Co对腈纶废水厌氧处理效果的影响

利用厌氧反应装置,以腈纶废水为处理对象,通过2组试验,对比了微量金属(Co)投加前后废水中有机物降解情况、累积产气量、三维荧光光谱图以及微生物生长情况,研究了微量Co对腈纶废水厌氧处理效果的影响.结果表明:当Co的投加浓度〔以ρ(CoCl2)计〕为1.0 mg/L时,CODCr去除率达71.7%,累积产气量达到22.5 mL;当Co的投加浓度超过10 mg/L时,CODCr去除率为20%左右,累积产气量8.5 mL,未投加Co元素的空白对照组CODCr去除率为43.1%,累积产气量为10 mL.显示微量Co对腈纶废水厌氧生物降解具有一定的促进作用. 

Effects of Cobalt on the Anaerobic Treatment of Acrylic Fiber Wastewater

The effects of trace cobalt on the anaerobic treatment of acrylic fiber wastewater was investigated by comparing the organic degradation,cumulative gas production,three-dimensional fluorescence spectrum and microbial growth in two treatments with and without cobalt in an anaerobic reactor.The results show that with the addition of 1.0 mg/L cobalt,the removal rate of CODCr was 71.7% and the cumulative gas production was 22.5 mL.When the concentration of cobalt exceeded 10 mg/L,the removal rate of CODCr became 20% and the cumulative gas production was 8.5 mL;However,in the treatment without application of cobalt,the removal rate of CODCr was 43.1% and cumulative gas production was 10 mL.Therefore,proper addition of cobalt can promote anaerobic biodegradation in acrylic wastewater.