| 有机碳源对启动及运行CANON颗粒污泥工艺的影响 |
| 摘要点击 2149 全文点击 650 投稿时间：2017-07-17 修订日期：2017-08-28 |
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| 中文关键词 SBR 有机碳源 全程自养脱氮 颗粒污泥 低氨氮 |
| 英文关键词 SBR organic carbon source CANON granular sludge low ammonia concentration |
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| 中文摘要 |
| 采用两组平行的SBR反应器R1和R2，通过分别添加有机碳源和不添加有机碳源对比实验，研究有机碳源对全程自养脱氮（CANON）颗粒污泥工艺启动的影响，通过改变有机碳源浓度对比实验，研究有机碳源对CANON工艺运行的影响.结果表明，50 mg ·L-1有机物的存在可以加快CANON颗粒污泥工艺的启动，R1和R2分别于23 d和32 d成功启动CANON颗粒污泥工艺.适量有机物（不超过150 mg ·L-1）的存在会通过增强亚硝化菌（AOB）及厌氧氨氧化菌（AnAOB）的活性和促进反硝化作用来提高氨氮及总氮去除率，R1和R2的最高氨氮和总氮去除率分别为92%、88%和89%、80%.进一步实验表明，过量的有机碳源（超过200 mg ·L-1）会抑制AOB及AnAOB的活性，从而降低氨氮及总氮去除率，但是会促进反硝化反应并提高其对系统脱氮的贡献率. |
| 英文摘要 |
| The effect of organic carbon on the start-up and operation of the CANON granular sludge process was investigated in two SBR reactors with different strategies:gradually increased organic carbon concentration (R1) and without organic carbon (R2). The results showed that adding 50 mg·L-1 organic carbon accelerated the start-up of the CANON granular sludge process. R1 and R2 were started up in 23 d and 32 d, respectively. Moreover, the appropriate organic carbon enhanced the activity of AOB, AnAOB, and denitrification, increasing the ammonia removal rates and total nitrogen (TN) removal rates. The maximum ammonia removal rates and total nitrogen removal rates of R1 were 92% and 88%, respectively. The maximum ammonia removal rates and total nitrogen removal rates of R2 were 89% and 80%, respectively. Further tests showed that excessive organic carbon concentration decreased the activity of AOB and AnAOB and reduced the removal efficiency of ammonia and total nitrogen. Adding organic carbon promoted denitrification activity and increased nitrogen removal efficiency. |
