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Proceedings of the International Association of Hydrological Sciences An open-access publication for refereed proceedings in hydrology

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Proc. IAHS, 379, 363-369, 2018
https://doi.org/10.5194/piahs-379-363-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Pre-conference publication
05 Jun 2018
Study on the influence on water ecosystem by a lake inflow filtration system
Sushu Wu, Shipei Gao, Xiaodong Hu, Songgan Weng, and Liuchao Guo Jiangsu Hydraulic Research Institute, Nanjing 210017, China
Abstract. Lakes play important roles in the economic-social sustainable development. However, due to unreasonable development and urbanization in recent years, lake water pollution and ecological degradation have occurred in China. The improvement of the lake inflow water quality is very important. A filtration system includes Gravel filtering system, Aquatic plant area and Ecological bag area was established. The test river is one of the typical lake inflow river and located in the river network in the Chang Dang lake, China. Water quality, zooplankton and phytoplankton in the inflow river were observed form July to mid-August in order to analyze the general process. The average removal rate of NH3-N (ammonia nitrogen) TN (total nitrogen) and TP (total phosphorus) is 28.33, 25.76 and 24.43 %, respectively. The Pantle-Buck method was used to evaluate the water quality and the BT index was used to evaluate the nutrition situation. The BT values were reduced by 20 % and the SI pollution index was reduced by 11.8 %. Therefore, a positive effect on the water's ecological restoration was achieved by the filtration system.
Citation: Wu, S., Gao, S., Hu, X., Weng, S., and Guo, L.: Study on the influence on water ecosystem by a lake inflow filtration system, Proc. IAHS, 379, 363-369, https://doi.org/10.5194/piahs-379-363-2018, 2018.
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Short summary
A filtration system includes Gravel filtering system, Aquatic plant area and Ecological bag area was established in a typical lake inflow river. Water quality, zooplankton and phytoplankton in the inflow river were observed form July to mid-August in order to analyze the general process. The Pantle-Buck method was used to evaluate the water quality and the B/T index was used to evaluate the nutrition situation. The results showed that a positive effect by the filtration system.
A filtration system includes Gravel filtering system, Aquatic plant area and Ecological bag area...
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