in the laboratory set-up. The observed retention of NP and BPA ranged between 70% and 100%. The contact angle is an indicator for the hydrophobicity of a membrane, whose influence on the permeability and retention of NP was evident. Regarding the retention of BPA no dependency on the contact angle was observed. Results of the investigation of a full-scale landfill leachate treatment plant indicate a bisphenol A (BPA) removal of more than 98% with membrane bioreactors and reverse osmosis. The mass balance indicates that biological degradation is the most important removal process in the membrane bioreactor configuration.

Sludge reduction potential of metazoa in membrane bioreactors

2001 ◽  
Vol 44 (10) ◽  
pp. 197-202 ◽  
Author(s):  
B.S. Luxmy ◽  
T. Kubo ◽  
K. Yamamoto
Keyword(s):  
Treatment Plant ◽  
Pilot Scale ◽  
Membrane Bioreactors ◽  
Transmembrane Pressure ◽  
Sludge Reduction ◽  
Fouling Control ◽  
Steady Level ◽  
Effective Role ◽  
Real Wastewater ◽  
Reduction Capacity

In order to check the sludge reduction capacity of metazoa in a membrane bioreactor (MBR), pilot-scale studies were conducted. Three MBRs had been set in a wastewater treatment plant at Tokyo, Japan and they were receiving real wastewater. Initially pH inside the three MBRs was controlled as pH 7, 6 and 5 respectively. Then metazoa population was monitored along with MLSS change. It was found that the presence or absence of the metazoa population did not have any significant effect on the increasing pattern of MLSS. In the MBR with pH 6 highest accumulation of sludge was observed though a high and steady level of metazoa (1,000-2,000 per ml) was present there. But in this MBR a lot of metazoa attached in the membrane was also observed and here the increase in transmembrane pressure was less than in the other two. So, metazoa population especially the attached one in the membrane plays an effective role in fouling control of the membrane. Presence of attached media may provide a suitable niche for metazoa in the process. So, attached media known as DB lace was also inserted in MBRs for testing its capacity along with inoculum of oligochaete worms. Accumulation of sludge was not satisfactory in the attached string and it seems that inoculated worm could not adjust to the environment as they were not sludge originated. So, in the next experimental stage, attached media was inserted in the form of a bundle and this time no inoculation of worm was used. A steady metazoa population was observed in the system but the accumulation of sludge in the attached media was the same as before.

The behavior of estrogenic substances in the biological treatment process of sewage

2003 ◽  
Vol 47 (9) ◽  
pp. 109-116 ◽  
Author(s):  
K. Onda ◽  
Y. Nakamura ◽  
C. Takatoh ◽  
A. Miya ◽  
Y. Katsu
Keyword(s):  
Biological Treatment ◽  
Estrogenic Activity ◽  
Pilot Scale ◽  
Screening Assay ◽  
Treated Water ◽  
Operational Conditions ◽  
17Β Estradiol ◽  
One Year ◽  
Batch Treatment ◽  
And Behavior

A study was conducted for about one year on the fate and behavior of estrogens, namely 17β-estradiol (E2), estrone (E1), and estriol (E3) in an activated sludge process of a pilot scale plant supplied with domestic sewage. A simultaneous analytical method for these three substances using LC-MS/MS was developed and applied to sewage samples. The average removal of E2 was 94.7%, while that of E3 was 96.9%. In contrast, the average removal of E1 was relatively low at 69.2% with a maximum concentration of 55.4 ng/L detected in the treated water. The theoretical values of estrogenic activity calculated from the concentrations of each natural estrogen in treated water were found to correlate with the values of estrogenic activity measured by a yeast estrogen screening assay. The effect of E2 on estrogenic activity in influent was found to be high, while that of E1 in treated water was considerably higher. In batch treatment tests on E2, E2 turned into E1 immediately after being charged. After three hours of aeration, the values of both E1 and E2 were around threshold limits. It was determined from this that E1 and E2 were substances that could be degraded by biological treatment. As the removal of E2 was found to be sufficiently high at times, optimization of operational conditions based on E1 removal should be important for reducing estrogenic activity in treated water.

Tertiary ozonation of industrial wastewater for the removal of estrogenic compounds (NP and BPA): a full-scale case study

2013 ◽  
Vol 68 (3) ◽  
pp. 567-574 ◽  
Author(s):  
G. Bertanza ◽  
M. Papa ◽  
R. Pedrazzani ◽  
C. Repice ◽  
M. Dal Grande
Keyword(s):  
Removal Efficiency ◽  
Industrial Wastewater ◽  
Treatment Plant ◽  
Endocrine Disrupting Compounds ◽  
Full Scale ◽  
Residual Content ◽  
Endocrine Disrupting ◽  
Treatment Stage ◽  
Flow Rate Increase

Wastewater treatment plant (WWTP) effluents are considered to be a major source for the release in the aquatic environment of endocrine-disrupting compounds (EDCs). Ozone has proved to be a suitable solution for polishing secondary domestic effluents. In this work, the performance of a full-scale ozonation plant was investigated in order to assess the removal efficiency of four target EDCs: nonylphenol, nonylphenol monoethoxylate, nonylphenol diethoxylate and bisphenol A. The studied system was the tertiary treatment stage of a municipal WWTP which receives an important industrial (textile) load. Chemical analyses showed that the considered substances occurred with a significant variability, typical of real wastewaters; based on this, ozonation performance was carefully evaluated and it appeared to be negatively affected by flow-rate increase (during rainy days, with consequent contact time reduction). Moreover, EDCs' measured removal efficiency was lower than what could be predicted based on literature data, because of the relatively high residual content of biorefractory compounds still present after biological treatment.

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