陕西科技大学学报2025，Vol.43Issue(5)：43-50,8.
底栖动物与鱼类环境中三种沉水植物对农村生活污水净化效果的影响
Effects of three submerged plant species in the presence of benthic animals and fish on the purification efficiency of rural domestic sewage
摘要
Abstract
Regarding rural domestic sewage,this study investigates the purification effects of three submerged plants on the water quality of rural domestic sewage under the environment of benthic animals and fish.Three representative submerged plants(Potamogeton crispus,Hydrilla verticillata and Vallisneria natans)were selected,and different types of benthic animals and fish were introduced to investigate their impact on water quality purification.Ex-perimental results demonstrate that under co-existing conditions of benthic fauna and fish as-semblages,three submerged plant species exhibit superior removal efficiencies for TP,COD,NH3-N,and TN.In COD treatment,Vallisneria natans,Hydrilla verticillata,and Pota-mogeton crispus exhibit 15.95％,11.24％,and 5.16％higher removal efficiencies,respective-ly,compared to the control group with fauna alone.All three species maintain TP removal rates exceeding 90％,with Vallisneria natans achieving a TP removal rate of 97.88％.Re-garding TN removal,Hydrilla verticillata＞Vallisneria natans＞Potamogeton crispus.No-tably,Vallisneria natans achieves a 94％NH3-N removal rate,while the Hydrilla verticilla-ta group reaches 91％.The findings confirm the enhanced wastewater treatment performance of these plants in benthic animal-fish coexisting environments.Through entropy-weighted comprehensive evaluation incorporating six indicators(biomass accumulation,stem height in-crement,COD/TP/TN/NH3-N removal rates),Vallisneria natans attains the highest com-prehensive score(0.632),and the ranking of comprehensive scores for different plants was:Vallisneria natans＞Hydrilla verticillata＞Potamogeton crispus.Vallisneria natans has stronger adaptability and purification potential.This research provides a theoretical basis for the subsequent construction of a practical application of the water ecosystem involving sub-merged plants-benthic animals-fish for treating rural domestic sewage.关键词
水生态系统/沉水植物/底栖动物/鱼/农村生活污水Key words
aquatic ecosystem/submerged plants/benthic animals/fish/rural domestic sewage分类
资源环境引用本文复制引用
许杰宁,孟超,柳俊,刘志宏,陈永华..底栖动物与鱼类环境中三种沉水植物对农村生活污水净化效果的影响[J].陕西科技大学学报,2025,43(5):43-50,8.基金项目
国家自然科学基金项目(52000183) （52000183）
湖南省生态环境厅科研项目(HBKT-2021029) （HBKT-2021029）
