摘要
利用氧化塘—河道原位生物修复的方法对广州市古廖涌黑臭水体进行治理,并对治理前、氧化塘处理、原位生物修复河段上游和下游四个不同治理阶段的水体进行水质和浮游动物的监测,试图通过对监测结果的对比分析,确定反应河道黑臭水体不同治理程度的浮游动物群落结构特征和指示种。研究结果表明,在不同的修复阶段,水体CODcr、BOD_5、氮和磷等污染物逐步得到去除,透明度大大提高;浮游动物群落结构发生显著变化,浮游动物群落生物多样性和均匀度提高,浮游动物种类和数量明显增加,尤其是轮虫的种类和数量的变化。水体修复完成后,浮游动物的优势种轮虫由花箧臂尾轮虫(Brachionuscapsuliflorus)转变为角突臂尾轮虫(Brachionus angularis)和Brachionus rubens,枝角类优势种为微型裸腹溞(Moina micrura),桡足类在数量上以无节幼体(Naupii)占绝对优势;可作为重污染河道水体修复的指示浮游动物主要有轮虫的花箧臂尾轮虫、角突臂尾轮虫、Brachionus rubens、螺形龟甲轮虫(Keratella cochlearis)、奇异六腕轮虫(Pedalia mira)、胶鞘轮虫(Collothecasp.),桡足类的无节幼体,枝角类的微型裸腹溞。
A composite bio-remediation technology including oxidation pond and biological restore technology in river course was employed in the treatment of polluted Guliao River of Guangzhou. Monitoring of water quality and zooplankton was conducted to compare population composition and indicator species of zooplankton at four restoration stages of the river： original water, oxidation pond, upstream and downstream areas of the restored river. The results showed that CODer, BODs, nitrogen and phosphorus in the river water were removed gradually during the remediation process, and the diaphaneity was increased greatly, indicating that water quality was improved significantly. After the bioremediation of polluted urban river water, the zooplankton community structure changed significantly. The biodiversity and evenness were raised greatly, and the species and population of zooplankton increased considerably, especially for rotifer. In the restored river water, the predominant species of rotifer changed from Brachionus capsuliflorus to Brachionus angularis and Brachionus rubens, and the predominant species of cladocerans was Moina micrura. Naupii was dominant in quantity in the copepod zooplankton. Indicator zooplankton suitable for remediation of polluted urban river water included： Brachionus capsuliflorus, Brachionus angularis, Brachionus rubens, Keratella cochlearis Pedalia mira, Collotheca sp., Naupii and Moina micrura.
出处
《生态科学》
CSCD
2009年第5期398-403,共6页
Ecological Science
基金
广东省重大科技专项(2004A3040402)
关键词
河道
生物修复
浮游动物
群落结构
变化
urban river
bio-remediation
zooplankton
community structure
variation
