Abstract
In this study, chlorpyrifos degradation under different operating conditions was examined in a constructed wetland system, and the degradation conditions were optimized. Additionally, the microbial community structure in wetland system was analysed by high-throughput sequencing. The results are that the best chlorpyrifos degradation conditions in the constructed wetland system were pH = 8.69, sand/natural soil ratio of 1.36:1, and a planting density of 173.73/m2. The actual chlorpyrifos degradation rate was 75.68%. Moreover, Proteobacteria, Bacteroidetes and Actinobacteria; Gemmatimonas, Gp6 and Parcubacteria and so on had gradually become the main chlorpyrifos degraders of dominant phylum and genera with extension in a constructed wetland system.
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