Effect of nitrite from nitritation on biological phosphorus removal in a sequencing batch reactor treating domestic wastewater
Effect of nitrite from nitritation on biological phosphorus removal in a sequencing batch reactor treating domestic wastewater
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亚硝化产生的亚硝酸盐对序批式反应器处理生活污水生物除磷的影响
DOI：
10.1016/j.biortech.2011.03.091
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发表时间：
2011-06-01
影响因子：
11.4
通讯作者：
Peng, Yongzhen
中科院分区：
文献类型：
--
作者：
Zeng, Wei;Yang, Yingying;Peng, Yongzhen
虽然亚硝酸盐对强化生物除磷（EBPR）的影响已有研究，但关于硝化引起的亚硝酸盐积累对EBPR的影响的研究非常有限。研究了序批反应处理生活污水中硝化亚硝酸盐对EBPR的影响。结果表明，低于10 mg/L的亚硝酸盐对磷的吸收和释放没有抑制作用；而当亚硝酸盐积累量达到20 mg/L时，EBPR出现恶化。20 mg/L的亚硝酸盐对好氧磷素吸收无影响，因为磷的吸收先于硝化作用。导致EBPR恶化的主要原因是碳源竞争。通过批量试验研究了亚硝酸盐对厌氧磷释放的影响。在碳源充足的情况下，30 mg/L的亚硝酸盐对聚-羟基烷酸酯（PHA）的储存没有影响；相反，在碳源不足的情况下，反硝化菌与聚磷菌争夺碳源，导致PHA合成和p释放减少。(C) 2011 Elsevier Ltd.版权所有。
Although nitrite effect on enhanced biological phosphorus removal (EBPR) has been previously studied, very limited research has been undertaken about the effect of nitrite accumulation caused by nitritation on EBPR. This paper focused on nitrite effect from nitritation on EBPR in a sequencing batch react or treating domestic wastewater. Results showed that nitrite of below 10 mg/L did not inhibit P-uptake and release; whereas EBPR deterioration was observed when nitrite accumulation reached 20 mg/L. Due to P-uptake prior to nitritation, nitrite of 20 mg/L has no effect on aerobic P-uptake. The main reason leading to EBPR deterioration was the competition of carbon source. Batch tests were conducted to investigate nitrite effect on anaerobic P-release. Under sufficient carbon source, nitrite of 30 mg/L had no impact on poly-beta-hydroxyalkanoate (PHA) storage; contrarily, under insufficient carbon source, denitrifiers competing for carbon source with phosphorus accumulating organisms resulted in decrease of PHA synthesis and P-release. (C) 2011 Elsevier Ltd. All rights reserved.