Removal of anthraquinone reactive dye from wastewater by batch hydrolytic-aerobic recycling process
Removal of anthraquinone reactive dye from wastewater by batch hydrolytic-aerobic recycling process
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DOI：
10.1016/j.seppur.2009.03.018
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发表时间：
2009-06-02
影响因子：
8.6
通讯作者：
Lu, Yinghua
中科院分区：
文献类型：
--
作者：
Wang, Haitao;Li, Qingbiao;Lu, Yinghua
采用生物膜水解-好氧循环工艺（循环工艺）对600 mg/L蒽醌染料活性蓝19（RB 19）人工合成废水进行降解研究。在循环速率为10 mL/min时，24 h内COD和RB 19的去除率分别可达91%和90%，循环速率为8 mL/min和10 mL/min时，COD和RB 19的平均去除率分别达到最大值109.9 mg/L h和23.6 mg/L h。试验结果还表明，随着循环倍率的增加，水解反应器和好氧反应器对RB 19的去除率均呈下降趋势，而好氧反应器对COD的去除率则呈上升趋势。当循环速率为10 mL/min时，废水中挥发性脂肪酸（VIA）含量最低，pH值明显高于其他循环速率。当循环速率大于5 mL/min时，VFA/碱度比值均小于0.6，说明水解微生物的活性未受到抑制，循环过程保持稳定。结果表明，水解-好氧循环工艺成功地解决了水解过程中的过酸化和抑制问题，有效地提高了RB 19和COD的去除率。(c)2009爱思唯尔有限公司版权所有。
The degradation of anthraquinone dye Reactive Blue 19 (RB19) of 600 mg/L in the synthetic wastewater was studied using a biofilm hydrolytic-aerobic recycling process (recycling process). The COD (chemical oxygen demand) and RB19 removal efficiency could be up to 91% and 90% in 24 h, respectively, with the recycling rate being 10 mL/min. When the recycling rates were 8 mL/min and 10 mL/min, the average COD and RB19 removal rate reached the largest values of 109.9 mg/L h and 23.6 mg/L h, respectively. The results also showed that RB19 removal rate in both the hydrolytic and aerobic reactor declined whereas COD removal rate in the aerobic reactor increased with increasing of recycling rate. With the recycling rate of 10 mL/min, VIA (volatile fatty acid) in the wastewater was of the lowest value and pH value was apparently higher than those with other recycling rates. The ratios of VFA/alkalinity were all less than 0.6 when the recycling rate was more than 5 mL/min, which indicated that the activity of hydrolytic microorganisms had not been inhibited and the recycling process maintained a stable condition. Results in this work shown that hydrolytic-aerobic recycling process successfully dealt with the issues of over-acidification and inhibition in the hydrolysis process and effectively enhanced the removal efficiencies of RB19 and COD. (c) 2009 Elsevier B.V. All rights reserved.