Comparison of sulfonated and other micropollutants removal in membrane bioreactor and conventional wastewater treatment

被引:95
作者
De Wever, Heleen
Weiss, Stefan
Reemtsma, Thorsten
Vereecken, Johan
Muller, Jutta
Knepper, Thomas
Rorden, Ocke
Gonzalez, Susana
Barcelo, Damia
Dolores Hernando, Maria
机构
[1] Vlaamse Instelling Technol Onderzoek, B-2400 Mol, Belgium
[2] Tech Univ Berlin, Dept Water Qual Control, D-10623 Berlin, Germany
[3] Europa Univ Appl Sci Fresenius, D-65510 Idstein, Germany
[4] Assoc Waterworks River Rhine Catchment, D-50823 Cologne, Germany
[5] CSIC, ES-08034 Barcelona, Spain
[6] Univ Almeria, Dept Analyt Chem, Almeria 04120, Spain
关键词
membrane bioreactors; polar micropollutants; trace organics; domestic wastewater;
D O I
10.1016/j.watres.2006.11.013
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Membrane bioreactors (MBRs) were compared with conventional activated sludge systems (CAS) for micropollutant degradation, in laboratory-scale spiking experiments with synthetic and real domestic wastewater. The target micropollutants were polar in nature and represented a broad range in biodegradability. The experimental data indicated that MBR treatment could significantly enhance removal of the micropollutants 1,6- and 2,7-naphthalene disulfonate (NDSA) and benzothiazole-2-sulfonate. 1,5-NDSA, EDTA and diclofenac were not removed in either the MBR or the CAS. The other compounds were equally well degraded in both systems. For 1,3-naphthalene disulfonate, the existence of a minimum threshold level for degradation could be demonstrated. Although MBRs could not always make a difference in the overall removal efficiencies achieved, they showed reduced lag phases for degradation and a stronger memory effect, which implies that they may respond quicker to variable influent concentrations. Finally, micropollutant removal also turned out to be less sensitive to system operational variables. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码:935 / 945
页数:11
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