Process stability and the recovery control associated with inhibition factors in a UASB-anammox reactor with a long-term operation
Process stability and the recovery control associated with inhibition factors in a UASB-anammox reactor with a long-term operation
复制标题
DOI：
10.1016/j.biortech.2015.12.003
复制
发表时间：
2016-03-01
影响因子：
11.4
通讯作者：
Li, Yu-You
中科院分区：
文献类型：
--
作者：
Niu, Qigui;He, Shilong;Li, Yu-You
以uasb -厌氧氨氧化反应器为例，对其工艺稳定性进行了900 d的研究。考察了游离氨（FA）和游离亚硝酸（FNA）在三种不同的抑制和回收中的负面影响。测定FNA和FA对NH4+-N、NO2-N和TN去除率的IC10、IC50和IC90（抑制浓度/ 10%、50%和90%活性损失）。在第一次抑制中，FNA-IC10平均为0.67 μ g L (1)， FA-IC10对TN的去除量为4.85 mg L(1)。在第2次抑制中，FNA-IC10为0.44 μ g L (1)， FA-IC10为3.56。而在第3次抑制中，FNA-IC10和FA-IC10均升高，分别为0.50 μ g L(1)和4.42 mg L(1)。为优化uasb -厌氧氨氧化反应器的操作条件，建立了多个抑制和回收率的明确控制区（pH 7.5 ~ 8.5, FA≤10 mg/100 mg NH4+-N, FNA≤0.005 mg/100 mg NO2-N）。(C) 2015 Elsevier Ltd.版权所有。
A UASB-anammox reactor was operated for 900 days to study its process stability. The negative effects of free ammonia (FA) and free nitrous acid (FNA) were investigated over three separate inhibitions and recoveries. The IC10, IC50 and IC90 (inhibitory concentration/a 10%, 50% and 90% activity loss) of FNA and FA responding to the NH4+-N, NO2-N and TN removal efficiency were evaluated. In the 1st inhibition, the average FNA-IC10 observed was 0.67 mu g L (1) and the FA-IC10 for TN removal was 4.85 mg L (1). In the 2nd inhibition, an FNA-IC10 of 0.44 mu g L (1) and an FA-IC10 of 3.56 were found. In the 3rd inhibition, however, both the FNA-IC10 and FA-IC10 were found to have increased, with values of 0.50 mu g L (1) and 4.42 mg L (1), respectively. A clear control region was established for multiple inhibitions and the recoveries, which followed (pH 7.5-8.5, FA below 10 mg/100 mg NH4+-N and an FNA below 0.005 mg/100 mg NO2-N) for the purpose of optimizing the operation conditions of the UASB-anammox reactor. (C) 2015 Elsevier Ltd. All rights reserved.