内外源藻-菌体系对河道水质的净化能力分析  

Analysis of purification capacity of river water quality by internal and external source algae-bacteria system

作　　者：叶筱昀 崔贺 余啸 董磊 张欣 陈秀荣[1] YE Xiaoyun;CUI He;YU Xiao;DONG Lei;ZHANG Xin;CHEN Xiurong(School of Resources and Environmental Engineering,East China University of Science and Technology,Shanghai 200237,China;Shanghai Municipal Engineering Design Institute(Group)Co.Ltd.,Shanghai 200092,China)

机构地区：[1]华东理工大学资源与环境工程学院,上海200237 [2]上海市政工程设计研究总院(集团)有限公司,上海200092

出　　处：《环境工程学报》2025年第2期302-311,共10页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金面上资助项目(52270069);上海市“科技创新行动计划”项目(23DZ1203504)。

摘　　要：将菌藻共生体系运用于河流污染水净化的技术研究并不多见,但其关乎生态效益和人体健康。分别运用微藻体系和活性污泥与斜生四链藻构成的藻菌体系净化微污染和高污染的河道水,结果表明藻菌体系净化效果优于微藻体系。藻菌体系能将劣Ⅴ类水质提升至Ⅱ类水质。将藻菌体系运用于示范装置的研究表明,运行15 d后,河水中的DO≥12 mg·L^(-1),运行30 d后,耗氧有机物、TP、TN和NH3-N的降解率至少可达64.98%、69.74%、61.01%和84.07%,并具有可持续的降解性能。运用高通量测序技术分析了藻菌体系群落结构变化,测序结果表明,四链藻属(Tetradesmus sp.)的相对丰度从4 d的4.80%增加到20 d的44.80%,同时,绿藻门中还出现了其余藻类丰度的增加,分别是相对丰度为2.40%的近头状尖胞藻(Raphidocelis sp.)、2.50%的单针藻(Monoraphidium sp.)、2.20%的衣藻(Chlamydomonas sp.),这些藻来源于活性污泥中的内源藻孢子。研究结果为构建更稳定的菌藻共生系统用于各类河道水质净化提供了理论和数据支撑。It’s not common for the technical research on the application of bacterial and algal symbiotic systems to purify the polluted river water,while these technologies are related to the ecological efficiency and human health.Both the microalgae system and algae-bacteria system with activated sludge and Tetradesmus obliquus were used to purify micro-polluted and highly polluted river water,respectively,and the results showed that the purification effect of the algal-bacterial system was better than that of the microalgae system.Algaebacteria system could improve the water quality from the inferior class V standard to class II one.The running of the algal-bacterial system demonstration device showed that the DO in the river water was≥12 mg·L^(-1) after 15 d of operation,and the degradation rates of oxygen consumption organic,TP,TN,and NH3-N could reach at least 64.98%,69.74%,61.01%,and 84.07%after 30 d of operation,respectively,even the sustainable degradation performance was maintained afterwards.Changes in the community structure of the algal-bacterial system were analyzed using high-throughput sequencing technology,and the sequencing results showed that the relative abundance of Tetradesmus sp.increased from 4.80%at 4 d to 44.80%at 20 d.At the same time,an increase in the abundance of the remaining algae in the Chlorophyta phylum also occurred,including Raphidocelis sp.,Monoraphidium sp.,and Chlamydomonas sp.with the relative abundance of 2.40%,2.50%and 2.20%.These algae originated from endogenous algal spores in the activated sludge.The results of the study provide the theoretical and data support for the construction of more stable bacterial-algal symbiotic systems for purifying water quality in various types of river.

关 键 词：藻菌体系 河道水 水质净化 内外源藻 高通量测序 

分 类 号：X703[环境科学与工程—环境工程]