生物/生态技术协同修复城市景观水体的现场试验研究
Field study on usage of bio-eco treatment of circulation & purifying system for polluted scenic water in urban areas
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摘要: 针对武汉动物园鹤岛水体的污染状况，结合景观建设，采用生物滤罐和生态型岸边带相结合的生物/生态技术对该水体进行循环净化。实验结果表明，该净化系统对鹤岛水体水质有很大的改善作用，解决了以前水体混浊、夏季水体中藻类浓度高的问题，景观功能明显提高。该系统中生物滤罐起主要作用，夏季净化效果较好，对于总氮（TN）、总磷（TP）、COD、溶解态氮、氨态氮都有很好的净化效果；冬季效果略差，以过滤作用为主，对溶解态污染物去除作用微弱。岸边带在冬季基本没有净化效果，夏季则净化作用较为显著。Abstract: Aiming at the pollution status of the crane island pond in Wuhan Zoo which was an isolated scenic water, a bio-eco treatment of circulation & purifying system with bio-filter and riparian was adopted. The result indicated that this system could enhance the water quality efficiently. The run of this purifying system solved the problems of turbidity and algae booming in summer, and improved the visual quality. The bio-filter played a dominant role in this purifying system because of its high ability to remove total nitrogen (TN), total phosphorus (TP), COD, dissolved total nitrogen (DTN), and NH4-N, especially in summer. In winter, the bio-filter’s purifying ability decreased, and took effect through filtration. For the other part of the integrated system, the riparian had a weak effect on enhancing the water quality, especially in winter.
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Key words:
- scenic water /
- purifying /
- bio-filter /
- riparian
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