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    楼超楠, 韩昫身, 金艳, 何焱, 宋兴福. 不同碳源对微生物反硝化性能的影响[J]. 华东理工大学学报(自然科学版), 2023, 49(5): 660-669. DOI: 10.14135/j.cnki.1006-3080.20220524001
    引用本文: 楼超楠, 韩昫身, 金艳, 何焱, 宋兴福. 不同碳源对微生物反硝化性能的影响[J]. 华东理工大学学报(自然科学版), 2023, 49(5): 660-669. DOI: 10.14135/j.cnki.1006-3080.20220524001
    LOU Chaonan, HAN Xushen, JIN Yan, HE Yan, SONG Xingfu. Effect of Different Carbon Sources on Microbial Denitrification Performance[J]. Journal of East China University of Science and Technology, 2023, 49(5): 660-669. DOI: 10.14135/j.cnki.1006-3080.20220524001
    Citation: LOU Chaonan, HAN Xushen, JIN Yan, HE Yan, SONG Xingfu. Effect of Different Carbon Sources on Microbial Denitrification Performance[J]. Journal of East China University of Science and Technology, 2023, 49(5): 660-669. DOI: 10.14135/j.cnki.1006-3080.20220524001

    不同碳源对微生物反硝化性能的影响

    Effect of Different Carbon Sources on Microbial Denitrification Performance

    • 摘要: 采用序批式反应器,研究了甲醇、乙酸钠、乙二醇、丙三醇和葡萄糖这5种碳源对不同电子受体反硝化性能的影响。结果表明,以NO3-N为电子受体时,甲醇、乙酸钠、乙二醇、丙三醇、葡萄糖的最佳碳氮比(溶液中化学需氧量(COD)和总氮(TN)质量浓度之比)分别为5.0、5.0、7.0、7.0、8.0,比反硝化速率从快到慢依次是乙酸钠、甲醇、乙二醇、丙三醇、葡萄糖;以NO2-N为电子受体时,甲醇、乙酸钠、乙二醇、丙三醇、葡萄糖的最佳碳氮比分别为3.0、3.0、3.5、4.0、4.0,比反硝化速率从快到慢依次是甲醇、乙酸钠、乙二醇、葡萄糖、丙三醇。经成本计算可得,当处理相同质量浓度的NO3-N和NO2-N时,分别需要投加的碳源成本从低到高依次为甲醇、葡萄糖、乙酸钠、乙二醇、丙三醇和甲醇、葡萄糖、乙二醇、乙酸钠、丙三醇。

       

      Abstract: Five carbon sources, including methanol, sodium acetate, glycol, glycerol, and glucose were used to investigate the denitrification performance of different electron acceptors in sequencing batch reactors (SBRs). The results demonstrated that the removal ratios and specific denitrification rates of different carbon sources all showed upward trends with the increasing of carbon nitrogen ratios (The ratio of chemical oxygen demand (COD) to total nitrogen (TN) mass concentration). The optimal carbon nitrogen ratios of five carbon resources for NO3-N and NO2-N were 5.0, 5.0, 7.0, 7.0, 8.0 and 3.0, 3.0, 3.5, 4.0, 4.0, respectively. Under the optimal carbon nitrogen ratio, the specific denitrification rates decreased with the sequence of sodium acetate, methanol, glycol, glycerol and glucose for NO3-N electron acceptor, and methanol, sodium acetate, glycol, glucose and glycerol for NO2-N electron acceptor. After calculation, the cost for treating the same concentrations of NO3-N increased with the sequence of methanol, glucose, sodium acetate, glycol, and glycerol, while that of NO2-N increased with the sequence of methanol, glucose, glycol, sodium acetate, and glycerol. Compared to NO3-N, NO2-N saved 40%—50% carbon sources cost at the same concentration. Glucose was recommended as the external carbon source with low ammonia nitrogen loading rates, and sodium acetate was recommended with high ammonia nitrogen loading rates, while glycol could be served as the substitute for sodium acetate.

       

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