磁性海泡石-好氧微生物耦合体系处理苯酚-铬复合废水影响因素研究

INFLUENCING FACTOR ON REMOVING OF COMPOSITE WASTEWATER COMPOSED BY PHENOL AND CHROMIUM IN THE COUPLING SYSTEMS OF MAGNETICAL SEPIOLITE AND AEROBE

采用间歇试验,对磁性海泡石-好氧微生物耦合体系处理苯酚-铬复合废水进行了研究。结果表明,磁性海泡石-好氧微生物耦合体系对铬、苯酚的去除率分别是单纯好氧微生物和单纯磁性海泡石体系去除率之和的1.2倍和1.5倍,磁性好氧活性污泥沉降速率是单纯好氧微生物体系沉降速率的3倍以上;当苯酚和铬初始质量浓度分别为310和22 mg/L、磁性海泡石投加量为12 g/L、初始pH为2～9、温度为25℃时,2者去除率都可达90%以上;耦合体系中苯酚的降解速率最快,且降解过程可用1级动力学模型模拟。

The remove of phenol and chromium by magnetical sepiolite cooperating with aerobe was studied through batch experiments. The results showed that the removal rates of phenol, chromium by magnetical sepiolite cooperating with aerobe were 1.5 times, 1.2 times that of magnetical sepiolite and aerobe. Sludge sedimentation rate of the coupling system was above 3 times than initial activated sludge. When initial concentration of phenol and chromium were 310 mg/L, 22 mg/L, the amount of magnetical sepiolite was 12 g/L, initial pH was from 2-9, temperature was 25℃, the removal rates of phenol and chromium were above 90%. The fastest removal rate ofphenot happened in the coupling system, the process of degradation could be simulated by first-order reaction dynamics.