【作者】 陈江林； 王勇； 董明； 金若菲； 周集体；

【Author】 Chen Jianglin;Wang Yong;Dong Ming;Jin Ruofei;Zhou Jiti;Key Laboratory of Industrial Ecology and Environmental Engineering,School of Environmental Science and Technology,Dalian University of Technology ( MOE);ACRE Coking & Refractory Engineering Consulting Corporation( Dalian),MCC Group;

【机构】 大连理工大学环境学院工业生态与环境工程教育部重点实验室； 中冶焦耐(大连)工程技术有限公司水务事业部；

【摘要】 采用厌氧/好氧垂直折流膜生物反应器(VT-MBR)对焦化废水进行处理,通过对运行参数进行优化,考察不同参数对反应器运行效果的影响,以及对不同曝气量下的膜污染特性进行了研究。结果表明:进水COD浓度为5000～5200 mg/L,NH3-N浓度为40.00 mg/L,TN浓度为125.99 mg/L,挥发酚浓度为25.29 mg/L,在曝气量为30 L/h,总停留时间HRT为60h,回流比为3∶1的条件下,该工艺对COD、NH3-N、TN、挥发酚的平均去除率分别为95.74%、56.87%、69.58%、98.87%。此外,曝气量的增加,可有效地提高膜的操作周期,延长膜的持续运行时间,但不可逆污染阻力有所增加,不利于膜的长期污染控制。更多还原

【Abstract】 Anaerobic/aerobic vertical baffle membrane bioreactor( VT-MBR,Vertical Tubulant Membrane Biological Reactor)is used to treat coking wastewater. By optimizing the operating parameters,the effect of different parameters on the operating effect of the reactor is investigated,and The characteristics of membrane fouling under different aeration rates were studied.The experimental results show that the influent COD concentration is 5000 ～ 5200 mg/L,the ammonia nitrogen concentration is40. 00 mg/L,the total nitrogen concentration is 125. 99 mg/L,the volatile phenol concentration is 25. 29 mg/L,Under the conditions of an aeration volume of 30 L/h,a total residence time of 2. 5 days,and a reflux ratio of 3 ∶ 1,the average removal rate of COD,ammonia nitrogen,total nitrogen,and volatile phenol by this process is 95. 74%,56. 87%,69. 58%,98. 87%.In addition,as the amount of aeration increases,the operating cycle of the membrane can be effectively increased,the continuous running time of the membrane can be extended,and the irreversible pollution resistance increases,not conducive to long-term pollution control of the membrane.更多还原