介质粒径、形状和生物膜对粪肠球菌在饱和活性炭柱中迁移的影响

通过室内柱实验,研究了介质粒径、介质形状和生物膜对粪肠球菌在饱和活性炭柱内的迁移的影响。结果表明:介质粒径、形状和和生物膜对粪肠球菌在饱和活性炭介质中的沉积与迁移有着重要影响。活性炭介质粒径越小,粪肠球菌在活性炭滤柱中的沉积量越多,流失率越小,在介质粒径为0.8 mm时,出现表面封阻现象;颗粒活性炭比同粒径的柱状活性炭更利于粪肠球菌的沉积;颗粒活性炭表面附着生物膜时,有利于提高粪肠球菌在饱和活性炭内的沉积量,减小其流失率。

Effect of Particle Size,Shape and Biofilm on Migration of Enterococcus faecalis in Saturated Activated Carbon Column

The effects of medium particle size,medium shape and biofilm on the migration of Enterococcus faecalis in a saturated activated carbon column were investigated by laboratory experiments.The results show that the particle size,shape and biofilm have an important influence on the deposition and migration of Enterococcus faecalis in saturated activated carbon medium.The smaller the particle size of the activated carbon medium,the more the deposition of Enterococcus faecalis in the activated carbon filter column,the smaller the loss rate;when the particle size is 0.8 mm,the surface blocking phenomenon occurs;granular activated carbon is more conducive to the deposition of Enterococcus faecalis than columnar activated carbon of the same particle size;when the biofilm is attached to the surface of granular activated carbon,it is beneficial to increase the deposition amount of Enterococcus faecalis in saturated activated carbon and reduce its loss rate.