Study on endocrine disrupting chemicals in wastewater treatment plants

2001 ◽  
Vol 43 (2) ◽  
pp. 101-108 ◽  
Author(s):  
M. Nasu ◽  
M. Goto ◽  
H. Kato ◽  
Y. Oshima ◽  
H. Tanaka
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Endocrine Disrupting Chemicals ◽  
Settling Tank ◽  
Actual Condition ◽  
Limit Of Determination ◽  
Endocrine Disrupting ◽  
Biological Reaction ◽  
Reduction Effect ◽  
Almost All

From July 1998 to March 1999, a study was made of a total of 27 treatment plants for the principal purpose of understanding the actual condition of endocrine disrupting chemicals (EDCs) in sewage, and the behavior of EDCs in wastewater treatment plants. The results showed actual levels of influent and effluent concentrations of EDCs in sewage. Substances detected above the minimum limit of determination were 15 for wastewater influent and 6 for effluent. Similarly, nonyl phenol ethoxylate and 17β-estradiol, which are highlighted as pertinent substances, were detected. It was confirmed that the reduction ratio of EDCs in treatment plants was 90% or more for almost all substances. The behavior of EDCs in general in treatment plants was also studied. As a result, the EDCs reduction effect was recognized in both the primary settling tank and biological reaction tank, though the trend varies among substances.

scholarly journals Simultaneous detection of endocrine disrupting chemicals including conjugates in municipal wastewater and sludge with enhanced sample pretreatment and UPLC-MS/MS

2015 ◽  
Vol 17 (8) ◽  
pp. 1377-1385 ◽  
Author(s):  
Bing Zhu ◽  
Weiwei Ben ◽  
Xiangjuan Yuan ◽  
Yu Zhang ◽  
Min Yang ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Municipal Wastewater ◽  
Wastewater Treatment Plants ◽  
Endocrine Disrupting Chemicals ◽  
Simultaneous Detection ◽  
Sample Pretreatment ◽  
Endocrine Disrupting

Free and conjugated endocrine disrupting chemicals were simultaneously detected in wastewater and sludge to explore their behavior and fate in wastewater treatment plants.

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.

Effect of wastewater chlorination on endocrine disruptor removal

2013 ◽  
Vol 67 (7) ◽  
pp. 1551-1556 ◽  
Author(s):  
C. Noutsopoulos ◽  
D. Mamais ◽  
V. Samaras ◽  
T. Bouras ◽  
M. Marneri ◽  
...  
Keyword(s):  
Wastewater Treatment Plants ◽  
Endocrine Disrupting Chemicals ◽  
Wastewater Reuse ◽  
Endocrine System ◽  
Secondary Effluent ◽  
Batch Tests ◽  
Toxic Metabolites ◽  
Endocrine Disrupting ◽  
Water Courses ◽  
Removal Efficiencies

Endocrine disrupting chemicals (EDCs) are compounds of mainly anthropogenic origin that interfere with the endocrine system of animals and humans thus causing a series of disorders. Wastewater treatment plants are one of the major routes for transporting such chemicals to the water courses. In the context of this study, several chlorination batch tests were performed in order to assess the effectiveness of chlorination to remove bisphenol A (BPA), triclosan (TCS), nonylphenol (NP) and its ethoxylates (NP1EO and NP2EO) from secondary effluent. According to the results, an appreciable removal of NP, BPA and TCS to the order of 60–84% was observed as an effect of moderate chlorination doses. This was not the case for NP1EO and NP2EO as even at high chlorine doses, removal efficiencies were lower (37% for NP1EO and 52% for NP2EO). Removal efficiencies of NP, BPA and TCS are practically independent of contact time, although this was not the case for NP1EO and NP2EO. Based on toxicity experiments, it is anticipated that following chlorination of the target chemicals, production of more toxic metabolites is taking place. Therefore the effectiveness of chlorination to remove EDCs is questionable and more research is needed to guarantee safe wastewater reuse.

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