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Research on phosphorus accumulating organisms metabolism characteristics by different ratios of propionic to acetic acid

机译：用丙酸不同比例的不同比例的磷累积生物体代谢特征的研究

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The effect of different ratios of propionic to acetic acid on the efficiency of enhanced biological phosphorus removal (EBPR) was investigated. Five anaerobic -aerobic sequencing batch reactors（1#-5#）were operated with Synthetic wastewater of acetic acid, different propionate/acetate C-mol ratios of 0.5, 2, 10 and propionic acid to cultivate and enrich phosphorus accumulating organisms (PAOs). It was found that as a sole carbon source, Sodium acetate induced the largest anaerobic phosphorus release rate, so as to the largest aerobic phosphorus uptake rate. With the increase of propionic/acetic acid ratio， the soluble orthophosphate (SOP) release and uptake decreased, the same as PHB synthesize and glycogen degradation; However, the SOP removal efficiency increased by 7%. Apparently, higher ratio of propionic/acetic acid led to superior EBPR. There exist a positive correlation between anaerobic phosphorus release and poly-β-hydroxybutyrate (PHB) synthesis to a certain extent in the five SBR reactors.
机译：研究了丙酸与乙酸不同比例对增强生物磷去除（EBPR）的效率的影响。用乙酸的合成废水，0.5,2,10和丙酸的合成废水，用合成废水处理五个厌氧 - 血管测序批量反应器（1＃-5＃），以培养和富含磷积聚生物（PAOS） 。发现作为唯一的碳源，醋酸钠诱导最大的厌氧磷释放速率，从而最大的有氧磷吸收率。随着丙酸/乙酸比的增加，可溶性正磷酸盐（SOP）释放和吸收降低，与PHB合成和糖原降解相同;但是，SOP去除效率增加了7％。显然，丙酸/乙酸的比例较高，导致高级EBPR。在五种SBR反应器中，厌氧磷释放与聚-β-羟基丁酸（PHB）合成的正相关性存在正相关性。

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