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| Effects of low temperature environment on wastewater treatment in constructed wetland and strengthening measures |
| Jing Xi1, Guo Jie1, Luo Xiao2, Gong Jiaxing1 |
| 1. Hebei University of Science and Technology, School of Environmental Science and Engineering, Shijiazhuang 050018,China; 2. Hebei University of Science and Technology, School of Environmental Science and Engineering, Pollution Prevention Biotechnology Laboratory of Hebei Province, Shijiazhuang 050018, China |
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Abstract In order to achieve the goal of stable and efficient operation of the constructed wetland throughout the year, a series of strengthening measures were discussed based on the analysis of the influence of low temperature environment on the operation effect of the constructed wetland system. The purification capacity of the constructed wetland was improved through reasonable plant configuration, biological enhancement, substrate selection, covering insulation and increasing dissolved oxygen in water. The results show that these measures can improve the ecological diversity and biomass of wetlands, and improve the degradation capacity of wetland systems. It is proposed that the relationship between macro and micro should be analyzed on the basis of in-depth water purification mechanism in the future, so as to strengthen the understanding of the operating mechanism of wetland system, in order to provide reference for the application and promotion of constructed wetlands in the cold areas of north China.
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