环境工程学报2025，Vol.19Issue(2)：302-311,10.DOI:10.12030/j.cjee.202409024
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
摘要
Abstract
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.Algae-bacteria 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Key words
algae-bacteria system/river water/water purification/internal and external algae/high-throughput sequencing分类
环境科学引用本文复制引用
叶筱昀,崔贺,余啸,董磊,张欣,陈秀荣..内外源藻-菌体系对河道水质的净化能力分析[J].环境工程学报,2025,19(2):302-311,10.基金项目
国家自然科学基金面上资助项目(52270069) （52270069）
上海市"科技创新行动计划"项目(23DZ1203504) （23DZ1203504）
