红假单胞菌去除养鱼废水三态氮及COD的研究

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Abstract

In this paper,we investigated the removal of inorganic nitrogen in carp farming waste water by Rhodopseudomonas sp. wps.The NO₂^--N removal ratio decreased with the decrease of concentration of strain wps.The removal ratio was unaffected at about 5×10⁴ cell/mL of strain wps,but it was increased apparently when carbon source was added simultaneously(at a final concentration of 10 ppm),with 20.06% higher than control.The NH₄⁺-N removal was improved by addition of strain wps,but it was removed more significantly by the carbon source addition.The addition of 5×10⁴ cell/mL wps and 10 ppm carbon made the removal ratios of NO₂-N and COD increased by 20.51% and 22.03% than the control,respectively.Light had little effect on the waste water. PCR-DGGE analysis showed that strain wps had a competitive disadvantage over indigenous photosynthetic bacteria.

Key words： Rhodopseudomonas carp farming waste water ammonia-nitrogen nitrite-nitrogen DGGE

Received: 25 August 2012

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	ZHANG Hui
	ZHANG De-min
	WANG Yi-nong
	DAI Hai-ping

Cite this article:

ZHANG Hui,ZHANG De-min,WANG Yi-nong, et al. Removal of inorganic nitrogen and COD from carp farming waste water by Rhodopseudomonas[J]. , 2012, 31(4): 435-440.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2012/V31/I4/435

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