太湖流域典型河流含氮物消减速率研究

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Abstract The reduction rates of nitrogen pollution in typical rivers of Taihu Basin were studied using a self - developed in-situ device. The reduction rates of total nitrogen and ammonia nitrogen were (280.6±180.0)~(1458.8± 725.7)mg/(m³·d) and (35.2±3.7)~(343.6±88.4)mg/(m³·d), respectively, which indicated significant spatial difference (P<0.05). The reduction rate of nitrate nitrogen had no significant difference (P>0.05) among the rivers, and the rate was (44.3±7.6)~(521.2±19.2) mg/(m³·d). The N reduction rates under the microbial and non-microbial actions were 95.0~733.1mg/(m³·d) and 180.0~996.7mg/(m³·d), accounting for 12.9%~50.2% and 49.8%~87.0% of the total N reduction rate and 2.0%~13.4% and 7.4%~25.7% of the total N load to the rivers, respectively, indicating that the contribution of microbial actions to the reduction of nitrogen pollutants was low in short-term after nitrogen into the rivers. The N reduction rates were positively correlated with the TN, NO₃^- and SS concentrations (P<0.05), which suggested TN, NO₃^- and SS might be the influencing factors for N reducing.

Key words： river water nitrogen pollutant reduction rate

Received: 05 February 2016

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	Articles by authors
	GUO Jia-xun
	PENG Jun-xiang
	ZHANG Hai-tao
	HU Wei-ping
	ZHAO Geng-mao
	LAI Xi-jun
	DENG Jian-cai

Cite this article:

GUO Jia-xun,PENG Jun-xiang,ZHANG Hai-tao等. Study on reduction rates of nitrogen pollution in typical rivers of Taihu Basin[J]. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(10): 3026-3032.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2016/V36/I10/3026

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