Removal of organics and viruses using hybrid ceramic MF system without draining PAC
Removal of organics and viruses using hybrid ceramic MF system without draining PAC
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DOI：
10.1016/j.desal.2005.12.054
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发表时间：
2007-01-05
期刊：
影响因子：
9.9
通讯作者：
Yu, M. J.
中科院分区：
文献类型：
--
作者：
Oh, H. K.;Takizawa, S.;Yu, M. J.
采用陶瓷微滤联合粉末活性炭吸附（PAC-MF）技术对含污水的河流水进行了有机和微生物控制试验。PAC-MF在一个反应器内紧凑地配置了PAC吸附区和MF过滤区。开始时PAC添加量为20 g/L，无PAC漏液。有机物在吸附区被大量去除，然后在过滤区得到额外的去除。疏水有机化合物在PAC上的选择性吸附，UV260去除率为90.3 +/- 3.2%，DOC去除率为80.2 +/- 8.6%。PAC-MF的有效有机控制将氯耗量显著降低至0.5 +/- 0.08 mg/L以下，从而使渗透液中THMFP降至8.8 +/- 2.2 mu g/L以下。此外，添加PAC对微生物的吸附或吸引潜力以及PAC饼层中的病毒捕获也有助于陶瓷MF在运行60天后将病毒去除至低于检测限。因此，混合PAC-MF是一种有前景的高级水处理工艺，能够通过吸附和过滤机制同时去除有机和微生物。
Ceramic microfiltration combined with Powdered activated carbon adsorption (PAC-MF) was tested for organic and microbial control using river water laden with sewerage effluents. The PAC-MF was compactly configured with PAC adsorption and MF filtration zones in one reactor. It was operated with PAC addition of 20 g/L at the beginning without PAC drain. Organic matter was largely removed in the adsorption zone and then additional removal was obtained in the filtration zone. Selective adsorption of hydrophobic organic compounds onto PAC resulted in greater UV260 removal of 90.3 +/- 3.2% than DOC removal of 80.2 +/- 8.6%. Efficient organic control of the PAC-MF considerably decreased chlorine consumption to less than 0.5 +/- 0.08 mg/L, and thus THMFP was brought down to less than 8.8 +/- 2.2 mu g/L in permeate. Furthermore, adsorption or attraction potential of microorganisms by PAC addition as well as virus capture in the PAC cake layer also assisted ceramic MF to remove viruses to less than detection limit after 60 days of operation. Therefore, the hybrid PAC-MF is a prospective advanced water treatment process that is capable of simultaneous organic and microbial removal by adsorption and filtration mechanisms.