沸石曝气生物滤池短程硝化特性及其机制

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Abstract The ammonia concentration and nitrogen loading rate of influent were varied to investigate the performance and mechanism of partial nitrification in the zeolite biological aerated filter (ZBAF) reactor. The microbial community structure of biofilm on the surface of zeolite was studied by high-throughput sequencing analysis technique. In the steady state, the nitrite production rate (NPR) was 0.760kg/(m³·d) and the nitrite accumulation rate was higher than 98.0%. The inhibition of free ammonia (FA) to the nitrite oxidizing bacteria (NOB) was proved to be the main reason of partial nitrification. Due to the adsorption of zeolite to ammonium, FA concentration could be remained at an appropriate range for inhibition of nitrite oxidizing bacteria (NOB). The production of nitrite in ZBAF followed the zero-order kinetics model. The enrichment of AOB and inhibition of NOB were realized in ZBAF, and the relative abundance of AOB (Nitrosomoadaceae) was more than 61% while no NOB was detected.

Key words： BAF partial nitrification free ammonia kinetic model zeolite

Received: 08 May 2017

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	YANG Yong-yuan
	WANG Xiao-jun
	ZHAO Shuang
	CHEN Zhen-guo

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YANG Yong-yuan,WANG Xiao-jun,ZHAO Shuang等. Partial nitrification performance and mechanism of zeolite biological aerated filter for ammonium wastewater treatment[J]. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(12): 4518-4525.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2017/V37/I12/4518

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