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首页> 外文会议>International Water Association(IWA) Conference; 20050518-20; Xi'an(CN) >Anaerobic uptake of phosphate in an anaerobic-aerobic granular sludge SBR
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Anaerobic uptake of phosphate in an anaerobic-aerobic granular sludge SBR

机译：厌氧-好氧颗粒污泥SBR中厌氧吸收磷酸盐

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An unusual phenomenon of anaerobic phosphate uptake under alternating anaerobic/aerobic condition was observed in a granular sludge sequencing batch reactor, fed with acetate as sole organic substrate. Anaerobic phosphate uptake efficiencies remained 50-70% as the influent P/COD was increased from 2/100 to 4/100, and results showed that anaerobic uptake of phosphate was correlated with anaerobic absorption of acetate. Excluding the main possibility of chemical phosphate removal, it appeared that phosphate uptake during anaerobic phase was associated with organisms enriched in the reactor. Moreover, results indicated that intracellular glycogen was used as the main energy source of organics anaerobic absorption and intracellular polymers storage. Measuring and analyzing the variation of phosphate, organic substrate, intracellular glycogen and pH in the anaerobic phase, a preliminary explanation was developed that anaerobic uptake of phosphate was the demand of intracellular glycogen degradation, and extracellular phosphate was transported to intracellular by pH gradient-sensitive phosphate carrier protein.
机译：在粒状污泥测序分批反应器中观察到在交替的厌氧/好氧条件下厌氧磷酸盐吸收的异常现象，以乙酸作为唯一的有机底物进料。当进水P / COD从2/100增加到4/100时，厌氧磷的吸收效率保持50-70％，结果表明，厌氧吸收磷与乙酸的厌氧吸收有关。排除化学除磷的主要可能性，似乎厌氧阶段的磷吸收与反应器中富集的生物有关。此外，结果表明细胞内糖原被用作有机物厌氧吸收和细胞内聚合物存储的主要能源。通过测量和分析厌氧相中磷酸盐，有机底物，细胞内糖原和pH的变化，初步解释了厌氧吸收磷酸盐是细胞内糖原降解的需求，并且pH梯度敏感型将细胞外磷酸转移到细胞内磷酸盐载体蛋白。

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