首页> 外文期刊>Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies >A comparison of endogenous processes during anaerobic starvation in anaerobic end sludge and aerobic end sludge from an anaerobic/anoxic/oxic sequencing batch reactor performing denitrifying phosphorus removal
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A comparison of endogenous processes during anaerobic starvation in anaerobic end sludge and aerobic end sludge from an anaerobic/anoxic/oxic sequencing batch reactor performing denitrifying phosphorus removal

机译:厌氧/污泥/厌氧/氧化顺序分批反应器中进行脱氮除磷的厌氧污泥和好氧污泥中厌氧饥饿过程中内源过程的比较

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摘要

The endogenous processes in anaerobic end and aerobic end sludge responsible for biological denitrifying phosphorus removal were compared during a 7-d starvation under anaerobic conditions. The results showed that polyphosphate and glycogen were utilized simultaneously to generate maintenance energy for both the anaerobic and aerobic end sludge. During the 7-d starvation, the decay rate of denitrifying-phosphorus-accumulating-organisms (DPAOs) was higher for the aerobic end sludge than for the anaerobic end sludge. More energy was required for maintenance in the aerobic end sludge than for the anaerobic end sludge, with the greater amount of phosphorus release and glycogen degradation occurring in the aerobic end sludge. Moreover, different metabolic pathways for the endogenous processes were observed for the anaerobic and aerobic end sludge. After the 7-d starvation, the activity of DPAOs decreased more for the aerobic end sludge than that for the anaerobic end sludge.
机译:在厌氧条件下的7天饥饿期间,对负责生物反硝化除磷的厌氧端和好氧端污泥中的内源过程进行了比较。结果表明,多磷酸盐和糖原被同时利用以产生厌氧和好氧最终污泥的维持能量。在7天饥饿期间,好氧最终污泥的反硝化磷累积生物(DPAO)的衰减速率高于厌氧最终污泥。与好氧最终污泥相比,好氧最终污泥需要更多的能量来维持,而好氧最终污泥中磷的释放和糖原降解的量更大。此外,对于厌氧和好氧最终污泥,观察到内源过程的不同代谢途径。饥饿7天后,好氧最终污泥的DPAOs活性比厌氧最终污泥的DPAOs降低更多。

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