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首页> 外文期刊>Journal of water reuse and desalination >Performance and mechanism of anaerobic biotrickling filter for removal of sulfite, sulfate, and hydrosulfite
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Performance and mechanism of anaerobic biotrickling filter for removal of sulfite, sulfate, and hydrosulfite

机译：厌氧生物滴滤池去除亚硫酸盐，硫酸盐和连二亚硫酸盐的性能及机理

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摘要

A biotrickling filter (BTF) was designed for removal of sulfite (SO32-), sulfate (SO42-), and hydrosulfite (HSO3-) produced from flue gas adsorbent during dual-alkali flue gas desulfurization. With an SO32- concentration of 0.89 g-S/(L packing), BTF could completely remove SO32- within 3h with an elimination capacity (EC) of 296 g-S/(m(3) h). With an SO4(2-) concentration of 0.60 g-S/(L packing), the removal efficiency (RE) of SO42- reached 90.3% at 5.25 h and 95% at 24 h. With an HSO3- concentration of 0.74 g-S/(L packing), HSO3- could not be detected in the trickling liquid at 2 h with an EC of 370 g-S/(m-h). The difference in desulfurization performance of the BTF was minor when sodium lactate and sodium acetate were used as carbon sources. Acetate was more superior when taking both the carbon/sulfur ratio (C/S) and RE into account. The total dissolved sulfide yield was over 70% with sodium acetate as the carbon source, which was 15-20% higher than that with sodium lactate. Sodium lactate was not completely degraded and acetic acid was produced. All oxidation-reduction potential values were lower than -370 mV, indicating a perfect anaerobic condition in the BTF. The BTF could efficiently treat sulfite, sulfate, and hydrosulfite and could replace the regeneration stage of the dual-alkali process.
机译：设计了一种生物滴滤器（BTF），用于去除在双碱式烟气脱硫过程中由烟气吸附剂产生的亚硫酸盐（SO32-），硫酸盐（SO42-）和亚硫酸氢盐（HSO3-）。当SO32-浓度为0.89 g-S /（L包装）时，BTF可以在3小时内完全去除SO32-，消除容量（EC）为296 g-S /（m（3）h）。当SO4（2-）浓度为0.60 g-S /（L包装）时，SO42-的去除效率（RE）在5.25 h时达到90.3％，在24 h时达到95％。在HSO3-浓度为0.74 g-S /（L填充）的情况下，在2小时内，在EC为370 g-S /（m-h）的滴流液中无法检测到HSO3-。当使用乳酸钠和乙酸钠作为碳源时，BTF的脱硫性能差异很小。当同时考虑碳/硫比（C / S）和RE时，乙酸盐更为优越。以乙酸钠为碳源的总溶解硫化物产率超过70％，比乳酸钠高15-20％。乳酸钠未完全降解，产生了乙酸。所有氧化还原电位值均低于-370 mV，表明BTF中存在完美的厌氧条件。 BTF可以有效地处理亚硫酸盐，硫酸盐和亚硫酸氢盐，并可以替代双碱法的再生阶段。

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