Safe drinking water for rural communities using a low-cost household system. Effects of water matrix and field testing
نویسندگان
چکیده
The relationship between turbidity (T) and ultraviolet C (UVC) disinfection is still not clearly understood, as well no attention has been paid to the contribution of natural organic matter (NOM). present work assessed influence particulate NOM on UVC efficiency in terms E. coli MS2 removal at bench collimated beam (CB) flow-UVC systems, both laboratory field (Colombia). reactor was installed part a household water treatment (HWT) system consisting filtration + disinfection. Tests were performed according WHO standards using fine test dust, humic acid (HA), microbiological indicators. CB results showed significant decrease inactivation rate presence small concentrations HA (3.5 mg/L), with killing dose increasing 65%, vs. non-significant effects range 0–20 NTU. Following same trend, tests decreased solely HA. At concentration flow rate, an increase 17.6 NTU negligible effect. Conversely, HA, UVT254 dropped from 88.7% (0 mg/L HA) 73.3%, reducing by 1–2 log-units. Finally, HWT could be classified protective working rates ?5 L/min. However, 3.5 (UVT254 < 75%), it presented limited protection for viruses.
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ژورنال
عنوان ژورنال: Journal of water process engineering
سال: 2021
ISSN: ['2214-7144']
DOI: https://doi.org/10.1016/j.jwpe.2021.102400