Zhong Chun-Ying, Chen Hong-Gao, Cao Gang, Wang Jun, Zhou Jian-Gang
School of Environmental Engineering, Wuhan Textile University, Wuhan 430073, China E-mail:
Water Sci Technol. 2016;73(4):707-15. doi: 10.2166/wst.2015.549.
A novel bioflocculant MBF057 produced by a salt-tolerant Haloplanus vescus HW0579 was investigated in this study. The effects of culture conditions such as initial pH, inoculum size, and chemical oxygen demand (COD) of K-acid wastewater on MBF0579 production were studied. The result showed that 8.09 g/L purified MBF0579 was extracted with the following optimized conditions: 780 mg/L COD of K-acid wastewater as carbon source, inoculum size 12.5%, and initial pH 7.0. The biopolymer contained 78.6% polysaccharides and 21.1% proteins. The highest flocculating rate of 81.86 and 95.07% for the COD and chroma of acid brilliant scarlet gelb rot (yellow/red, GR) dye wastewater were achieved at a dosage of 150 mg/L, pH 2.0 and contact time 100 min. Overall, these findings indicate bioflocculation offers an effective alternative method of decreasing acid brilliant scarlet GR during dye wastewater treatment.
本研究对耐盐性卤平菌HW0579产生的新型生物絮凝剂MBF057进行了研究。研究了初始pH值、接种量和K酸废水化学需氧量（COD）等培养条件对MBF0579产量的影响。结果表明，在以下优化条件下提取了8.09 g/L的纯化MBF0579：以780 mg/L COD的K酸废水为碳源，接种量12.5%，初始pH值7.0。该生物聚合物含有78.6%的多糖和21.1%的蛋白质。在150 mg/L的投加量、pH值2.0和接触时间100 min的条件下，酸性艳红GR（黄/红，GR）染料废水的COD和色度的最高絮凝率分别达到81.86%和95.07%。总体而言，这些研究结果表明生物絮凝为染料废水处理过程中降低酸性艳红GR提供了一种有效的替代方法。
