微量元素Fe^(2+)对EGSB反应器处理含SO_4^(2-)废水的影响

Effect of Trace Elements of Fe^(2+) on Treatment of SO_4^(2-) Wastewater by EGSB Reactor

在膨胀颗粒污泥床(EGSB)反应器处理含SO42-废水中,选定COD/SO42-=2,上流速度U为0.51m.d-1,进水量Q为1L.d-1,水力停留时间HRT为0.9d,研究微量金属元素Fe2+在不同浓度条件下对降解废水中SO42-的影响,实验结果表明,添加适量的微量元素Fe2+能促进厌氧污泥颗粒化,从而提高SO42-降解率。

In the treatment process of SO42-wastewater by the expanded granular sludge bed（EGSB） reactor,selecting COD/SO42-=2,the up speed was 0.51 m·d-1,water inflow was 1 L·d-1,hydraulic retention time was 0.9 d,To research the effect of the trace metal elements Fe2＋ in different concentration condition on SO42＋ degradation in waste water.The experimental results showed that the addition of appropriate amount of trace elements Fe2＋ could promote anaerobic sludge grainy treatment,so as to improve SO42＋ degradation rate.