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首页> 外文期刊>Journal of Hazardous Materials >Effects of nickel(II) addition on the activity of activated sludge microorganisms and activated sludge process
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Effects of nickel(II) addition on the activity of activated sludge microorganisms and activated sludge process

机译：镍（II）添加对活性污泥微生物活性和活性污泥过程的影响

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摘要

The effects of Ni(II) in a synthetic wastewater on the activity of activated sludge microorganisms and sequencing batch reactor (SBR) treatment process were investigated. Two parallel lab-scale SBR systems were operated. One was used as a control unit, while the other received Ni(H) concentrations equal to 5 and 10 mg/l. The SBR systems were operated with FILL, REACT, SETTLE, DRAW and IDLE modes in the time ratio of 0.5:3.5:1.0:0.75:0.25 for a cycle time of 6h. The addition of Ni(II) into SBR system caused drastically dropped in TOC removal rate (k) and specific oxygen uptake rate (SOUR) by activated sludge microorganisms due to the inhibitory effects of Ni(II) on the bioactivity of microorganisms. The addition of 5 mg/l Ni(II) caused a slight reduction in TOC removal efficiency, whereas 10 mg/l Ni(II) addition significantly affected the SBR performance in terms of suspended solids and TOC removal efficiency. Termination of Ni(II) addition led to almost full recovery of the bioactivity in microorganisms as shown in the increase of specific oxygen uptake rate (SOUR) and SBR treatment performance.
机译：研究了合成废水中镍（II）对活性污泥微生物活性的影响，并研究了顺序分批反应器（SBR）的处理过程。运行了两个并行的实验室规模的SBR系统。一个用作控制单元，另一个用作Ni（H）浓度等于5和10 mg / l。 SBR系统以FILL，REACT，SETTLE，DRAW和IDLE模式在0.5：3.5：1.0：0.75：0.25的时间比率下运行，循环时间为6小时。 Ni（II）对SBR系统的添加会导致活性污泥微生物的TOC去除率（k）和比氧吸收率（SOUR）急剧下降，这是因为Ni（II）对微生物的生物活性具有抑制作用。添加5 mg / l Ni（II）会导致TOC去除效率略有降低，而添加10 mg / l Ni（II）会显着影响SBR在悬浮固体和TOC去除效率方面的性能。终止Ni（II）的添加导致微生物中生物活性的几乎完全恢复，如比氧吸收率（SOUR）和SBR处理性能的提高所显示。

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