厌氧折流板反应器处理糖蜜酒精废水的研究

Treatment of Molasses Alcohol Wastewater by Anaerobic Baffled Reactor

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。

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.