Removal of endocrine disrupting compounds using a membrane bioreactor and disinfection

2007 ◽  
Vol 6 (2) ◽  
pp. 131-137 ◽  
Author(s):  
A J Spring ◽  
D M Bagley ◽  
R C Andrews ◽  
S Lemanik ◽  
P Yang
Keyword(s):  
Membrane Bioreactor ◽  
Endocrine Disrupting Compounds ◽  
Endocrine Disrupting

Fate and transport of endocrine-disrupting compounds (oestrone and 17β-oestradiol) in a membranebio-reactor used for water re-use

2006 ◽  
Vol 53 (9) ◽  
pp. 123-130 ◽  
Author(s):  
Seojin Chang ◽  
Namjung Jang ◽  
Younghyun Yeo ◽  
In S. Kim
Keyword(s):  
Membrane Filtration ◽  
Membrane Bioreactor ◽  
Wastewater Treatment Plants ◽  
Sewage Treatment ◽  
Fate And Transport ◽  
Endocrine Disrupting Compounds ◽  
Hollow Fibre ◽  
Incomplete Removal ◽  
Endocrine Disrupting ◽  
Micro Pollutants

Oestrogens have been detected in the effluents of sewage treatment plants (STPs) in several countries, as well as in surface water. This occurrence is fundamentally attributed to the excretion of oestrogen from humans and mammalian bodies, and the incomplete removal of these compounds from wastewater treatment plants. These micro-pollutants are causing great concern when it comes to water re-use. There is a lack information on endocrine-disrupting compounds (EDCs) such as oestrogen in water re-use systems, e.g. a membrane bioreactor (MBR). It is clear that there is a strong need for “EDCs in MBR for water re-use”. This study examined an E1 and E2 biodegradation batch test by an activated sludge and hollow fibre membrane filtration test with and without a bio-cake. E2 was effectively removed, even in high initial concentrations (1,000 ppb). E2 was oxidised into E1, and E1 had a lower adsorption rate than E2. The membrane with the bio-cake provided better removal than the virgin membrane.

Removal of endocrine disrupting chemicals in a large scale membrane bioreactor plant combined with anaerobic-anoxic-oxic process for municipal wastewater reclamation

2011 ◽  
Vol 64 (7) ◽  
pp. 1511-1518 ◽  
Author(s):  
Chunying Wu ◽  
Wenchao Xue ◽  
Haidong Zhou ◽  
Xia Huang ◽  
Xianghua Wen
Keyword(s):  
Removal Efficiency ◽  
Large Scale ◽  
Membrane Bioreactor ◽  
Municipal Wastewater ◽  
Estrogenic Activity ◽  
Endocrine Disrupting Compounds ◽  
Gas Chromatography Mass Spectrometry ◽  
Wastewater Reclamation ◽  
Kd Values ◽  
Endocrine Disrupting

The removal of eight typical endocrine disrupting compounds (EDCs) in a full scale membrane bioreactor combined with anaerobic-anoxic-oxic process (A2/O-MBR) for municipal wastewater reclamation located in Beijing was investigated. These EDCs, including 4-octylphenol (4-OP), 4-n-nonylphenol (4-n-NP), bisphenol A (BPA), estrone (E1), 17α-estradiol (17α-E2), 17β-estradiol (17β-E2), estriol (E3) and 17α-ethinylestradiol (EE2), were simultaneously analyzed by gas chromatography/mass spectrometry after derivatization. The concentrations of eight EDCs were also measured in sludge of anaerobic, anoxic, oxic and membrane tanks to measure sludge-water distribution coefficients (Kd values) as the indicator of adsorption propensity of target compound to sludge. The removal efficiencies of EDCs reached above 97%, except for 4-n-NP removal efficiency of 72%, 4-OP removal efficiency of 75% and EE2 removal efficiency of 87% in the A2/O-MBR process. The high Kd values indicated that the sludge had a large adsorption capacity for these EDCs, and significantly contributed to removal of EDCs. Yeast estrogen screen assay was performed on samples to assess the total estrogenic activity by measuring the 17β-E2 equivalent quantity (EEQ), expressed in ng-EEQ/L. The measured EEQ value was markedly reduced from 72.1 ng-EEQ/L in the influent to 4.9 ng-EEQ/L in the effluent. Anoxic tank and anaerobic tank contributed to 80% and 37% in total EEQ removal, respectively.

