不同剩余污泥发酵液对NOx-还原的影响

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Abstract This research adopted the (35±1)℃ temperature and pH were acidity (pH=4.0, 5.0, 6.0) and alkaline (pH=8.0, 9.0, 10.0) conditions to conduct waste activated sludge anaerobic fermentation, using an equal volume of different fermentation liquid as carbon source researched its effect on NO_x^- reduction process.The results showed that: when the fermentation liquid produced in pH=8.0 condition as carbon source, the highest reaction rate appeared, NO₃^- and NO₂^- reduction rate respectively were 16.28mg/(gVSS·h) and 17.51mg/(gVSS·h). The NO₂^- reduction process was faster than the NO₃^- reduction process while the fermentation liquid as carbon source produced by acidic condition, but the NO₃^- reduction rate was higher when the fermentation liquid as carbon source produced by alkaline condition. Meanwhile, which produced the nitrite accumulation phenomenon among the denitrification process, the accumulation rate of nitrite during denitrification process reached 82.5% when the fermentation liquid as carbon source produced in pH=10.0condition.

Key words： sludge fermentation liquid denitrification carbon source C/N

Received: 18 February 2016

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	Articles by authors
	HE Yue-lan
	WANG Shu-ying
	LI Xi-yao
	MA Bin
	GUO Si-yu

Cite this article:

HE Yue-lan,WANG Shu-ying,LI Xi-yao等. Effect of different waste activated sludge fermentation supernatants on NO_x^- reduction process[J]. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(10): 2964-2971.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2016/V36/I10/2964

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