铁负载活性焦微电流SBBR降解煤热解废水酚类污染物的效能研究

为了有效提高煤热解废水中酚类污染物的去除效能，以活性焦载体、纳米级四氧化三铁载体及空白组作为对照，通过研究4组反应器（R0为空白组，R1、R2、R3中分别加入纳米级四氧化三铁、活性焦、Fe-LAC颗粒）对不同浓度总酚、COD、特征污染物的降解效能，以及对反应器中活性污泥的表征，探究了载体微电流对污染物的降解能力.结果表明，Fe-LAC载体反应器R3在高浓度有机负荷下对COD的平均降解率达到88.91%，而反应器R1的COD平均降解率为79.50%，反应器R2为84.02%，对照组R0低于60%；Fe-LAC载体反应器对总酚的降解率在95%以上，且污泥粒径均匀致密，生物膜增厚，污泥体积指数（SVI）低于100 mL·g^-1，PN/PC高达18.8，使得反应器具有更稳定的结构和更强的抗毒性，为煤化工废水零排放的实现提供了一种切实高效的新途径.

Study on the degradation efficiency of phenolic pollutants in coal pyrolysis wastewater by iron-loaded active coke microcurrent SBBR

In order to effectively improve the removal efficiency of phenolic pollutants from coal pyrolysis wastewater, the degradation of pollutants by microcurrent of iron-loaded active coke(Fe-LAC)was investigated, active coke, nanometer ferric oxide and blank group were used as contrast groups. The results showed that Fe-LAC carrier could form galvanic cells in wastewater, form a micro-electric field, and promote the electrophoretic migration of organic matter, so as to improve the degradation efficiency of microorganisms, and the degradation rate of total phenols in wastewater was over 95%.At the same time, it can promote the growth of microorganisms, enhance the flocculation capacity of microorganisms, and maintain the stability of the reactor, so as to provide a practical and efficient new approach for the zero-discharge project of coal chemical wastewater.