Calculation methods to perform mass balance of endocrine disrupting compounds in a submerged membrane bioreactor: fate and distribution of estrogens during the biological treatment

2011 ◽  
Vol 64 (11) ◽  
pp. 2158-2168 ◽  
Author(s):  
E. B. Estrada-Arriaga ◽  
P. Mijaylova
Keyword(s):  
Mass Balance ◽  
Water Distribution ◽  
Membrane Bioreactor ◽  
Dry Weight ◽  
Endocrine Disrupting Compounds ◽  
Distribution Coefficients ◽  
Operational Conditions ◽  
Submerged Membrane Bioreactor ◽  
Endocrine Disrupting ◽  
Adsorption Processes

The purpose of this paper is to report the study of the fate and distribution of three endocrine disrupting compounds (estrogens); Estrone (E1), 17β-estradiol (E2), and 17α-ethinylestradiol (EE2) in a laboratory scale submerged membrane bioreactor (SMBR). For this matter, both aqueous and solids phases were analyzed for the presence of E1, E2 and EE2. The outcome of this study was that three SMBRs showed enhanced elimination of estrogens in different operational conditions; the estrogen removal was close to 100% in SMBR. Additionally, E1, E2 and EE2 were detected in SMBR sludge at concentrations of up to 41.2, 37.3 and 36.9 ng g−1 dry weight, respectively. The estrogen removal in the SMBRs was directly influenced by a combination of simultaneous biodegradation–adsorption processes, indicating that the main removal mechanism of the estrogens in the SMBRs is the biodegradation process. The E1, E2 and EE2 were biologically degraded in the SMBR (87–100%). The sorption of estrogens onto activated sludge was from 2%. Therefore, a high potential for estrogen removal by biodegradation in the SMBR was observed, allowing less estrogen concentration in the dissolved phase available for the adsorption of these compounds onto biological flocs. Two different methods were carried out for mass balance calculations of estrogens in SMBR. For the first method, the measured data was used in both liquid and solid phases, whereas for the second one, it was in aqueous phase and solid–water distribution coefficients (Kd) value of E1, E2 and EE2. The purpose of these methodologies is to make easier the identification of the main mechanisms involved in the removal of E1, E2 and EE2 in a SMBR. Both methods can be applied in order to determine the mechanism, fate and distribution of estrogens in a SMBR.

Fate of Endocrine Disrupting Compounds in Membrane Bioreactor Systems

2007 ◽  
Vol 41 (11) ◽  
pp. 4097-4102 ◽  
Author(s):  
J. Y. Hu ◽  
X. Chen ◽  
G. Tao ◽  
K. Kekred
Keyword(s):  
Membrane Bioreactor ◽  
Endocrine Disrupting Compounds ◽  
Endocrine Disrupting

scholarly journals Recent Advances in the Rejection of Endocrine-Disrupting Compounds from Water Using Membrane and Membrane Bioreactor Technologies: A Review

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 392 ◽  
Author(s):  
Kamil Kayode Katibi ◽  
Khairul Faezah Yunos ◽  
Hasfalina Che Man ◽  
Ahmad Zaharin Aris ◽  
Mohd Zuhair bin Mohd Nor ◽  
...  
Keyword(s):  
Membrane Bioreactor ◽  
Endocrine Disrupting Chemicals ◽  
Endocrine Disrupting Compounds ◽  
Mitigation Strategies ◽  
Treatment Methods ◽  
Treatment Techniques ◽  
Treatment Processes ◽  
Recent Advances ◽  
Comprehensive Information ◽  
Endocrine Disrupting

Water is a critical resource necessary for life to be sustained, and its availability should be secured, appropriated, and easily obtainable. The continual detection of endocrine-disrupting chemicals (EDCs) (ng/L or µg/L) in water and wastewater has attracted critical concerns among the regulatory authorities and general public, due to its associated public health, ecological risks, and a threat to global water quality. Presently, there is a lack of stringent discharge standards regulating the emerging multiclass contaminants to obviate its possible undesirable impacts. The conventional treatment processes have reportedly ineffectual in eliminating the persistent EDCs pollutants, necessitating the researchers to develop alternative treatment methods. Occurrences of the EDCs and the attributed effects on humans and the environment are adequately reviewed. It indicated that comprehensive information on the recent advances in the rejection of EDCs via a novel membrane and membrane bioreactor (MBR) treatment techniques are still lacking. This paper critically studies and reports on recent advances in the membrane and MBR treatment methods for removing EDCs, fouling challenges, and its mitigation strategies. The removal mechanisms and the operating factors influencing the EDCs remediation were also examined. Membranes and MBR approaches have proven successful and viable to eliminate various EDCs contaminants.

Nanofiltration of endocrine disrupting compounds

2003 ◽  
Vol 3 (5-6) ◽  
pp. 321-327 ◽  
Author(s):  
M. Gallenkemper ◽  
T. Wintgens ◽  
T. Melin
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Endocrine Disrupting Compounds ◽  
Municipal Wastewater Treatment ◽  
Water And Wastewater Treatment ◽  
Wide Range ◽  
Endocrine Disrupting ◽  
Municipal Wastewater Treatment Plants ◽  
Set Up

Endocrine disrupting compounds can affect the hormone system in organisms. A wide range of endocrine disrupters were found in sewage and effluents of municipal wastewater treatment plants. Toxicological evaluations indicate that conventional wastewater treatment plants are not able to remove these substances sufficiently before disposing effluent into the environment. Membrane technology, which is proving to be an effective barrier to these substances, is the subject of this research. Nanofiltration provides high quality permeates in water and wastewater treatment. Eleven different nanofiltration membranes were tested in the laboratory set-up. The observed retention for nonylphenol (NP) and bisphenol A (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. The retention of BPA was found to be inversely proportional to the membrane permeability.

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