Anaerobic biodegradation and decolorization of a refractory acid dye by a forward osmosis membrane bioreactor†,Environmental Science: Water Research & Technology

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Anaerobic biodegradation and decolorization of a refractory acid dye by a forward osmosis membrane bioreactor†
Environmental Science: Water Research & Technology ( IF 3.5 ) Pub Date : 2017-12-01 00:00:00 , DOI: 10.1039/c7ew00400a
Fang Li _{1,

2,

3,

4,

5} , Qin Xia _{1,

2,

3,

4} , Yingying Gao _{1,

2,

3,

4} , Qianxun Cheng _{1,

2,

3,

4} , Lián Ding _{1,

2,

3,

4} , Bo Yang _{1,

2,

3,

4} , Qing Tian _{1,

2,

3,

4,

5} , Chunyan Ma _{1,

2,

3,

4,

5} , Wolfgang Sand _{1,

2,

3,

4,

6} , Yanbiao Liu _{1,

2,

3,

4,

5}

Affiliation

In this study, the feasibility of utilizing an anaerobic osmotic membrane bioreactor (OMBR) for the treatment of a refractory acid dye, Lanaset red G.GR, is demonstrated. The experimental results show that an increased sludge concentration and reversed salt accumulation exacerbate membrane fouling, which leads to flux decline. The excellent rejection performance of the forward osmosis (FO) membrane and salt accumulation could lead to a reduction of microbial activity and an increase in soluble microbial product (SMP) and extracellular polymeric substance (EPS) contents. These consequences will affect the OMBR performance. Moreover, the FO membrane demonstrated a limited rejection of aniline-type intermediates. These overall findings suggest that the OMBR process is a good option for the treatment of dyeing wastewater. Further improvements on the membrane materials and membrane surface properties to alleviate fouling, salt reverse osmosis as well as the remaining color issues are still necessary before practical application becomes possible.

中文翻译：

正渗透膜生物反应器对难处理的酸性染料进行厌氧生物降解和脱色†

在这项研究中，利用厌氧渗透膜生物反应器（OMBR）处理难处理的酸性染料Lanaset红G.GR的可行性演示。实验结果表明，污泥浓度的增加和盐分累积的逆转加剧了膜的结垢，从而导致通量下降。正向渗透（FO）膜的优异排斥性能和盐分累积会导致微生物活性降低，可溶性微生物产物（SMP）和细胞外聚合物（EPS）含量增加。这些后果将影响OMBR性能。此外，FO膜显示出苯胺类中间体的有限排斥。这些总体发现表明，OMBR工艺是处理印染废水的好选择。进一步改善膜材料和膜表面性能以减轻结垢，

更新日期：2017-12-01

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