| 亚硝酸盐对聚磷菌吸磷效果的影响 |
| 摘要点击 1957 全文点击 1072 投稿时间：2005-02-21 修订日期：2005-04-04 |
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| 中文关键词 城市生活污水 厌氧/好氧 亚硝酸盐 硝酸盐 电子受体 反硝化除磷 |
| 英文关键词 domestic sewage anaerobic-aerobic process nitrite nitrate electron acceptors denitrifying phosphorus removal |
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| 中文摘要 |
| 以厌氧/好氧生化反应器中的聚磷菌为实验对象,探讨了亚硝酸盐对聚磷菌吸磷效果的影响.结果表明:低浓度NO2--N可以作为聚磷菌的电子受体,实现NO2--N型反硝化除磷,但吸磷总量和吸磷速率明显低于NO3--N型反硝化除磷的效果;当NO2--N和NO3--N共存于缺氧环境时,NO2--N对NO3--N型反硝化除磷的除磷总量和速率没有影响,但会降低NO3--N的消耗量;NO2--N型反硝化除磷污泥的好氧吸磷量和速率均低于传统A/O厌氧放磷污泥的效果,但由于它经历了缺氧吸磷和好氧吸磷2个阶段,因此,从吸磷总量或出水水质看,二者相差不大. |
| 英文摘要 |
| Intermediate products of biological nitrogen removal process,nitrate and nitrite,could be used as electron acceptors for phosphorus removal.This study investigated the effects of nitrite on phosphorus uptake in anaerobic/oxic(A/O) biological phosphorus removal process.The results indicated that in addition to oxygen and nitrate(DPBNa,Denitrifying Phosphorus removal Bacteria with nitrate as electron acceptor),to some extent,nitrite can also serve as electron acceptor to achieve the nitrite denitrifying phosphorus removal(DPBNi).The quantity and rate of phosphorus uptake of DPBNi,however,were evidently lower than that of DPBNa.The nitrite existed in anoxic reactor made no difference to the quantity and rate of denitrifying phosphorus removal.But it would reduce the consumption of nitrate.Moreover,the data showed that the aerobic phosphate uptake of DPBNi was lower than that of anaerobic phosphorus-released sludge in traditional A/O process.However,there was no much difference between these two kinds of sludge in terms of the total phosphorus uptake quantity and the effluent quality. |
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