摘要
利用中试装置对饮用水生物活性炭(BAC)深度处理的挂膜过程进行了研究,讨论了挂膜过程中污染物去除效果的变化。结果表明,生物活性炭的挂膜前中期亚硝酸盐积累严重,出水DO的波动较大;挂膜后期,BAC的出水亚硝酸盐氮降低到无法检出,炭柱对DO的削减较为稳定。炭柱对CODMn、UV254、TOC和BDOC的去除效率随着挂膜时间的推进趋于稳定,挂膜后期分别达到66.9%、87.6%、64.9%和65.5%。建议采用活性炭滤柱对氨氮的去除率保持稳定及出水较低的亚硝酸盐氮作为判断生物活性炭成熟的水质参考依据。
A pilot-scale equipment was used to study the process of biofilm colonization of biological activated carbon process in drinking water treatment,the changes of the pollutants removal efficiencies during biofilm colonizing was discussed. The results showed that,in the early and middle stage,the effluent nitrite of BAC column was in high level and then decreased to 0 mg·L-1 in anaphase; and the reduced value of DO tended to be stable. The removal rate CODMn,UV254,TOC and BDOC by BAC column become to be stable during the biofilm colonizing,the average removal rate of them were 66.9%,87.6%,64.9% and 65.5% respectively. It is suggested that the removing efficiencies of ammonia and nitrite could be used as indirect index to represent the maturation of biofilm.
出处
《水处理技术》
CAS
CSCD
北大核心
2010年第11期66-69,77,共5页
Technology of Water Treatment
基金
国家水专项课题资助(2008ZX07421-004
2008ZX07421-002)
关键词
生物活性炭(BAC)
挂膜
污染物去除
biological activated carbon（BAC）
biofilm colonization
removal of contaminant
