改性纳米铁/炭填充PRB去除地下水硝态氮研究

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Abstract In this study rhamnolipid was selected to modify Nano Iron, attaching to activated carbon to constitute SM-nano iron/carbon, and took it as PRB filling material. The organic glass column was used to simulate the continuous wall PRB to study on removal of nitrate nitrogen in the water. Experimental results showed that the modifying Nano Iron could effectively load on the activated carbon, and its suspension stability were greatly improved; the particle size of SM-nano iron/carbon was much larger than Nano iron, it can effectively alleviate the PRB pore spacing blocking; When nano iron and activated carbon quality ratio was 5:2, the running effect of PRB was the best; Lower pH, initial nitrate nitrogen concentration and the velocity of water were favorable of removal of nitrate nitrogen in water.

Key words： SM-nano iron/carbon PRB nitrate nitrogen groundwater

Received: 06 February 2016

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	Articles by authors
	GAO Yang-yang
	LIU Guo
	CHEN Chun-mei
	XU Xiong-kun
	CHEN Zheng-yang

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GAO Yang-yang,LIU Guo,CHEN Chun-mei等. SM-nano iron/carbon filling in PRB for nitrate nitrogen removal in groundwater[J]. CHINA ENVIRONMENTAL SCIENCECE, 2016, 36(10): 3019-3025.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2016/V36/I10/3019

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