沉水植物组合对受污染河水的净化与维护效果  

Purification and Maintenance Effect of Submerged Plant Combination on Polluted River

作　　者：王佳 顾永钢 王昊 李兆欣 许多 WANG Jia;GU Yonggang;WANG Hao;LI Zhaoxin;XU Duo(Beijing Institute of Water Science and Technology,Beijing 100048,China;School of Architecture Engineering,North China University of Science and Technology,Tangshan 063210,China)

机构地区：[1]北京市水科学技术研究院,北京100048 [2]华北理工大学建筑工程学院,河北唐山063210

出　　处：《人民黄河》2022年第1期100-105,共6页Yellow River

基　　金：国家水体污染控制与治理科技重大专项(2017ZX07103-001)。

摘　　要：针对受污染河道水体水质净化和长效维护需求,开展黑藻+金鱼藻、穗状狐尾藻+伊乐藻、马来眼子菜+篦齿眼子菜、水盾草+苦草4种沉水植物组合方式的河道水体净化与维护效果研究,结果表明:马来眼子菜+篦齿眼子菜组合对受污染河道的修复效果最佳;对受污染河水的复氧及叶绿素a的削减,沉水植物均表现为促进作用;沉水植物组合的水体净化效果马来眼子菜+篦齿眼子菜组合>黑藻+金鱼藻组合>水盾草组合+苦草>穗状狐尾藻+伊乐藻组合,各植物组合差异不显著;沉水植物组合对受污染河水的净化效果主要受水体营养盐含量影响,不同沉水植物组合方式均有利于河道再生水水质的提升;经沉水植物处理后,COD、氨氮等主要指标可达地表水Ⅳ类水标准。In this experiment, Xiaozhong River, a typical reclaimed water supplement channel in Tongzhou area was chosen as the experimental water source. Four submerged plant combinations of hydrilla verticillata + ceratophyllum demersum, myriophyllum spicatum + elodea canadensis michx, potamogeton wrightii morong + potamogeton pectinatus and cabomba caroliniana A. gray + vallisneria natans(lour.) hara were selected to investigate the purification and maintenance effects of different combinations on reclaimed water under simulated river water. The results show that prolonging the residence time and reducing the amount of treated water are beneficial to the removal of pollutants. At the same time, the combination of myriophyllum spicatum + elodea canadensis michx is the best for the polluted water. The effects of submerged plants on reoxygenation and chlorophyll-a removal on reclaimed water are promoted. Comprehensive analysis shows that myriophyllum spicatum + elodea canadensis michx > hydrilla verticillata + ceratophyllum demersum > potamogeton wrightii morong + potamogeton pectinatus > cabomba caroliniana A. gray + vallisneria natans(lour.) hara. However, there is no significant difference among the plant combinations. At the same time, the purification effect of submerged plant combination on polluted river water is regulated by the nutrient content of water. In general, each combination mode is conducive to the improvement of river regeneration water quality. After treatment, chemical oxygen demand(COD), ammonia nitrogen(NH_(3)-N) and other indicators can reach to class IV water quality standard of surface water environment.

关 键 词：受污染河水 沉水植物组合 水质净化 

分 类 号：TV62[水利工程—水利水电工程] X824[环境科学与工程—环境工程]