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平行运行一组小试炭柱,考察活性炭孔隙分布对炭柱运行效果和微生物特性的影响。结果表明:炭柱运行约100天后达到稳定,即成为生物活性炭(BAC);稳定后炭柱顶部生物量在4.5×10~7~4.0×10~8 CFU/g,生物活性在9.13~56.09mg O_2/(L·h·g)。增加炭颗粒表面的生物量和生物活性有助于提高炭柱对溶解性有机碳的去除效果。GAC表面的生物量和生物活性与活性炭D>10 000nm的孔容积相关,R2分别为0.721 3和0.597 9。为了提高BAC对有机物的去除效果,建议水厂使用该孔径范围内孔容积大的活性炭。活性炭孔径分布对炭颗粒表面微生物群落无选择性。
A series of small test charcoal columns were run in parallel to investigate the effect of pore size distribution on charcoal column operation and microbial characteristics. The results showed that the charcoal column reached a stable state after about 100 days of operation, that is, it became a bioactive carbon (BAC). The biomass at the top of the charcoal column after stabilization was 4.5 × 10-7 ~ 4.0 × 10-8 CFU / g and the biological activity was 9.13 ~ 56.09mg O 2 / (L · h · g). Increasing biomass and bioactivity on the surface of charcoal helps to improve the removal of dissolved organic carbon by the carbon column. The biomass and bioactivity on the GAC surface correlated with the pore volume of activated carbon D> 10 000 nm with R2 of 0.721 3 and 0.597 9, respectively. In order to improve the BAC removal of organic matter, it is recommended that the water plant use activated carbon with a large pore volume in the pore size range. Activated carbon pore size distribution of carbon particles on the surface of the non-selective microbial community.