| Cite this article: | 胡韵爽,李绍飞,刘然,等.生物组合技术净化试验及其在北运河城区段示范工程的应用研究[J].灌溉排水学报,0,():-. |
| HuYunShuang,LiShaoFei,LiuRan,et al.生物组合技术净化试验及其在北运河城区段示范工程的应用研究[J].灌溉排水学报,0,():-. |
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| DOI： |
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| Study on Purification Experiment of Biological Combination Technology and Its Application in North Canal City Demonstration Project |
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HuYunShuang,LiShaoFei,LiuRan,et al
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1.Tianjin Agricultural University;2.Tianjin Water Conservancy Research Institute
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| Abstract: |
| 【Objective】According to the water quality characteristics of the North Canal City section, it is of great significance to develop biological and ecological purification technology and build demonstration projects.【Method】Experiments were carried out to compare the purification effect of four different aquatic plants, artificial aquatic plants, aeration -- aquatic plants -- artificial aquatic plants on the water quality of The North Canal, and the combined technology was applied to the demonstration project. 【Result】The removal effect of bio-ecological combined technology was better than that of artificial aquatic plants, aquatic plants and other single technology. The demonstration project built 1.1km downstream of the seventh sewage outlet in Wuqing City section has been running steadily for 10 months. Except for NH+4-N in August 2020, the NH+4-N and TP in the outflow water in other months have reached the surface water Ⅴ standard，and the reduction of NH+4-N and TP by floating bed per unit area is 0.36 kg/m2 and 0.073 kg/m2, respectively. 【Conclusion】Bio-ecological combination technology can enhance the removal effect of nitrogen and phosphorus in winter and summer, and form complementary advantages. Especially in winter, it can overcome the disadvantages of plant wilt and poor removal effect, and realize the effective purification of NH+4-N and TP in low temperature environment, which is suitable for the application of water quality improvement and landscape restoration in north slow river. |
| Key words: biological ecology; combination technology; aquatic plants;artificial water grass |
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