| 碳源类型、温度及电子受体对生物除磷的影响 |
| 摘要点击 1965 全文点击 1004 投稿时间：2014-06-10 修订日期：2014-09-05 |
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| 中文关键词 生物除磷 释磷 吸磷 碳源 温度 电子受体 |
| 英文关键词 biological phosphorus removal phosphorus release phosphorus uptake carbon source temperature electron acceptor |
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| 中文摘要 |
| 以中试氧化沟系统活性污泥为研究对象,开展了碳源类型、温度、电子受体和COD浓度对释磷、吸磷过程的影响研究. 结果表明:25℃ 时,以生活污水、乙酸钠和葡萄糖为不同碳源,葡萄糖的释磷、吸磷速率最小,分别为5.12 mg·(g·h)-1和6.43 mg·(g·h)-1,生活污水和乙酸钠的释磷、吸磷速率数值相近. 在12、16、20和25℃ 时,以乙酸钠为碳源,释磷、吸磷速率随温度的升高有不同程度的增加; 且好氧吸磷速率随外加COD浓度的增大而减小. 当以氧、硝酸盐和亚硝酸盐为电子受体时,吸磷速率的大小排序为:氧>硝酸盐>亚硝酸盐; 缺氧吸磷过程的硝酸盐和亚硝酸盐的消耗量与吸磷量之间的化学计量关系(P吸收/N消耗,质量比)分别为0.96和0.65. |
| 英文摘要 |
| Effects of carbon sources, temperature and electron acceptors on phosphorus uptake and release were investigated in a pilot-scale oxidation ditch. Phosphorus uptake and release rates were measured with different carbon sources (domestic sewage, sodium acetate, glucose) at 25℃. The results showed that the minimum phosphorus uptake and release rates of glucose were 5.12 mg·(g·h)-1 and 6.43 mg·(g·h)-1, respectively, and those of domestic sewage are similar to those of sodium acetate. Phosphorus uptake and release rates increased with the increase of temperature (12, 16, 20 and 25℃) using sodium acetate as carbon sources. Anoxic phosphorus uptake rate decreased with added COD. Electron acceptors (oxygen, nitrate, nitrite) had significant effects on phosphorus uptake rate and their order was in accordance with oxygen>nitrate>nitrite. The mass ratio of anoxic P uptake and N consumption (Puptake/Nconsumption) of nitrate and nitrite were 0.96 and 0.65, respectively. |
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