厌氧折流板反应器处理糖蜜酒精废水的研究

为探究厌氧折流板反应器(ABR)对糖蜜酒精实际废水的处理效果,该实验采用已成功处理人工模拟糖蜜酒精废水的ABR,研究了该反应器处理糖蜜酒精工业废水过程中COD和SO42-的去除效果,以及各隔室VFA、pH和S2-的分布规律。实验结果表明,反应器处理糖蜜酒精工业废水,在30 d内达到稳定,COD和SO42-负荷分别为4.8 kg/(m3.d)和0.32 kg/(m3.d),COD和SO42-的去除率分别为83%和98%。反应器内各隔室挥发性脂肪酸(VFA)浓度变化规律与pH值变化规律一致,各隔室硫化物(S2-)浓度较低,其中第4、5隔室的S2-浓度低于40 mg/L。反应器内微生物菌群仍能保持处理模拟废水时形成的多相(产酸硫酸盐还原相和生成硫单质产甲烷相)分离特征,保证了ABR对实际工业废水的处理效率。

Treatment of Molasses Alcohol Wastewater by Anaerobic Baffled Reactor

Removal efficiency of anaerobic baffled reactor(ABR) treating molasses alcohol industrial wastewater was investigated,which had succeeded in treating simulated molasses alcohol wastewater.During the experiments of 30 days,chemical oxygen demand(COD) and sulfate(SO42-)removal efficiency,volatile fatty acid(VFA),pH and sulfide(S2-) distribution in each compartment were studied.Experimental results showed that under the conditions of the load of COD and SO42-as 4.8 kg/(m3.d) and 0.32 kg/(m3.d),the removal efficiency of COD and SO42-were 83% and 98% respectively.The change of VFA concentration and pH in each compartment were basically identical.S2-concentration in each compartment was low,and S2-concentrations in Compartment 4 and 5 were less than 40 mg/L.Multi-phase separation characteristics(acidogenic phase and methanogenic phase,sulfate-reducing phase and sulfur-producing phase)that had formed during simulated molasses alcohol wastewater treatment were remained,which would ensure the removal efficiency of ABR treating molasses alcohol industrial wastewater.