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以批量处理系统的pH调控特征为对照,研究了不同pH水平(7.0、5.1、4.1)对高硫抗生素废水微好氧连续处理效果和污泥中细菌和酵母菌含量的影响.结果表明,随着曝气柱pH水平的降低,高硫抗生素废水连续处理系统3阶段的COD去除率分别为53%、42%、45%,BOD5去除率分别为79%、58%、50%,污泥脱氢酶活性(TF/MLSS.t)分别为47 088、10 506、14 390mg/(g.h).扫描电镜和荧光原位杂交-流式细胞术联用技术检测结果表明,曝气柱pH值变化并不影响连续小试3阶段污泥中细菌与酵母菌含量,并且细菌始终占据优势地位(含量均达到98%以上).pH水平对高硫抗生素废水批量处理系统和连续处理系统的处理效果存在同样的影响,pH水平并不能作为高硫抗生素废水连续处理系统中细菌和酵母菌含量的调控手段.
The effects of different pH levels (7.0, 5.1, 4.1) on the micro-aerobic continuous treatment of high-sulfur antibiotic wastewater and the contents of bacteria and yeasts in the sludge were investigated by using the pH control characteristics of batch treatment system. The results showed that With the decrease of the pH value of the aeration column, the removal rates of COD in the three stages of continuous treatment system for high-sulfur antibiotic wastewater were 53%, 42% and 45%, respectively, and the removal rates of BOD5 were 79%, 58% and 50% (TF / MLSS.t) were 47 088, 10 506 and 14 390 mg / (gh) respectively.The results of scanning electron microscopy and fluorescence in situ hybridization-flow cytometry showed that the pH value of the aeration column The bacterial and yeast contents in the sludge of the continuous small scale 3 stage sludge were not affected, and the bacteria always occupied the dominant position (the content reached more than 98%). The effect of pH on the batch and continuous treatment system of high sulfur antibiotic wastewater existed Similarly, the pH level does not act as a regulator of bacterial and yeast content in the system for the continuous treatment of high-sulfur antibiotic wastewater.