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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">RUDN Journal of Ecology and Life Safety</journal-id><journal-title-group><journal-title xml:lang="en">RUDN Journal of Ecology and Life Safety</journal-title><trans-title-group xml:lang="ru"><trans-title>Вестник Российского университета дружбы народов. Серия: Экология и безопасность жизнедеятельности</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2313-2310</issn><issn publication-format="electronic">2408-8919</issn><publisher><publisher-name xml:lang="en">Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">37587</article-id><article-id pub-id-type="doi">10.22363/2313-2310-2023-31-4-544-555</article-id><article-id pub-id-type="edn">RVSPPG</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Biological resources</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Биологические ресурсы</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Influence of phytoplankton on the water quality of surface water sources and drinking water</article-title><trans-title-group xml:lang="ru"><trans-title>Влияние фитопланктона на качество воды поверхностных водных источников и питьевой воды</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6965-4895</contrib-id><contrib-id contrib-id-type="spin">9259-4503</contrib-id><name-alternatives><name xml:lang="en"><surname>Kalinina</surname><given-names>Elena V.</given-names></name><name xml:lang="ru"><surname>Калинина</surname><given-names>Елена Васильевна</given-names></name></name-alternatives><bio xml:lang="en"><p>Candidate of Technical Sciences, Аssociate Рrofessor, Department Environmental protection</p></bio><bio xml:lang="ru"><p>кандидат технических наук, доцент, кафедра охраны окружающей среды</p></bio><email>Kalininaelena1@rambler.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3292-8359</contrib-id><contrib-id contrib-id-type="spin">1705-6430</contrib-id><name-alternatives><name xml:lang="en"><surname>Rudakova</surname><given-names>Larisa V.</given-names></name><name xml:lang="ru"><surname>Рудакова</surname><given-names>Лариса Васильевна</given-names></name></name-alternatives><bio xml:lang="en"><p>Doctor of Technical Sciences, Рrofessor, Head of Department Environmental protection</p></bio><bio xml:lang="ru"><p>доктор технических наук, профессор, заведующая кафедрой охраны окружающей среды</p></bio><email>larisa.rudakova.007@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Research Center of Ministry of Defence of the Russian Federation</institution></aff><aff><institution xml:lang="ru">Пермский национальный исследовательский политехнический университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2023-12-15" publication-format="electronic"><day>15</day><month>12</month><year>2023</year></pub-date><volume>31</volume><issue>4</issue><issue-title xml:lang="en">VOL 31, NO4 (2023)</issue-title><issue-title xml:lang="ru">ТОМ 31, №4 (2023)</issue-title><fpage>544</fpage><lpage>555</lpage><history><date date-type="received" iso-8601-date="2024-01-24"><day>24</day><month>01</month><year>2024</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, Kalinina E.V., Rudakova L.V.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, Калинина Е.В., Рудакова Л.В.</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">Kalinina E.V., Rudakova L.V.</copyright-holder><copyright-holder xml:lang="ru">Калинина Е.В., Рудакова Л.В.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by-nc/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/ecology/article/view/37587">https://journals.rudn.ru/ecology/article/view/37587</self-uri><abstract xml:lang="en"><p style="text-align: justify;">The problem of the appearance of odors in drinking water associated with the development of algae and cyanobacteria in reservoirs of drinking water sources is considered. The results of the analysis of information on the main types of organisms that are sources of odorants in drinking water, chemicals produced by them and a description of odors are presented. Most often, the causes of odors in drinking water are the massive development of Aphanizomenon flos-aquae and Oscillatoria agardhii , which are producers of geosmin and 2-methylisoborneol. The classification of hazard levels for water pollution by cyanobacteria and recommended measures, including the frequency of monitoring and sampling, are given. The measures implemented with a decrease in the number of cyanobacteria in reservoirs of drinking water supply sources by physical, chemical and biological methods are presented. Methods of removal of intracellular and extracellular cyanotoxins from drinking water are described. The analysis of the efficiency of removal of various substances with odorizing effect from drinking water is presented.</p></abstract><trans-abstract xml:lang="ru"><p style="text-align: justify;">Рассмотрена проблема появления запахов в питьевой воде, связанная с развитием водорослей и цианобактерий в водоемах - источниках питьевой воды. Представлены результаты анализа информации об основных видах организмов, являющихся источниками одорантов в питьевой воде, продуцируемых ими химических веществ и описание запахов. Чаще всего причинами появления запахов в питьевой воде является массовое развитие Aphanizomenon flos-aquae и Oscillatoria agardhii , являющихся продуцентами геосмина и 2-метилизоборнеола. Приведены классификация уровней опасности по загрязнению воды цианобактериями и рекомендуемые при этом мероприятия, в том числе частота мониторинга и отбора проб. Представлены мероприятия, реализуемые при снижении численности цианобактерий в водоемах - источниках питьевого водоснабжения физическими, химическими и биологическими методами. Описаны методы удаления внутриклеточных и внеклеточных цианотоксинов из питьевой воды. Приводится анализ эффективности удаления различных веществ, обладающих одорирующим эффектом из питьевой воды.</p></trans-abstract><kwd-group xml:lang="en"><kwd>drinking water</kwd><kwd>odorants</kwd><kwd>geosmin</kwd><kwd>2-methylisoborneol phytoplankton</kwd><kwd>cyanobacteria</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>питьевая вода</kwd><kwd>одоранты</kwd><kwd>геосмин</kwd><kwd>2-метилизоборнеол фитопланктон</kwd><kwd>цианобактерии</kwd></kwd-group><funding-group><funding-statement xml:lang="en">The research was carried out within the framework of the scientific project No. FSNM-2020-0024 “Development of scientific foundations of environmentally friendly and nature-like technologies and rational use of natural resources in the field of extraction and processing of hydrocarbon raw materials” commissioned by the Ministry of Science and Higher Education of the Russian Federation.</funding-statement><funding-statement xml:lang="ru">Исследование выполнено в рамках научного проекта № FSNM-2020-0024 «Разработка научных основ экологически чистых и природоподобных технологий и рационального природопользования в области добычи&#13;
и переработки углеводородного сырья» по заказу Министерства науки и высшего&#13;
образования Российской Федерации.</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Ponomarev DS. Intellectual system of decision-making support for the control of the technological process of natural surface water deodorisation at the city treatment facilities (Dissertation). Izhevsk; 2019. 162 р. (In Russ.)</mixed-citation><mixed-citation xml:lang="ru">Пономарев Д.С. Интеллектуальная система поддержки принятия решений для управления технологическим процессом дезодорации природных поверхностных вод на городских очистных сооружениях: дис. … канд. техн. наук. Ижевск, 2019. 162 с.</mixed-citation></citation-alternatives></ref><ref id="B2"><label>2.</label><citation-alternatives><mixed-citation xml:lang="en">Butakova EA. Features of odorising substances (geosmin and 2-methylisoborneol) as secondary metabolites of cyanobacteria. Plant Physiology. 2013;60(4):537-540. 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