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    • 6. 发明授权
    • Treatment process for removing microbial contaminants suspended in
wastewater
    • 去除污水中悬浮微生物污染物的处理工艺
    • US6110374A
    • 2000-08-29
    • US107960
    • 1998-06-30
    • Paul A. Hughes
    • Paul A. Hughes
    • B01D39/08B01D39/16C02F1/44C02F1/52
    • C02F1/5236B01D39/16B01D2239/0613B01D2239/065B01D2239/0654B01D2239/0659B01D2239/1233C02F1/44C02F2303/04
    • A treatment process is disclosed for reducing the concentration of pathogenic microorganisms in a volume of wastewater that contains a substantial concentration of pathogenic microorganisms less than about 10 microns in size, less than about 5 microns in size, and less than about 0.1 microns in size. The process includes adding an agglomerate-promoting agent, such as a coagulant chemical, to the volume of wastewater such that the solids aggregates form in the volume of wastewater and include the pathogenic microorganisms. The volume of wastewater is then passed through a filter cloth membrane to separate greater than about 50.0% of the pathogenic microorganisms less than 10 microns in size from the volume of wastewater, to separate up to about 99.9% of the pathogenic microorganisms less than about 5 microns in size, and to separate up to about 99% of the pathogenic microorganisms less than about 0.1 microns in size. The filter cloth membrane used is constructed of random web needled polyester felt characterized by a free passage size through the filter cloth membrane of greater than about 5 microns. More specifically, the treatment process can separate greater than about 50.0% and up to about 99.9% of protozoan pathogens such as Cryptosporidium and Giardia from the volume of wastewater.
    • 公开了一种处理方法,用于降低一定体积的废水中的致病微生物的浓度,其含有大小约小于约10微米,尺寸小于约5微米,尺寸小于约0.1微米的致病微生物的相当浓度。 该方法包括将附聚物促进剂如凝结剂化学品添加到废水体积中,使得固体聚集体形成废水体积并且包括病原微生物。 然后将废水的体积通过滤布膜以将大于约50.0%的大小从污水体积小于10微米的病原微生物分离出来,将高达约99.9%的病原微生物分离到小于约5 并且分离至多约99%的尺寸小于约0.1微米的病原微生物。 所使用的滤布膜由无规网针刺聚酯毡构成,其特征在于大于约5微米的通过滤布膜的自由通过尺寸。 更具体地,处理过程可以从废水体积中分离大于约50.0%和高达约99.9%的原生动物病原体,例如隐孢子虫和贾第鞭毛虫。