好氧颗粒脱氮-溶解氧和碳氮比的影响

IF 0.6 Q4 CHEMISTRY, MULTIDISCIPLINARY

Kemija u Industriji-Journal of Chemists and Chemical Engineers Pub Date : 2023-01-16 DOI:10.15255/kui.2022.034

Mirjana Galant, Dijana Grgas, Tea Štefanac, M. Habuda-Stanić, T. Landeka Dragičević

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引用次数: 0

摘要

考察了除氮效率与溶解氧(DO)浓度(DO 1 ~ 7 mg l−1)、碳氮比(COD/N 1 ~ 14)、气流(0.4 ~ 2.9 l min−1)对粒径的影响。当COD/N≥11时，平均化学需氧量(COD)去除率≥90%，但当COD/N为14时，污水排放到地表水的N值基本满足要求。建议使用成熟颗粒有效去除N和COD的DO为2 mg l−1。颗粒的大小(直径)随着气流的增加而减小

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Nitrogen Removal with Aerobic Granules – Effect of Dissolved Oxygen and Carbon/Nitrogen Ratio

Nitrogen removal efficiency related to the dissolved oxygen (DO) concentration (DO 1–7 mg l −1 ), carbon/nitrogen ratio (COD/N 1–14), and the effect of airflow (0.4–2.9 l min −1 ) related to the granule size were investigated. The average chemical oxygen demand (COD) removal of ≥ 90 % was achieved at COD/N ≥ 11, but the satisfactory N values in effluent for discharge into the surface waters were almost achieved at COD/N 14. DO of 2 mg l −1 is recommended for efficient removal of N and COD with mature granules. The size (diameter) of the granules decreases with increased airflow

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来源期刊

Kemija u Industriji-Journal of Chemists and Chemical Engineers CHEMISTRY, MULTIDISCIPLINARY-

自引率

28.60%

发文量

审稿时长

24 weeks

期刊介绍： Kemija u industriji (Chemistry in industry) is monthly journal which is being published already for almost 60 years continually and from very beginning it is a journal of chemists and chemical engineers. It is official journal of Croatian Society of Chemists and Engineers and of Croatian Chemical Society. It is edited by Croatian Society of Chemists and Engineers.