Effects of different plant combinations on purification effect of simulated wastewater treatment plant tail water and root microbial communityChinese Full TextEnglish Full Text (MT)
CHEN Siwei;ZHENG Haisu;ZHANG Shengman;HAN Zheng;SHAO Liu;HE Wenhui;GAO Yang;WANG Langang;HE Peimin;College of Marine Ecology and Environment, Shanghai Ocean University;Water Environment ＆ Ecology Engineering Research Center of Shanghai Institution of Higher Education, Shanghai Ocean University;Shanghai Taihe Water Environment Technology Development Co., Ltd.;
Abstract: To elucidate the influence of different aquatic plant configurations on the purification effect of wastewater treatment plant tail water, an experiment was performed to evaluate the influence of different emergent aquatic plants（Myriophyllum verticillatum + Iris sibirica, M. verticillatum + Acorus tatarinowii, and M. verticillatum + Thalia dealbata） compared to the plant-free control. After 40 days, the best removal of total nitrogen, total phosphorus, and nitrate nitrogen was found using M. verticillatum + I. sibirica, with removal rates of 94.7%, 96.2%, and 98.9%, respectively. The highest biomass growth rate（66.4%） was also found using this plant combination. High-throughput sequencing results showed that the root microbial community structure was different among different plant combinations. The combination of M. verticillatum and I. sibirica had the highest ACE richness index in terms of root microorganisms. The highest relative abundances of denitrifying bacteria and dephosphorizing bacteria were found using M. verticillatum + A. tatarinowii（14.19% and 9.67%,respectively）. Therefore, both the growth status of plants and the relative abundance of root bacteria are responsible for nitrogen and phosphorus removal from wastewater. Furthermore, growth and absorption by plants are the main ways to remove nutrients during sewage treatment.
Keywords：
simulated constructed wetland; nitrogen and phosphorus removal; high-throughput sequencing; root microbial community;
- DOI：
10.19675/j.cnki.1006-687x.2020.11033
- Series：
(A) Mathematics/ Physics/ Mechanics/ Astronomy; (B) Chemistry/ Metallurgy/ Environment/ Mine Industry
- Subject：
Environment Science and Resources Utilization
- Classification Code：
X703;X173
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