| 缺氧/好氧SBR工艺去除亚铵法造纸废水中的氮 |
| 摘要点击 1394 全文点击 1222 投稿时间：2000-11-20 |
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| 中文关键词 缺氧/好氧 SBR 造纸废水 氨氮 外加碳源 硝化 反硝化 |
| 英文关键词 anoxic/aerobic SBR paper mill wastewater NH3--N external carbon sources nitrification denitrification |
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| 中文摘要 |
| 采用反应期缺氧/好氧SBR工艺去除亚铵法造纸废水中氮的研究结果表明:该工艺脱氮的最佳操作条件为:缺氧、好氧时间比1:1.5,运行周期为8h;SRT≥12d,NH3-N负荷率＜0.063g/(g·d);当进水中CODcr浓度为1200～1800mg/L,NH3-N浓度为135～200mg/L,NOx-N浓度为7～10mg/L时,没有外加碳源时,氨氮的去除率为95%,总氮的去除率为66%,投加乙酸钠后,总氮的去除率提高到85%;投加乙酸钠的量为125mg/L(以CODCr计)最经济、有效. |
| 英文摘要 |
| The experiment results showed that the best technology of removing the nitrogen was anoxic time to aerobic time of 1∶1 5,a cycle of 8 hours; the SRT should be more than 12d and the loading of NH3-N should be less than 0 063g/(g·d) ; when the concentration of CODCr、NH3-N and NOx-N was 1200～1800mg/L,135～200mg/L and 7～10mg/L respectively,without external carbon sources,the removal rate of NH3-N and TN could respectively achieve 95% and 66%;after adding sodium acetate the removal rate of TN could get to 85%. The addition of sodium acetate at the concentration equivalent to theoretical CODCr values of 125mg/L appeared to be the most economical and reliable option. |
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