人工水草技术在波罗江生态修复中的应用分析.docx

摘要
随着经济高速发展和城市的快速扩张,城市周围的中小河流受到不同程度的污染,河流生态系统严重受损。目前,河流污染的治理技术主要有物理修复技术、化学修复技术和生物修复技术。污染严重的城市河流普遍存在低透明度、低溶解氧和高悬浮物含量等问题,使得水生动植物修复技术的应用受到严重限制。
人工水草技术是一种具有不受水体透明度,悬浮杂质及不可预见污染负荷冲击等因子限制的新兴生物强化修复技术,它具有低投资、见效快、无二次污染等特点。本文针对重度或中度污染的城市中小河流,构建一种新型人工水草材料栅应用于污染治理,并探讨制定人工水草技术与其他生物修复技术相结合的生态修复城市污染河流的可行性方案。
通过静态试验,选取出人工水草材料的材料及其构型,碳素纤维生态草在静态试验中对 COD、氨氮、总磷、总氮的平均去除率分别为 90%、81%、90%、88%, 对水体中藻类的生长有抑制作用。在对模拟河道生物反应器的动态试验过程中, 溶解氧浓度 4-,水力停留时间 24h 时取出污染物最佳的实验条件。随后,我们根据大理州波罗江的污染现状,探讨了人工水草技术、植物修复技术及充氧技术相结合的生态修复工程方案,提出促进当地生态、社会、经济三方面协调发展的河流治理防治对策。
关键词:城市河流污染,人工水草技术,生态修复
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Abstract
With the rapid economic development and rapid expansion of cities,small rivers around the city are subject to different levels of pollution and river ecosystems are seriously present,there are mainly physical rehabilitation technology,
chemical remediation technology and biological remediation technology for the control of transparency,low dissolved oxygen and high content of suspended matter and other issues are widespread existed in polluted urban rivers
which severely limited the restoration technology of aquatic animals and plants for ecological restoration . Artificial aquatic plants technology is the emerging bio—enhanced remediation technology which can not be limited by the factors of water
transparency and suspended matter and unforeseen pollution load and has the characteristics of low in ,and no secondary pollution.
In this paper,a new type of artificial plants control gate filler was tried to build for severe or moderate urban rivers feasibility program for urban polluted river was tried out by artificial plants and other biological remediation technology.
Through the static test,the fill material of artificial plants and architecture were selected .Carpet of the average removal rate of the COD、ammonianitrogen、TP、 TN were 90%、81%、90%、88%.which can inhibit the growth of algae in water. In the simulation of dynamic channel b