不同化学需氧量/硫酸盐（COD/硫酸盐）和食物/微生物比（F/M比）条件下富硫酸盐鞣革后废水的厌氧消化。
Anaerobic digestion of sulphate-rich post-tanning wastewater at different COD/sulphate and F/M ratios.
作者信息
Mahesh M, Arivizhivendhan K V, Nivetha K, Swarnalatha S, Sekaran G
机构信息
Environmental Science and Engineering, CSIR-Central Leather Research Institute (CLRI), Adyar, Chennai, Tamil Nadu 600 020 India.
出版信息
3 Biotech. 2018 Feb;8(2):130. doi: 10.1007/s13205-018-1154-x. Epub 2018 Feb 13.
Anaerobic digestion of post-tanning wastewater was performed in batch anaerobic digester to evaluate the effect of COD/sulphate ratio [0.62, 0.69, and 1.20 (w/w) %] and F/M ratio [0.2, 0.3, 0.5, 0.7, 0.9, 1.1, 1.3, and 1.5 (w/w) %)] on the removal efficiency of COD. The F/M ratio of 0.3 was found to be the optimum ratio for the removal of COD by 53, 57, and 65%, respectively at COD/sulphate ratio of 0.62, 0.69, and 1.20. The maximum sulphate removal was observed at F/M ratio of 0.2 and the removal efficiency was 48, 50, and 58% at COD/sulphate ratio of 0.62, 0.69, and 1.20, respectively. The removal efficiency of COD and sulphate was increased with increase in COD/sulphate ratio from 0.62 to 1.20 and decreased with increase in F/M ratio from 0.2 to 1.5 in anaerobic digestion of post-tanning wastewater. The maximum concentration of sulphide formation was 784 mg/L at COD/sulphate ratio of 0.62 in anaerobic digestion process and the process was inhibited at this sulphide concentration. The microbial activity in the sludge was evaluated through live and dead cell assay using fluorescent microscopy. The maximum amount of dead microbes was observed in the anaerobic digester, which was operated at COD/sulphate ratio of 0.62 than other studied ratio.
在间歇式厌氧消化池中对制革后废水进行厌氧消化，以评估化学需氧量（COD）/硫酸盐比率[0.62、0.69和1.20（w/w）%]和进料/微生物量（F/M）比率[0.2、0.3、0.5、0.7、0.9、1.1、1.3和1.5（w/w）%]对COD去除效率的影响。结果发现，F/M比率为0.3是去除COD的最佳比率，在COD/硫酸盐比率为0.62、0.69和1.20时，COD去除率分别为53%、57%和65%。在F/M比率为0.2时观察到最大的硫酸盐去除量，在COD/硫酸盐比率为0.62、0.69和1.20时，去除效率分别为48%、50%和58%。在制革后废水的厌氧消化中，COD和硫酸盐的去除效率随着COD/硫酸盐比率从0.62增加到1.20而提高，随着F/M比率从0.2增加到1.5而降低。在厌氧消化过程中，当COD/硫酸盐比率为0.62时，硫化物形成的最大浓度为784mg/L，并且该过程在这个硫化物浓度下受到抑制。通过使用荧光显微镜的活细胞和死细胞测定法评估污泥中的微生物活性。在厌氧消化池中观察到死亡微生物的最大数量，该厌氧消化池在COD/硫酸盐比率为0.62下运行，高于其他研究比率。
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