Department of Bioenvironmental Engineering and R&D Center for Membrane Technology, Chung Yuan Christian University, No. 200, Rd. Chung-Pei, Chungli 320, Taiwan.
J Hazard Mater. 2009 Dec 15;172(1):172-9. doi: 10.1016/j.jhazmat.2009.06.149. Epub 2009 Jul 4.
Textile dyeing wastewater contains harmful compounds, which are toxic to both marine organisms and human beings if it discharged into an aquatic environmental without suitable treatment. In this study, the wastewater containing the azo dye, Reactive Black 5 (RB5), was partially treated in an anaerobic sequencing batch reactor which was further treated either in an aerobic membrane bioreactors (AOMBR) or in combined aerobic membrane bioreactor/reverse osmosis (AOMBR/RO) process. The results showed that in the anaerobic sequencing batch reactor the RB5 dye was degraded to form aromatic amine intermediate metabolites, which were further mineralized in the AOMBR. It was also observed that although all effluents from the AOMBR and AOMBR/RO processes met the Taiwan EPA's effluent criteria, irrespective of which membranes were used in the aerobic tank, the effluent from the AOMBR/RO process met the criteria for reuse for toilet flushing, landscaping, irrigation, and cooling water purposes, where as the AOMBR effluent only met the criteria for cooling water due to incomplete color removal. Five anaerobic high dye-degrading bacteria were isolated, which were identified to be the same species of Lactococcus lactis by 16S rRNA sequencing. The L. lactis showed complete degradation of RB5 and further studies showed that it can also able to degrade Reactive Red 120 and Reactive Yellow 84 efficiently within 6h.
纺织染色废水中含有有害物质，如果未经适当处理就排放到水生环境中，会对海洋生物和人类都有毒害。在这项研究中，部分含有偶氮染料活性黑 5（RB5）的废水在厌氧序批式反应器中进行了处理，然后要么在好氧膜生物反应器（AOMBR）中进一步处理，要么在组合好氧膜生物反应器/反渗透（AOMBR/RO）工艺中处理。结果表明，在厌氧序批式反应器中，RB5 染料被降解形成芳香胺中间代谢物，然后在 AOMBR 中进一步矿化。还观察到，尽管 AOMBR 和 AOMBR/RO 工艺的所有出水都符合台湾环保署的排放标准，但无论在好氧池中使用哪种膜，AOMBR/RO 工艺的出水都符合冲厕、景观、灌溉和冷却水再利用的标准，而 AOMBR 出水仅因颜色去除不完全而符合冷却水标准。分离出了 5 株具有高染料降解能力的厌氧细菌，通过 16S rRNA 测序鉴定为同一种乳球菌（Lactococcus lactis）。该乳球菌能够在 6 小时内完全降解 RB5，进一步的研究表明，它还能够有效地降解活性红 120 和活性黄 84。
