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cje ›› 2012, Vol. 31 ›› Issue (07): 1876-1881.

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A composite bioremediation system for water purification.

YUAN Ya-guang1, ZHANG Chi1, XIE Wei-ping2, ZHAO Fu-geng1**, QIN Pei1   

  1. (1Halophyte Research Laboratory, Nanjing University, Nanjing 210093, China; 2Yixing Environmental Monitoring Station, Yixing 214206, Jiangsu, China)
  • Online:2012-07-10 Published:2012-07-10

Abstract: By the method of artificial simulation in laboratory, and with water spinach (Ipomoea aquatic), loach (Misgurus anguillicaudatus), and a kind of pseudomonad (Rhodopseudomonas palustris)as the engineering species, a composite bioremediation system of aquatic economic plant  aquatic animal  microorganism was constructed to improve the water quality of sewage. The biomass of I. aquatic and M. anguillicaudatus in the system and the water quality indices were investigated. Within the 23 days experimental period, the nutrient concentrations in the sewage decreased significantly, with the removal rates of NH4+-N, NO3--N, TP, and CODMn being 96.5%, 82.2%, 53.2%, and 24.5%, respectively. Meanwhile, the biomass of I. aquatic and M. guillicaudatus was averagely increased by 31.2% and 6.1%, respectively. All the results suggested that this composite bioremediation model had good economic and environmental benefits.

Key words: moving sand dune, species distribution pattern, interspecific correlation, allometric growth.