生物接触氧化法处理富马酸废水

Treatment of Fumaric Acid-containing Wastewater by Bio-contact Oxidation

采用好氧生物膜接触氧化法处理富马酸废水 ,用盾式纤维填料作为生物的支持物 ,研究生物降解富马酸的原理和不同工艺条件对富马酸废水降解的影响 .实验结果表明 ,富马酸的降解符合一级反应规律 ,最佳的反应气水比为 16 ,控制水力停留时间为 8h .当富马酸废水COD和BOD5分别增至 180 0mg/L和 5 2 0mg/L时 ,处理后的废水的COD约为 2 16mg/L ,BOD5约为 114mg/L ,BOD5与COD的比值为 0 .5 3.在反应器容积负荷提高到原来的 7.6倍 ,运行 4 0h后 ,COD去除率约可恢复到 70 % ,表明生物膜接触氧化反应器具有较大的缓冲能力 。

This paper deals with the treatment of fumaric acid-containing wastewater by using the aerobic biofilm contact oxidation, that is, to degrade the fumaric acid in wastewater by using peltate fibre filling as the biological support, thus expounding the mechanism and technology of treating wastewater. Experimental results indicate that the degradation of fumaric acid wastewater accords with the first order reaction principle; that the optimal ratio of the gas to water is 16 and the hydrodynamic retention time is 8h; that when the inlet COD and BOD 5 are respectively up to 1800 mg/L and 520 mg/L, under stable conditions, the outlet COD and BOD 5 of the reactor are respectively 216 mg/L and 114 mg/L, while the B/C value is 0.53; and that when the cubage load increases by 6.6 times, the COD removal of the reactor will approach to 70% after working for 40 h, which reveals that the reactor for aerobic film contact oxidation is of excellent buffering ability and strong impact resistance ability.