Substrate inhibition and pH effect on denitritation with granular biomass

IF 0.9 Q4 CHEMISTRY, MULTIDISCIPLINARY
Stanislava Kecskésová, Zuzana Imreová, Bibiána Kožárová, J. Derco, M. Drtil
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引用次数: 0

Abstract

Abstract Undissociated HNO2 (up to 2 mg dm−3) was confirmed as substrate inhibitor for granular biomass from a denitritation upflow sludge bed reactor used for biological removal of nitrite. On the contrary, total nitrite nitrogen (N-NO2 up to 500 mg dm−3) and methanol (COD up to 2000 mg dm−3) were not proven to be inhibitors. pH also affected the denitritation efficiency (optimal pH was 5.9). Reduction of HNO2 concentration in the reactor by effluent recycling is recommended.
基质抑制和pH对颗粒状生物质反硝化的影响
摘要无缔合HNO2(高达2 mg dm−3)被证实是反硝化上流污泥床反应器中颗粒生物质的底物抑制剂,该反应器用于生物去除亚硝酸盐。相反,总亚硝酸盐氮(N-NO2高达500 mg dm−3)和甲醇(COD高达2000 mg dm−2)未被证明是抑制剂。pH值也影响反硝化效率(最佳pH值为5.9)。建议通过废水再循环降低反应器中HNO2的浓度。
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来源期刊
Acta Chimica Slovaca
Acta Chimica Slovaca CHEMISTRY, MULTIDISCIPLINARY-
自引率
12.50%
发文量
11
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