河道人工生态系统在黑臭河道治理中的应用

Application of Artificial Ecosystem in Black-odorous River Treatment

在我国的一些老旧城区,由于历史遗留问题造成污水收集处理率不高及污水直排进入河道的现象,由此形成的河道黑臭问题对周边居民的生活和城市整体形象造成了恶劣影响。为解决河道黑臭问题,基于河道天然生态系统及其演变,衍生出河道人工生态系统理论,并根据该理论在温州乐清某未完全截污河道上进行工程实践——在河道内构建人工生态系统。第三方检测机构水质检测结果表明,工程实施半年后,水质由劣Ⅴ类上升为Ⅳ类,治理效果显著。

In some old urban areas in China,the problem caused by history results in a relatively low efficiency for sewage collection and treatment.In addition,there exists phenomenon which allows sewage to be directly discharged into the river.The problem of black-odorous rivers caused thereby has detrimentally influenced the life of residents who live in the surrounding areas and the overall image of these cities.In order to solve the aforementioned problem,based on the theory of natural river ecosystems and their evolution process,this paper derives the theoretical system concerning the artificial river ecosystems.Moreover,on the basis of this theory,engineering practice has been undertaken on the incompletely intercepted river-constructing artificial ecology in the river channel,which is located in Yueqing,Wenzhou.An artificial ecosystem was constructed in the river.The results from a third-party testing institution show that the water quality in the river has improved significantly from the inferior categoryⅤto the categoryⅣafter a treatment which lasts for half-year.Thus,the effectiveness of the treatment is remarkable.