生态环境学报2016，Vol.25Issue(8)：1387-1394,8.DOI:10.16258/j.cnki.1674-5906.2016.08.020
粉煤灰对硫酸盐型厌氧氨氧化驯化过程的影响
The Effect of Fly Ash on Domestication of Sulfate-dependent Anaerobic Ammonium Oxidation
摘要
Abstract
Two groups of parallel up-flow anaerobic sludge bed (UASB) reactor, which had started from nitrite-dependent anaerobic ammonium oxidation (N-ANAMMOX) were used in order to investigate the effect of fly ash on domestication of sulfate-dependent anaerobic ammonium oxidation (S-ANAMMOX). Fly ash (as carrier) was added in one UASB (U2) and the other one without fly ash as control (U1). The changes of ammonium and sulfate removal efficiency from the process of N-ANAMMOX transformed to S-ANAMMOX, and the characteristics of granular sludge were concerned. The results showed that, the removal efficiency of ammonium and sulfate in U1 were better than in U2 as the operation process at the early stage (1~123 d); while the result was exact oppositeas the operation process at the later stage (124~144 d). On the 144th day, the mass concentration of ammonium and sulfate were 140 mg∙L-1 and 533 mg∙L-1 in these two UASB, respectively. The removal rate of ammonium and sulfate in U2 were 86.68 mg∙L-1∙d-1and 94.34 mg∙L-1∙d-1, respectively; and the corresponding value of U1 were 67.65 mg∙L-1∙d-1 and 22.64 mg∙L-1∙d-1, respectively. The results from scanning electron microscopy (SEM) suggested that the sludge particle size in U1 was larger but less tight as compared to U2 at the end of the experiment. Furthermore, the granular sludge surface of U1 was coated with considerable secretions and element sulfur particles, however, this phenomenon was not obvious in U2. Our research results explicated that fly ash will promote the reaction of S-ANAMMOX at a certain substrate concentration after a period time of domestication.关键词
粉煤灰/硫酸盐型厌氧氨氧化/脱氮除硫/颗粒污泥/载体Key words
fly ash/sulfate-dependent anaerobic ammonium oxidation/nitrogen and sulfur removal/granular sludge/support分类
资源环境引用本文复制引用
蒋永荣,秦永丽,刘可慧..粉煤灰对硫酸盐型厌氧氨氧化驯化过程的影响[J].生态环境学报,2016,25(8):1387-1394,8.基金项目
国家自然科学基金项目（51368011）,广西自然科学基金项目（2016GXNSFAA380046）,岩溶生态与环境变化研究广西高校重点实验室项目 （）
