升流式生物活性炭系统中生物量、活性及净水效果研究  

Research on Biomass, Activity and Performance of Up-Flow BAC Filtration System

作　　者：張智翔 廖晓斌[2] 张晓健[2] 陈超[2] 谢曙光[1] 

机构地区：[1]北京大学环境科学与工程学院,北京100871 [2]清华大学环境学院,北京100084

出　　处：《北京大学学报（自然科学版）》2013年第3期504-508,共5页Acta Scientiarum Naturalium Universitatis Pekinensis

基　　金：国家水体重大科技专项(2008ZX07420-005,2009ZX07423-003)资助

摘　　要：采用脂磷法、平板菌落计数法(HPC)和比耗氧摄取速率(SOUR)研究中试规模升流式生物活性炭(BAC)滤池中的生物量和生物活性的空间分布,同时结合出水水质评价BAC的净水效果。研究结果表明,BAC滤池可有效去除污染物,BAC滤池对CODMn,UV254和氨氮的平均去除率分别高达43.3%,45.7%和92.9%。大部分污染物在炭柱的前400 mm滤料层中被去除,这与生物量分布规律一致。生物量沿水流方向而减少,磷脂量从7.49 nmol/cm3降为4.86 nmol/cm3;菌落数由2.26×107CFU/cm3减少至1.12×107CFU/cm3;单位体积炭的SOUR在10 2mg/(cm3.h)的数量级,具有与生物量不同的变化规律。此外,BAC滤池出水具有生物安全性。The spatial distribution of microbial biomass and activity in pilot-scale two-stage up-flow BAC filters were studied using lipid-P,plate colony count（HPC） and specific oxygen uptake rate（SOUR）.Meanwhile,water qualities of the effluent were analyzed to evaluate the performance of BAC units.The results indicated that BAC filters could remove pollutants effectively,with the average removal efficiencies of 43.3 % for CODMn,45.7% for UV254,and 92.9 % for ammonia nitrogen,respectively.Furthermore,the removal of pollutants mainly occurred in of the top 400-mm GAC layer in the first-stage BAC filter.The content of lipid-P per unit volume media decreased from 7.49 to 4.86 nmol/cm^3 and colony counts decreased from 2.26×10^7to 1.12×10^7 CFU/cm^3,indicating that the amount of biomass decreased along flow path.The SOUR per unit volume media was around 10^-2mg /（cm^3·h） and had a different pattern of spatial distribution.In addition,the water quality of the effluent of up-flow BAC filters was biologically safe.

关 键 词：生物活性炭 生物量 生物活性 生物安全性 

分 类 号：TU991.2[建筑科学—市政工程]