State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
J Hazard Mater. 2010 Jul 15;179(1-3):1147-51. doi: 10.1016/j.jhazmat.2010.02.065. Epub 2010 Mar 1.
The denitrifying sulfide removal (DSR) process with bio-granules comprising both heterotrophic and autotrophic denitrifiers can simultaneously convert nitrate, sulfide and acetate into di-nitrogen gas, elementary sulfur and carbon dioxide, respectively, at high loading rates. This study determines the reaction rate of sulfide oxidized into sulfur, as well as the reduction of nitrate to nitrite, would be enhanced under a micro-aerobic condition. The presence of limited oxygen mitigated the inhibition effects of sulfide on denitrifier activities, and enhanced the performance of DSR granules. The advantages and disadvantages of applying the micro-aerobic condition to the DSR process are discussed.
具备异养和自养反硝化菌的生物颗粒的反硝化脱硫（DSR）工艺可以在高负荷率下分别将硝酸盐、硫化物和乙酸盐转化为氮气、单质硫和二氧化碳。本研究确定了在微需氧条件下，硫化物氧化为硫的反应速率以及硝酸盐还原为亚硝酸盐的反应速率会加快。有限氧的存在减轻了硫化物对反硝化菌活性的抑制作用，并提高了 DSR 颗粒的性能。讨论了将微需氧条件应用于 DSR 工艺的优缺点。
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