Ibrahim Zaharah, Amin Mohamad Faiz Mohd, Yahya Adibah, Aris Azmi, Umor Noor Azrimi, Muda Khalida, Sofian Nur Shalena
Biological Sciences Department, Universiti Teknologi Malaysia, Skudai 81310, Johor, Malaysia.
Water Sci Technol. 2009;60(3):683-8. doi: 10.2166/wst.2009.440.
Microbial flocs formed from raw textile wastewater in a prototype Aerobic Biofilm Reactor (ABR) system were characterised and studied for their potential use in the treatment of textile wastewater. After 90-100 days of operation, microbial flocs of loose irregular structures were obtained from the reactor with good settling velocity of 33 m/h and sludge volume index (SVI) of 48.2 mL/g. Molecular analysis of the flocs using PCR-amplified 16S rDNA sequence showed 98% homology to those of Bacillus sp, Paenibacillus sp and Acromobacter sp. Detection of Ca(2+)(131 mg/g) and Fe(2+)(131 mg/g) using atomic absorption spectrometer might be implicated with the flocs formation. In addition, presence of Co(2+) and Ni(2+) were indicative of the flocs ability to accumulate at least a fraction of the metals' present in the wastewater. When the flocs were used for the treatment of raw textile wastewater, they showed good removal of COD and colour about 55% and 70% respectively, indicating their potential application.
对原型好氧生物膜反应器（ABR）系统中由纺织原废水形成的微生物絮体进行了表征，并研究了其在纺织废水处理中的潜在用途。运行90 - 100天后，从反应器中获得了结构松散不规则的微生物絮体，其沉降速度良好，为33 m/h，污泥体积指数（SVI）为48.2 mL/g。使用PCR扩增的16S rDNA序列对絮体进行分子分析，结果显示与芽孢杆菌属、类芽孢杆菌属和无色杆菌属的序列具有98%的同源性。使用原子吸收光谱仪检测到Ca(2+)（131 mg/g）和Fe(2+)（131 mg/g），这可能与絮体的形成有关。此外，Co(2+)和Ni(2+)的存在表明絮体有能力积累废水中至少一部分金属。当这些絮体用于处理纺织原废水时，它们对化学需氧量（COD）和颜色的去除效果良好，分别约为55%和70%，表明了它们的潜在应用价值。
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