Performance and model of a novel multi-sparger multi-stage airlift loop membrane bioreactor to treat high-strength 7-ACA pharmaceutical wastewater: Effect of hydraulic retention time, temperature and pH
Performance and model of a novel multi-sparger multi-stage airlift loop membrane bioreactor to treat high-strength 7-ACA pharmaceutical wastewater: Effect of hydraulic retention time, temperature and pH
复制标题
新型多分布器多级气升环路膜生物反应器处理高浓度 7-ACA 制药废水的性能和模型：水力停留时间、温度和 pH 值的影响
DOI：
10.1016/j.biortech.2014.05.108
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发表时间：
2014-09-01
影响因子：
11.4
通讯作者：
Ren, Nan-qi
中科院分区：
文献类型：
--
作者：
Chen, Zhao-bo;He, Zhang-wei;Ren, Nan-qi
在本研究中，平行设置了三个新型多分布器多级气升环路膜生物反应器（Ms(2)ALMBR），分别在不同的水力停留时间、温度和pH值下处理合成高浓度7-ACA制药废水。 200天运行期间，平均COD去除率分别为94.96%、96.05%和93.9%。而平均 7-ACA 去除效率分别为 66.44%、59.04% 和 59.60%。最佳条件为HRT、温度和pH分别为10小时、15-35℃和7-9。此外，还探讨了污泥特性和微生物耐药性。结果表明，不同的温度和 pH 值通过显着影响 MLSS 浓度和 β-内酰胺酶活性来影响污染物的去除。此外，还开发了基于多项式和线性回归技术的数学统计模型，用于探索Ms(2)ALMBR系统的HRT、温度和pH变化与MLSS浓度、β-内酰胺酶活性和污染物去除之间的内在关系。 (C) 2014 Elsevier Ltd. 保留所有权利。
In this study, three novel multi-sparger multi-stage airlift loop membrane bioreactors (Ms(2)ALMBRs) were set up in parallel for treating synthetic high-strength 7-ACA pharmaceutical wastewater under different HRTs, temperatures and pHs, respectively. During the 200-day operating time, average COD removal efficiencies were 94.96%, 96.05% and 93.9%. While average 7-ACA removal efficiencies were 66.44%, 59.04% and 59.60%, respectively. The optimal conditions were 10 h, 15-35 degrees C and 7-9 for HRT, temperature and pH, respectively. Moreover, the sludge characteristics and microorganism drug-resistances were explored. Results showed that different temperatures and pHs influenced contaminant removals by affecting MLSS concentration and beta-lactamase activity significantly. In addition, mathematical statistical models, built on the polynomial and linear regression techniques, were developed for exploring the inner relationships between HRT, temperature and pH changes and MLSS concentrations, beta-lactamase activities and contaminant removals of the Ms(2)ALMBR system. (C) 2014 Elsevier Ltd. All rights reserved.