采用颜色空间表征ANAMMOX启动与冲击过程

发布时间：2018-05-27 00:40

本文选题：厌氧氨氧化 + 颜色空间　；参考：《环境科学》2017年08期

【摘要】：厌氧氨氧化(ANAMMOX)是一种高效、节能的脱氮技术,但是其启动过程和稳定状态的表征目前仍缺乏一个简单易行的方法.针对这一问题,在水质分析的基础上,采用颜色空间重点监测ANAMMOX启动过程中污泥的颜色变化,并借助高通量测序技术对微生物菌群的种类和数量等进行分析.结果表明:(1)根据水质特征,整个启动过程可分为活性迟滞期、活性增强期、负荷提高期、稳定运行期.与此同时,HSV、CIELAB颜色空间的指标,整体上呈现先降低后升高的趋势,然后保持稳定.污泥颜色的变化与水质的变化以及分子生物学特征中优势菌群的变迁一致,因此,三者之间具有相关性,进而表明,采用颜色空间可对ANAMMOX启动过程进行准确表征;(2)当遇到高负荷引起的冲击时,H、S、a~*、b~*、C_(ab)~*等指标与总无机氮(TIN)容积去除速率均呈现降低的趋势,而H_(ab)出现了突升,但均能准确反映出系统的冲击特性.提出了基于颜色空间表征ANAMMOX启动各阶段的方法并建立了一套冲击过程指标体系,为颜色空间在ANAMMOX系统中的应用提供了理论基础.
[Abstract]:Anammox (anammox) is an efficient and energy saving denitrification technology. However, there is still a lack of a simple and practical method to characterize the start-up process and stable state of anammox. Based on the analysis of water quality, the color space was used to monitor the color change of sludge during the start-up of ANAMMOX, and the species and quantity of microbial flora were analyzed by high-throughput sequencing technology. The results show that according to the water quality characteristics, the whole start-up process can be divided into active delay period, activity enhancement period, load increasing period and stable operation period. At the same time, the index of color space of HSV / CIElab shows a trend of decreasing first and then increasing, then maintaining stability. The change of sludge color is consistent with the change of water quality and the change of dominant flora in molecular biological characteristics. The color space can be used to accurately characterize the start-up process of ANAMMOX.) when confronted with the shock caused by high load, the indexes such as ANAMMOX and the removal rate of total inorganic nitrogen (TINT) both show a decreasing trend. However, it can accurately reflect the impact characteristics of the system. This paper presents a method of representing each stage of ANAMMOX startup based on color space and establishes a set of index system of impact process, which provides a theoretical basis for the application of color space in ANAMMOX system.
【作者单位】：西安建筑科技大学环境与市政工程学院西北水资源与环境生态教育部重点实验室;蒙大拿州立大学数学科学系;
【分类号】：X703.1

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