Microbial dehydrogenase activity can help to determine the oxidizing capacity of activated sludge. Here we propose an innovative and automated express-method based on rapid determination of dehydrogenase activity. The measurement is based on the rate of methylene blue reduction by living microbial cells in suspension. A single analysis takes 10 min. The method was adapted for biofilms immobilized on the floating carriers of industrial bioreactors and the kinetics of biological oxidation by activated sludge and biofilms was compared. New parameters were proposed to characterize the biological oxidation under low oxygen levels. The obtained make it possible to quickly determine the dehydrogenase activity of activated sludge and biofilms and promptly monitor the effectiveness of industrial biological wastewater treatment.
Аннотация В настоящее время на целлюлозно-бумажных предприятиях при регулировании водопользования необходимо учитывать ужесточение природоохранного законодательства Российской Федерации и переход нормирования на принцип Наилучших доступных технологий. Сложность планирования водопотребления и водоотведения на целлюлозно-бумажном предприятии, если оно обеспечивает прием на очистные сооружения СВ сторонних предприятий, состоит в том, что необходимо учитывать перспективы изменения водопользования и на этих предприятиях. Ключевые слова: целлюлозно-бумажная промышленность, очистные сооружения, сточные воды, биологическая очистка Abstract Nowadays when regulating water use at pulp and paper enterprises, it is necessary to consider the toughening of the environmental legislation of the Russian Federation and the transition of standardization to the principle of the Best Available Technologies. The complexity of planning water consumption and sanitation at a pulp and paper mill, if it ensures the acceptance of wastewater from third-party plants to wastewater treatment plants, is that it is necessary to consider the prospects for changes in water use at these enterprises.
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