洗衣废水和生活污水中试规模厌氧处理：硫化物产生方面的微生物群落恢复力。
Laundry wastewater and domestic sewage pilot-scale anaerobic treatment: Microbial community resilience regarding sulfide production.
机构信息
Laboratory of Biological Processes, Department of Hydraulics and Sanitation, Engineering School of São Carlos, University of São Paulo (EESC - USP) Campus II, São Carlos, SP, Brazil.
Microbial Resources Division, Research Centre for Chemistry, Biology and Agriculture (CPQBA), Campinas University, UNICAMP, Campinas, SP, Brazil.
出版信息
J Environ Manage. 2019 Dec 1;251:109495. doi: 10.1016/j.jenvman.2019.109495. Epub 2019 Sep 17.
In this study, the removal of anionic surfactant Linear Alkylbenzene Sulfonate (LAS) from laundry wastewater was evaluated in co-digestion with domestic sewage, using a pilot-scale Expanded Granular Sludge Bed reactor. Surfactant influent concentration was enhanced from 5 ± 3 mg LAS L (stage I) to 19 ± 10 mg LAS L (stage II) and 36 ± 19 mg LAS L (stage III) throughout reactor operation. Sulfide levels higher than 20 mg L influenced LAS removal efficiency, which decreased from 71% to 55% and 32% in stage I, II and III, respectively. Acclimation of microbial population was verified and higher relative abundance of the genera similar to Cytophaga, Bacteroides, Syntrophus and Syntrophobacter in the early stages (adaptation and stage I) was replaced by higher relative abundance of the genera Anaerophaga, Nitrosovibrio, Sulfurovum and Desulfovibrio in the last stages (stage II and III).
在这项研究中，使用中试规模的膨胀颗粒污泥床反应器，评估了在与生活污水共消化时，从洗衣废水中去除阴离子表面活性剂直链烷基苯磺酸盐 (LAS) 的效果。在整个反应器运行过程中，将表面活性剂的进水浓度从 5±3mg LAS/L（阶段 I）提高到 19±10mg LAS/L（阶段 II）和 36±19mg LAS/L（阶段 III）。硫化物水平高于 20mg/L 会影响 LAS 的去除效率，分别使阶段 I、II 和 III 的 LAS 去除效率从 71%降低至 55%和 32%。微生物种群的驯化得到了验证，在早期（适应期和阶段 I）丰度较高的类似 Cytophaga、Bacteroides、Syntrophus 和 Syntrophobacter 属被后期（阶段 II 和 III）丰度较高的 Anaerophaga、Nitrosovibrio、Sulfurovum 和 Desulfovibrio 属取代。
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