生态环境学报Issue(11)：1821-1825,5.
微量金属对硫酸盐有机废水厌氧处理颗粒污泥活性的影响
The Influence of Trace Metal on Granular Sludge of Anaerobic Treating Sulphate Organic Wastewater
摘要
Abstract
Bach tests in anaerobic bioreactor were conducted to investigate the effects of trace metals (Fe2+, Co2+, Ni2+) on the removal efficiencies of chemical oxygen demand (COD) and sulfate along with methane production rate of anaerobic granular sludge. The artificial sulfate organic wastewater was the influent water with sucrose as the carbon source, and the seeding sludge was from a lab-scale running up-flow anaerobic sludge blanket (UASB). The results showed that both COD removal efficiency and methane production rate increased with increasing mass concentrations of trace metals (Fe2+0 to12 mg·L-1, Co2+0 to 0.5 mg·L-1, Ni2+0 to 0.6 mg·L-1, respectively). However, the sulfate removal efficiency showed downtrend with increasing mass concentrations of Co2+from 0 to 0.5 mg·L-1 and Ni2+from 0 to 2.0 mg·L-1, respectively. And it slightly increased with increasing mass concentration of Fe2+from 0 to12 mg·L-1. Thus, the addition of Fe2+ could activate the activity of methane production bacteria (MPB) and sulfate-reducing bacteria (SRB). However, the addition of Co2+ and Ni2+ have contrary effects which was realized by activation on MPB and inhibition on SRB, respectively. The results of this study provided a theoretical guidance for the treatment of sulfate organic wastewater.关键词
硫酸盐有机废水/厌氧处理/微量金属/颗粒污泥/生物活性Key words
sulfate organic wastewater/anaerobic treatment/trace metal/granular sludge/biological activity分类
资源环境引用本文复制引用
蒋永荣,刘可慧,麒麟,刘成良,李天煜,林金彪,王春锋,袁碟..微量金属对硫酸盐有机废水厌氧处理颗粒污泥活性的影响[J].生态环境学报,2014,(11):1821-1825,5.基金项目
国家自然科学基金项目(51368011)；广西自然科学基金项目(2012GXNSFAA053189)；桂林市科学研究与技术开发计划项目(20140121) （51368011）
