Abstract：
Microbial communities in hybrid linear flow channel reactors and anaerobic sequencing batch reactors operated in series for remediation and beneficiation of tannery wastewater were assessed. Despite concurrent sulfidogenesis, more intensive pre-treatment in hybrid linear flow channel reactors reduced methanogenic inhibition usually associated with anaerobic digestion of tannery effluent and promoted efficiency (max 321 mLCH4/gCODconsumed, 59% biogas CH4). Nitrification and biological sulfate reduction were key metabolic pathways involved in overall and sulfate reducing bacterial community selection, respectively, during pre-treatment. Taxonomic selection could be explained by the proteinaceous and saline character of tannery effluent, with dominant genera being protein and/or amino acid degrading, halotolerant and/or ammonia tolerant. Complete oxidizers dominated the sulfidogenic populations during pre-treatment, while aceticlastic genera dominated the methanogenic populations during anaerobic digestion. With more intensive pre-treatment, the system shows promise for remediation and recovery of biogas and sulfur from tannery wastewater in support of a bio-circular economy.
摘要：
评估了串联运行的混合线性流动通道反应器和厌氧序批式反应器中的微生物群落，以修复和选矿制革废水。尽管同时发生了硫化物生成，在混合线性流动通道反应器中进行更密集的预处理减少了产甲烷抑制，通常与制革废水的厌氧消化和提高的效率相关(最大消耗321mLCH4/gCOD，59%的沼气CH4)。硝化和生物硫酸盐还原是涉及整体和硫酸盐还原细菌群落选择的关键代谢途径，分别,在预处理期间。分类学选择可以用制革废水的蛋白质和盐水特性来解释，优势属是蛋白质和/或氨基酸降解，耐盐和/或耐氨。在预处理过程中，完全氧化剂主导了硫化种群，在厌氧消化过程中，产甲烷种群占主导地位。随着更密集的预处理，该系统有望修复和回收制革废水中的沼气和硫，以支持生物循环经济。
