Open AccessNanofiltration to Purify Drinking Water from Cyanobacteria and Microcystins in Water Supply Systems
Author(s) -
А. В. Селезнева,
V. N. Seleznev,
Sayriddin Sh. Sayriddinov
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1079/2/022043
Subject(s) - environmental science , microcystin , nanofiltration , water quality , cyanobacteria , environmental chemistry , water treatment , ultrafiltration (renal) , water supply , population , surface water , environmental engineering , chemistry , biology , ecology , membrane , chromatography , environmental health , medicine , biochemistry , genetics , bacteria
The pollution of a surface water supply source (Kuibyshev reservoir) with cyanobacterial metabolites under the conditions of the increased biogenic load has been estimated. During the period of mass growth of Cyanobacteria, the reservoir water quality deteriorates in some indicators, including the smell, taste, and content of organic and toxic substances. Among the wide range of cyanotoxins, microcystin-LR, the permissible concentration of which in drinking water should not exceed 1 μg/dm 3 , poses the greatest threat to the population. Global warming creates favorable conditions for the rapid growth of Cyanobacteria, therefore, the issue of providing the population with high-quality drinking water will further become aggravated. Conventional process lines at municipal water treatment plants are ineffective in removing intracellular and extracellular cyanotoxins. The best and safest barrier against the ingress of cyanotoxins into drinking water can be membrane technologies that allow ultrafiltration of bacterial cells without mechanical damage and nanofiltration of cyanotoxins dissolved in water.