微氧厌氧处理糖蜜酒精废水的限制因素

Limiting Factors of Micro-Aeration and Anaerobic Processes for Molasses Alcohol Wastewater Treatment

研究了膨胀颗粒污泥床(EGSB)在微氧厌氧条件下处理糖蜜酒精废液的效果,确定最佳的氧化还原电位(ORP)、回流比及水力停留时间(HRT)。结果表明ORP为-440 mv、回流比为3∶1、HRT为15 h时,微氧条件下EGSB生物处理系统的处理效果为最佳。在此条件下,COD、SO24-的去除率分别为73.4%、61.3%,出水浓度分别为1 600、185 mg/L。

The effect of micro-aerobic anaerobic processes for molasses alcohol wastewater treatment with expanded granular sludge bed （EGSB） reactor was investigated. The best redox potential （ORP）, reflux ratio and hydraulic retention time （HRT） were determined. The results show when ORP is -440 my, reflux ratio is 3：1 and HRT is 15 h, the best treatment effect can be achieved. Under these conditions, the removal efficiency of COD and SO24- are 73.4 % and 61.3 %, respectively. The effluent concentrations of COD and SO4^2- are 1600 and 185 mg/L, respectively.