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	Nitrification and denitrification in biological activated carbon filter for treating high ammonia source water
	Jianguang Liu ; Xiaojian Zhang ; Zhansheng Wang
	2010-10-12 ; 2010-10-12
关键词	Practical/ ammonia carbon purification water treatment/ biological activated carbon filter high ammonia source water treatment water purification process NH4+-N micropolluted source water dissolved oxygen aerobic zones anoxic zones organic matter nitrification organic matter degradation denitrification bacteria heterotrophic bacteria/ E0230 Environmental issues
中文摘要	Since the ammonia in the effluent of the traditional water purification process could not meet the supply demand, the advanced treatment of a high concentration of NH/sub 4//sup +/-N micro-polluted source water by biological activated carbon filter (BACF) was tested. The filter was operated in the downflow manner and the results showed that the removing rate of NH/sub 4//sup +/-N was related to the influent concentration of NH/sub 4//sup +/-N. Its removing rate could be higher than 95% when influent concentration was under 1.0 mg/L. It could also decrease with the increasing influent concentration when the NH/sub 4//sup +/-N concentration was in the range from 1.5 to 4.9 mg/L and the dissolved oxygen (DO) in the influent was under 10 mg/L, and the minimum removing rate could be 30%. The key factor of restricting nitrification in BACF was the influent DO. When the influent NH/sub 4//sup +/-N concentration was high, the DO in water was almost depleted entirely by the nitrifying and hetetrophic bacteria in the depth of 0.4 m filter and the filter layer was divided into aerobic and anoxic zones. The nitrification and degradation of organic matters existed in the aerobic zone, while the denitrification occurred in the anoxic zone. Due to the limited carbon source, the denitrification could not be carried out properly, which led to the accumulation of the denitrification intermediates such as NO/sub 2//sup -/. In addition to the denitrification bacteria, the nitrification and the heterotrophic bacteria existed in the anoxic zone.
语种	英语
出版者	Springer Verlag ; Germany
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/79710]
专题	清华大学
推荐引用方式 GB/T 7714	Jianguang Liu,Xiaojian Zhang,Zhansheng Wang. Nitrification and denitrification in biological activated carbon filter for treating high ammonia source water[J],2010, 2010.
APA	Jianguang Liu,Xiaojian Zhang,&Zhansheng Wang.(2010).Nitrification and denitrification in biological activated carbon filter for treating high ammonia source water..
MLA	Jianguang Liu,et al."Nitrification and denitrification in biological activated carbon filter for treating high ammonia source water".(2010).

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