工业废水生化处理过程中SMP特性研究
为优化缺氧/好氧(A/O)法工业污水处理工艺,提高出水水质,对处理流程中水中可溶性有机物变化规律进行了深入研究。利用紫外吸收光谱、三维荧光光谱联合区域面积积分方法(FRI)解读A/O工艺过程中,溶解性微生物代谢产物(SMP)的荧光特性,分析了FRI值与COD,NH4^+-N的相关性及SMP组成与有机质的转移代谢规律。结果表明,三维荧光的Ⅰ区、Ⅱ区与COD,NH4^+-N浓度皮尔森相关系数均达到0.97以上;类腐殖质与类蛋白物质是该工艺SMP的主要荧光成分,类腐殖质在好氧段稳定在40×10^6 au·nm^2,其在该A/O工艺出水未能完全去除;类蛋白物质所占总荧光比例由最初的25.43%降低到2...
Saved in:
| Published in | 河北科技大学学报 Vol. 38; no. 5; pp. 499 - 506 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
河北科技大学环境科学与工程学院,河北石家庄 050018
2017
河北省污染防治生物技术实验室,河北石家庄 050018%河北科技大学建筑工程学院,河北石家庄,050018 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1008-1542 |
| DOI | 10.7535/hbkd.2017yx05014 |
Cover
| Summary: | 为优化缺氧/好氧(A/O)法工业污水处理工艺,提高出水水质,对处理流程中水中可溶性有机物变化规律进行了深入研究。利用紫外吸收光谱、三维荧光光谱联合区域面积积分方法(FRI)解读A/O工艺过程中,溶解性微生物代谢产物(SMP)的荧光特性,分析了FRI值与COD,NH4^+-N的相关性及SMP组成与有机质的转移代谢规律。结果表明,三维荧光的Ⅰ区、Ⅱ区与COD,NH4^+-N浓度皮尔森相关系数均达到0.97以上;类腐殖质与类蛋白物质是该工艺SMP的主要荧光成分,类腐殖质在好氧段稳定在40×10^6 au·nm^2,其在该A/O工艺出水未能完全去除;类蛋白物质所占总荧光比例由最初的25.43%降低到2%以下,在缺氧段被大量去除。本研究可快速监测水中COD和有机物大类组分比例,为优化A/O工艺参数提供技术依据。 |
|---|---|
| Bibliography: | water pollution control engineering; anoxic/oxic( A /O ) process; soluble microbial product; ultraviolet-visible (UV- vis) fluorescence excitation-emission matrix spectra (EEM) ; correlation analysis To optimize anoxic aerobic(A/O)wastewater treatment process and improve effluent quality,the variations of soluble microbial products(SMP)in the treatment process is investigated.The fluorescence characteristics of SMP in A/O process are studied through ultraviolet-visible(UV-sis)spectra,fluorescence excitation-emission matrix(EEM),and the multivariate statistical method.The liner relationships between FRI and COD and NH4^+-N are analyzed.The composition and metabolism of the SMPs are studied.The results show that Pearson correlation indices between COD,ammonia nitrogen and normalized integral volumes of regionⅠ andⅡ are both higher than 0.97.The humus-alike and the protein-like substances are the main fluorescence substances of the process.And the concentration of humus-alike remains at 40 × 10^6 au·nm^2 in the a |
| ISSN: | 1008-1542 |
| DOI: | 10.7535/hbkd.2017yx05014 |