[1] Song Hailiang,. Mechanism of microcystin removalfrom eutrophicated source water by aquatic vegetable bed [J]. Journal of Southeast University (English Edition), 2006, 22 (4): 528-533. [doi:10.3969/j.issn.1003-7985.2006.04.018]

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Mechanism of microcystin removalfrom eutrophicated source water by aquatic vegetable bed()

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Journal of Southeast University (English Edition)[ISSN:1003-7985/CN:32-1325/N]

Volumn:

22

Issue:

2006 4

Page:

528-533

Research Field:

Environmental Science and Engineering

Publishing date:

2006-12-30

Info

Title:

Mechanism of microcystin removalfrom eutrophicated source water by aquatic vegetable bed

Author(s):

Song Hailiang

School of Energy and Environment, Southeast University, Nanjing 210096, China

Keywords:

microcystin;  aquatic vegetable bed;  biodegradation;  protozoa;  metazoa;  accumulation of plant

PACS:

X172

DOI:

10.3969/j.issn.1003-7985.2006.04.018

Abstract:

For purifying raw water for tap water treatment, the aquatic vegetable bed(AVB)experiment has been carried out in a hypertrophic waterfront of Taihu Lake, China.The average removal rates of total microcystin-RR and microcystin-LR are 63.0% and 66.7%, respectively.Experiments indicate that Ipomoea aquatica can absorb microcystin by using enzyme-linked immunosorbent assay(ELISA), and the roots absorb more toxins than leaves and stems.Fluorescence in situ hybridization(FISH)is used to analyze the density of microcystin degrading bacteria in the AVB sediment.Two species of microcystin degrading bacteria are detected, which indicate that microcystin bio-degradation process happened in the AVB.Protozoa and metazoa are abundant in root spheres.Aspidisca sp., Vorticella sp., Philodina sp., and Lecane sp.are dominant species.The predation functions of protozoa and metazoa have a positive effect on the removal of cyanobacteria and microcystin.

References:

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Memo

Memo:

Biography: Song Hailiang(1979—), male, doctor, lecturer, songhailiang @seu.edu.cn.

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