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首页> 外文期刊>Desalination: The International Journal on the Science and Technology of Desalting and Water Purification >Endocrine disrupting compounds: A comparison of removal between conventional activated sludge and membrane bioreactors
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Endocrine disrupting compounds: A comparison of removal between conventional activated sludge and membrane bioreactors

机译:内分泌干​​扰化合物:常规活性污泥和膜生物反应器去除效果的比较

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摘要

The removal of endocrine disrupting compounds (EDCs) was investigated in a conventional activated sludge plant connected with a tertiary treatment (CAS-TT) and two membrane bioreactor pilot plants installed with flat sheet (MBR-FS) and hollow fibre (MBR-HF) modules. Chemical compounds such as alkylphenols (40P and 4tOP), nonylphenols (NP), bisphenol A (BPA), phthalates (DMP, DEP, DBP, BBP, BEHP, and DOP) and estrogens (El and EE2) were determined in dissolved wastewater by employing stir bar sorptive extraction and thermal desorption-gas chromatography-mass spectrometry. Samples were taken during three months from the outlet of the primary settling tank (PS), the tertiary treatment and the flat sheet and hollow fibre modules. All the target compounds were detected in the effluent of the PS during the monitored period except DMP, 40P, DOP and EE2. The MBR modules were more efficient in the removal of DEP, DBP and BBP than CAS-TT, whereas CAS-TT was more efficient in the removal of BEHP. For 4tOP and BPA the removal efficiency found was very similar when CAS-TT or MBR treatments were applied. Only slight differences were detected comparing both MBR modules. MBR-HF seemed to be adequate for DBP and NP removal, while MBR-FS was better for DEP and BBP removal.
机译:在与三级处理(CAS-TT)连接的常规活性污泥工厂和两个装有平板(MBR-FS)和中空纤维(MBR-HF)的膜生物反应器中试工厂中研究了去除内分泌干扰化合物(EDC)的方法。模块。通过溶解废水中的烷基苯酚(40P和4tOP),壬基苯酚(NP),双酚A(BPA),邻苯二甲酸酯(DMP,DEP,DBP,BBP,BEHP和DOP)和雌激素(E1和EE2)等化学化合物进行了测定采用搅拌棒吸附萃取和热脱附-气相色谱-质谱联用。在三个月的时间里,从一级沉淀池(PS)的出口,三级处理以及平板和中空纤维模块中取样。在监测期间,在PS的流出物中检测到所有目标化合物,除了DMP,40P,DOP和EE2。 MBR模块在去除DEP,DBP和BBP方面比CAS-TT更有效,而CAS-TT在BEHP去除方面更有效。对于4tOP和BPA,当应用CAS-TT或MBR处理时,去除效率非常相似。比较两个MBR模块,仅检测到细微差异。 MBR-HF似乎足以去除DBP和NP,而MBR-FS更好地去除DEP和BBP。

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