Xu Wei-Chao, Wu Cui-Ping, Zhang Yu-Xiu, Zhang Qi, Zhang Yi-Ming
School of Chemical and Environmental Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China.
Huan Jing Ke Xue. 2017 May 8;38(5):2030-2035. doi: 10.13227/j.hjkx.201610236.
Quinoline is one of the common refractory organic pollutants in coking wastewater. An aerobic bacterial strain KDQ3 capable of utilizing quinoline as the sole source of carbon, nitrogen and energy was isolated from activated sludge of a coking wastewater treatment plant. The morphological properties and the 16S rDNA sequence identified KDQ3 as sp.. The optimized temperature and initial pH for quinoline degradation were 37℃ and 7.0-8.0, and the degradation kinetics fit with Haldane's model. KDQ3 could degrade 200 mg·L quinoline in the presence of 10.4 mg·L hexavalent chromium. In addition, KDQ3 was able to degrade quinoline in real coking wastewater of aerobic tank and improve the removal of COD, indicating that KDQ3 had the potential of bioaugmentation for removal of quinoline from coking wastewater.
喹啉是焦化废水中常见的难降解有机污染物之一。从某焦化废水处理厂的活性污泥中分离出一株好氧细菌菌株KDQ3，它能够以喹啉作为唯一的碳、氮和能量来源。通过形态学特性和16S rDNA序列鉴定KDQ3为[具体菌种名称未给出]。喹啉降解的最适温度和初始pH分别为37℃和7.0 - 8.0，降解动力学符合哈代模型。KDQ3在10.4 mg·L六价铬存在的情况下能够降解200 mg·L喹啉。此外，KDQ3能够降解好氧池中实际焦化废水中的喹啉并提高化学需氧量（COD）的去除率，这表明KDQ3具有对焦化废水中喹啉进行生物强化去除的潜力。
