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Effect of Initial Azo Dye Concentration and Biomass Acclimation on Sludge Digestion and Dye Co-treatment

机译：初始偶氮染料浓度和生物量驯化对污泥消化和染料共处理的影响

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摘要

The effect of a reactive azo dye (the hydrolyzed form of Reactive Orange 107, HRO107) on the digestion of municipal waste sludge (WS) was studied. The study also focused on the effect of acclimation of the anaerobic mixed culture on dye treatment. Anaerobic batch assays were carried out in serum bottles under mesophilic conditions. Unac-climated and acclimated anaerobic mixed cultures were used for the study. Both unacclimated and acclimated anaerobic cultures completely reduced HRO107 during WS digestion. Inhibitory HRO107 concentration was found to be 800 mg/L for unacclimated mixed culture. Acclimation increased the inhibitory concentration level from 800 to 3200 mg/L. Sulfanilic acid and four other unidentified dye reduction end products were detected at the end of the assays. The results of this study indicated that anaerobic municipal WS digesters have the potential to be a cost efficient and effective pre treatment method.
机译：研究了活性偶氮染料（活性橙107，HRO107的水解形式）对城市垃圾污泥（WS）消化的影响。该研究还集中于厌氧混合培养物的驯化对染料处理的影响。在嗜温条件下在血清瓶中进行厌氧分批测定。未培养和适应的厌氧混合培养物用于研究。在WS消化过程中，未适应和适应的厌氧培养都完全降低了HRO107。对于未经适应的混合培养，发现抑制性HRO107浓度为800 mg / L。驯化使抑制浓度水平从800增加到3200 mg / L。在分析结束时检测到了磺胺酸和其他四种未确定的染料还原最终产物。这项研究的结果表明，厌氧市政WS消化器有可能成为一种经济高效的预处理方法。

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