You S J, Tseng D H, Ou S H, Chang W K
Department of Bioenvironmental Engineering and R&D Center for Membrane Technology, Chung Yuan Christian University, Chungli 320, Taiwan.
Environ Technol. 2007 Aug;28(8):935-41. doi: 10.1080/09593332808618854.
The textile industry is one of the major industries of Taiwan but unfortunately it produces toxic and low biodegradable wastewater. To remedy this problem, this study compared the performance of the membrane bioreactor (MBR) and sequencing batch reactor (SBR) processes for treating real textile dyeing wastewater. The microbial diversity of the MBR process was also identified by a combination of culturing methods and molecular biotechnology. The removal efficiencies of the MBR process for color, COD, BOD, and SS were 54, 79, 99, and 100%, respectively, all higher than the corresponding parameters for the SBR process: i.e., 51, 70, 96, and 60%. All the above four parameters for the MBR effluent meet the criteria of the Taiwan EPA, while on the other hand, for the SBR process, only color and COD meet the Taiwan EPA effluent criteria. Furthermore, the genus Microbacterium, in particular Microbacterium aurum, was the most predominant population, accounting for 70.6% of the total isolates, and might be responsible for the degradation of the dyeing wastewater. Another two textile dyeing degradation bacteria, Paenibacillus azoreducens and Bacillus sp., were also observed as predominant bacteria in MBR sludge.
纺织业是台湾的主要产业之一，但不幸的是，它会产生有毒且生物降解性低的废水。为了解决这个问题，本研究比较了膜生物反应器（MBR）和序批式反应器（SBR）处理实际纺织印染废水的性能。还通过培养方法和分子生物技术相结合的方式确定了MBR工艺中的微生物多样性。MBR工艺对颜色、化学需氧量（COD）、生化需氧量（BOD）和悬浮固体（SS）的去除效率分别为54%、79%、99%和100%，均高于SBR工艺的相应参数，即51%、70%、96%和60%。MBR出水的上述四个参数均符合台湾环保署的标准，而另一方面，对于SBR工艺，只有颜色和COD符合台湾环保署的出水标准。此外，微杆菌属，特别是金色微杆菌，是最主要的菌群，占分离菌总数的70.6%，可能是印染废水降解的原因。另外两种纺织印染降解菌，偶氮还原类芽孢杆菌和芽孢杆菌属，也被观察到是MBR污泥中的优势菌。
