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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">ekip</journal-id><journal-title-group><journal-title xml:lang="ru">Экология и промышленность России</journal-title><trans-title-group xml:lang="en"><trans-title>Ecology and Industry of Russia</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1816-0395</issn><issn pub-type="epub">2413-6042</issn><publisher><publisher-name>ООО "Калвис"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.18412/1816-0395-2024-4-27-33</article-id><article-id custom-type="elpub" pub-id-type="custom">ekip-2618</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>НАУЧНЫЕ РАЗРАБОТКИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SCIENTIFIC DEVELOPMENTS</subject></subj-group></article-categories><title-group><article-title>Влияние замораживания-оттаивания на свойства осадка очистных сооружений водопровода и перспективы его утилизации</article-title><trans-title-group xml:lang="en"><trans-title>The Influence of Freezing-thawing on the Properties of Sludge from Water Treatment Facilities and the Prospects for its Disposal</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Белканова</surname><given-names>М.Ю.</given-names></name><name name-style="western" xml:lang="en"><surname>Belkanova</surname><given-names>M.Yu.</given-names></name></name-alternatives><bio xml:lang="ru"><p>канд. хим. наук, доцент</p></bio><bio xml:lang="en"><p>Cand. Sci. (Chem.), Associate Professor</p></bio><email xlink:type="simple">podpiska@kalvis.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Авдин</surname><given-names>В.В.</given-names></name><name name-style="western" xml:lang="en"><surname>Avdin</surname><given-names>V.V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>д-р хим. наук, зав. кафедрой</p></bio><bio xml:lang="en"><p>Dr. Sci. (Chem), Head of Department</p></bio><email xlink:type="simple">podpiska@kalvis.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Галимов</surname><given-names>Д.М.</given-names></name><name name-style="western" xml:lang="en"><surname>Galimov</surname><given-names>D.M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>науч. сотрудник</p></bio><bio xml:lang="en"><p>Research Scientist</p></bio><email xlink:type="simple">podpiska@kalvis.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Южно-Уральский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>South Ural State University (National Research University)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>16</day><month>04</month><year>2024</year></pub-date><volume>28</volume><issue>4</issue><fpage>27</fpage><lpage>33</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; ООО "Калвис", 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">ООО "Калвис"</copyright-holder><copyright-holder xml:lang="en">ООО "Калвис"</copyright-holder><license xlink:href="https://www.ecology-kalvis.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://www.ecology-kalvis.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://www.ecology-kalvis.ru/jour/article/view/2618">https://www.ecology-kalvis.ru/jour/article/view/2618</self-uri><abstract><p>Показано, что метод замораживания-оттаивания позволяет резко увеличить водоотдающую способность осадков очистных сооружений (ОСВ) и приводит к увеличению медианного размера частиц дисперсной фазы осадка. Изучены типы связанной воды в ОСВ методами термогравиметрии (ТГ), дифференциальной термогравиметрии (ДТГ), дифференциальной сканирующей калориметрии (ДСК) и масс-спектрометрии газообразных продуктов термолиза (МС). Установлено, что выделение воды и углекислого газа полностью завершается при температуре 600 °С. Определена удельная поверхность твердой фазы осадков ОСВ до и после замораживания-оттаивания. Проанализировано распределение пор по размерам.</p></abstract><trans-abstract xml:lang="en"><p>It has been shown that the freezing-thawing method allows a sharp increase in the water-yielding capacity of water treatment sludge (WTS sludge) and leads to an increase in the median particle size of the dispersed phase of sludge. The distribution of bound water types in WTP sludge was studied using thermogravimetry (TG), differential thermal thermogravimetry (DTG), differential scanning calorimetry (DSC) and mass spectrometry of gaseous thermolysis products (MS). It has been established that the release of water and carbon dioxide is completely completed at a temperature of 600°C. The specific surface area of the solid phase of WTP sludge before and after freezing-thawing was determined. The pore size distribution was studied. The BET isotherm of WTP sludge corresponds to mesoporous sorbents.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>осадки очистных сооружений водопровода</kwd><kwd>замораживание – оттаивание</kwd><kwd>удельное сопротивление фильтрации</kwd><kwd>термический анализ</kwd><kwd>масс-спектрометрия термолизных газов</kwd><kwd>низкотемпературная адсорбция азота</kwd></kwd-group><kwd-group xml:lang="en"><kwd>water treatment plants sludge</kwd><kwd>freezing-thawing</kwd><kwd>specific resistance to filtration</kwd><kwd>thermal analysis</kwd><kwd>mass spectrometry of thermolysis gases</kwd><kwd>low-temperature nitogen adsorption</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Babatunde A.O., Zhao Y.Q. Constructive approaches toward water treatment works sludge management. An international review of beneficial reuses. Crit. Rev. Environ. Sci. Technol. 2007. Vol. 37 (2). 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