Effectiveness of Using Gases for Water Purification with the Same Microbial Load

Authors

Abstract

The different efficiency for the water purification process depending on the gas nature is shown. The NM value change of the time of bubbling gases is presented. The degree of destruction of the studied microorganisms was calculated depending on the mode of water treatment and the process duration. The oxygen influence on the process of MO destruction consists of two stages - a slight accumulation of cells (I stage) and their subsequent destruction in the II stage. The percentage of cell accumulation during 3600s during oxygen bubbling into the aqueous medium was 9.43%, which is due to the consumption of bubbling oxygen by bacteria. This led to the lowest process efficiency for the oxygen action in the end of the result (Dd is 34.73% only). The greatest efficiency of MO destruction was found during carbon dioxide bubbling (Dd = 91.0%), which is obviously due to the increase in the acidity of the test medium (pHinitial = 6.1 and pHend = 4.3). The influence of helium on water purification at different microbial load has been studied. It has been shown that the efficiency of cell destruction increases with a decrease of its number per unit volume of water.

Author Biography

I. Z. Koval, Lviv Polytechnic National University, 12, S. Bandery, Str., Lviv, 79013, Ukraine

Ph. D. (Technical), Associate Professor of the Department of Physical, Analytical and General Chemistry

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Published

2022-02-24

Issue

No. 25 (2021): Visnyk of V. N. Karazin Kharkiv National University series «Еcоlogy»

Section

BIOLOGICAL RESEARCH

License

Copyright (c) 2021 Коваль І. З.

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