朱华清, 吕锡武. 刚毛藻表流湿地裸藻水华的形成与消退[J]. 环境化学, 2018, 37(12): 2638-2644
ZHU Huaqing, LYU Xiwu. Formation and regression of euglena bloom in surface-flow constructed wetlands(SFCW) dominated by Cladophora[J]. Environmental Chemistry, 2018, 37(12): 2638-2644

朱华清1,2,3, 吕锡武1,3
1. 东南大学能源与环境学院, 南京, 210096;
2. 景德镇陶瓷大学材料科学与工程学院, 景德镇, 333403;
3. 无锡太湖水环境研究中心, 无锡, 214135
关键词:    刚毛藻表流湿地    裸藻水华    太阳虫    变形虫   
Formation and regression of euglena bloom in surface-flow constructed wetlands(SFCW) dominated by Cladophora
ZHU Huaqing1,2,3, LYU Xiwu1,3
1. School of Energy and Environment of Southeast University, Nanjing, 210096, China;
2. School of Material Science and engineering of Jingdezhen Ceramic Insitute, Jingdezhen, 333403, China;
3. ERC of Taihu Lake, Wuxi, 214135, China
Nutrients in rural diffused wastewater can be concentrated by SFCW dominated by Cladophora (SFCW-CLA), and recycled as fish feed. However, SFCW-CLA was often deteriorated by Euglena bloom under improper manipulation. To investigate the relationship between ambient factors (temperature and solar irradiance), nutrient consuption rate (NCR) and growth rates (GR) of Cladophora and Euglena Sanguinea (E.S), Field commissions of SFCW-CLA with inoculation of dominant Cladophora and autogenetic Cladophora were carried out respectively in 2014 and 2015. Miniature cultivation of E.S films in climatic cabinet was conducted to reveal regressing mechanisms of E.S bloom in SFCW-CLA. Results indicated that GR of Cladophora related to NCR of TN, TP and TIC with coefficients and rejection probabilities as (R=0.66,P=0.11), (R=0.74,P=0.06) and (R=0.83,P=0.02) respectively. NCR of TN (R=-0.89,P=0.01), TP (R=-0.86,P=0.01) and TIC (R=-0.91,P=0.00) negatively correlated with GR of E.S, while NCR of TOC (R=0.60,P=0.16) correlated with individual density of E.S. GR of Cladophora significantly correlated with temperature while uncorrelated with solar irradiance. Temperature and solar irradiance uncorrelated with GR of E.S, but effectively influenced bloom duration and metamorphosis of E.S. Furthermore, microscopic tests provided direct evidence of predation of heliozooid and amoebae on the regression of E.S bloom.
Key words:    SFCW-CLA    E.S Bloom    heliozooid    amoebae   
收稿日期: 2018-05-07
基金项目: 国家"十三五"科技重大专项(2017ZX07202004)资助.
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