ABR+生物接触氧化法处理高浓度有毒有机废水

High-concentrated Organic and Poisoning Wastewater Treatment by ABR and Biological Contact Oxidation Combined Process

本文采用ABR+生物接触氧化组合工艺处理含苯酚的高COD有毒有机废水,实验研究了ABR反应器的抗毒性及对COD、苯酚和NH3-N的处理效果。实验结果表明:废水COD和苯酚的去除主要发生在厌氧阶段;在苯酚质量浓度1 000 mg/L左右时,ABR反应器和常规厌氧反应器的处理效率均出现明显的下降趋势,但ABR反应器对苯酚的耐受浓度明显高于常规厌氧反应器;相比于常规厌氧反应器,ABR反应器推流式的特性实现了产酸和产甲烷优势菌群的分离,具有较高的COD、苯酚的去除率和较强的抗毒性;对NH3-N的去除,ABR反应器的强化效果不明显。

The combined process of ABR and biological contact oxidation is used to treat organic wastewater which contains phenol and high COD. The toxicity- resistance and the removal efficiencies of COD,phenol and NH3- N of ABR have been experimentally studied. The results show that the removal of COD and phenol mainly happens in the anaerobic stage. When the mass concentration of phenol is 1 000 mg / L,the removal efficiencies of COD and phenol of the ABR and traditional anaerobic reactor are both decreased obviously,but the toxicity- resistance ability of ABR reactor is higher than that of the traditional anaerobic reactor. The hydraulic characteristic of ABR makes the acidogenic bacteria and methanogen separated,resulting in its stronger toxicity- resistance ability and higher removal efficiencies of COD and phenol than that of the traditional anaerobic reactor. However,the NH3- N removal efficiency can＇t be strengthened obviously by the ABR reactor.