High-rate thiosulfate-driven denitrification at pH lower than 5 in fluidized-bed reactor

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• 作者：Francesco Di Capua^a ; ^b ; ^{f.dicapua@unicas.it} ; Aino-Maija Lakaniemi^b ; Jaakko A. Puhakka^b ; Piet N.L. Lens^b ; ^c ; Giovanni Esposito^a
• 关键词：Acidic wastewater treatment ; Autotrophic denitrification ; Chemolithotrophic denitrifiers ; Fluidized-bed reactor ; Mixotrophic biofilm ; Thiosulfate
• 刊名：Chemical Engineering Journal
• 出版年：2017
• 出版时间：15 February 2017
• 年：2017
• 卷：310
• 期：part_P1
• 页码：282-291
• 全文大小：1504 K
• 卷排序：310

文摘

Thiosulfate-driven denitrification was investigated in a FBR at pH 4.45–6.90. Denitrification efficiency > 99% was achieved at a pH as low as 5.30. 100% denitrification was sustained even at a pH of 4.75 by continuous CO2 purging. A mixotrophic biofilm dominated by T. denitrificans developed at acidic pH. pH and alkalinity governed FBR performance and microbial dynamics.