Purification of drinking water from arsenic (V) compounds by sorption household water treatment devices type of «jug»

Purification of drinking water from arsenic (V) compounds by sorption household water treatment devices type of «jug»

Авторы: Еремеева Наталия Валерьевна ЧИТАТЬ PDF
ЧИТАТЬ
Kalachev S.L. Purification of drinking water from arsenic (V) compounds by sorption household water treatment devices type of «jug» / S.L.Kalachev, A.F.Plakhotnik, N.V.Eremeeva // Journal of Hygienic Engineering and Design. – 2019. – Т. 26. – С. 3-10.

The article reflects the problem of contamination of drinking water with arsenic (V) compounds. The purpose of the study is to develop a method for reducing the arsenic concentration in drinking water using sorption household water purification devices (HWPD) such as a “jug”. We have compiled 6 compositions of filter-sorbing mixtures, which differ in sorbents and its specific weight: granular activated carbon, cation exchange resin, selective anion exchange resin, hybrid iron-containing sorbent. The mixtures were placed in standard replaceable cartridges for HWPD type of “jug”; through these mixtures were passed 150 - 300 L of standard liquid solution, simulating tap water contaminated with arsenic compounds (0.05 mg/L ± 20%), chloroform (0.4 mg/L ± 20%), lead (0.06 mg/L ± 20%). All concentrations of pollutants were determined before and after water purification (arsenic and lead - by atomic absorption spectrometry, chloroform - by gas chromatography). It has been proven by our experiment that the using of mixtures reduces effectively the concentration of arsenic (from 0.05 mg/L to 0.0008-0.013 mg/L). The most effective mixtures were established: of granular activates carbon (GAC) - 45%, hybrid sorbent (HS) - 20%, selective anion exchange resin (SAER) - 35%, and mixture of GAC - 30%, Canion exchange resin (CER) - 20%, HS - 16%, and SAER - 34%. This second mentioned mixture was determined as most universal and rational, along with arsenic removing: heavy metal ions, active chlorine, and volatile organohalogen compounds. The effective resource of the cartridge is 150 L. Cartridges with this mentioned mixture are recommended for mass production and it is proposed to purify water from arsenic compounds, “typical” pollutants, and characteristic of water from centralized sources of drinking water supply.

Ключевые слова: Household water filter, Drinking water, Arsenic purification.
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