| 同步反硝化聚磷的试验研究 |
| 摘要点击 2196 全文点击 2077 投稿时间：2003-12-02 修订日期：2004-03-12 |
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| 中文关键词 反硝化聚磷 SBR反应器 聚磷菌 生物脱氮除磷 诱导 |
| 英文关键词 denitrifying phosphorus accumulation (DNPA) SBR phosphorus accumulating organism (PAO) enhanced biological nutrient removal (EBNR) induction |
| 作者 | 单位 | | 袁林江 | 西安建筑科技大学环境与市政工程学院,西安,710055 | | 张小玲 | 西安建筑科技大学环境与市政工程学院,西安,710055 | | 韩玮 | 西安建筑科技大学环境与市政工程学院,西安,710055 | | 王磊 | 西安建筑科技大学环境与市政工程学院,西安,710055 | | 杨永哲 | 西安建筑科技大学环境与市政工程学院,西安,710055 | | 王志盈 | 西安建筑科技大学环境与市政工程学院,西安,710055 |
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| 中文摘要 |
| 采用SBR反应器和人工合成废水研究了同步反硝化聚磷的条件和影响因素.试验结果表明,厌氧/好氧方式下驯养的生物除磷污泥,在厌氧期之后供给硝酸盐,则污泥可以很快实现同步反硝化聚磷.聚磷前厌氧阶段的存在是实现反硝化聚磷必不可少的重要前提.在没有NO3-干扰而且乙酸钠为唯一碳源下,最佳厌氧时间为60min.先于缺氧期微生物接触硝酸盐,会使反硝化聚磷减弱甚至丧失.缺氧段NO3--浓度是影响反硝化聚磷效果的因素之一.在厌氧(2h)-缺氧(1h)-好氧(2h)的试验条件下,当NO3--N浓度由5mg/L上升至20mg/L时,其反硝化聚磷效率由11.9%上升至48.7%.但NO3--N浓度提高到了20mg/L以上时,其效率提高得不很明显.好氧段的存在不会使诱导形成的反硝化聚磷消失,但缩短好氧时间有助于提高DNPA在除磷中的比例. |
| 英文摘要 |
| Denitrifying phosphorus accumulation (DNPA) and the factors affecting it were studied in a SBR with synthetic wastewater. The results showed that the sludge acclimatized under anaerobic/aerobic operation with good phosphorus removal ability, showed DNPA soon when fed nitrate instead of aeration following the anaerobic stage. Anaerobic stage was a vital premise to DNPA. If DNPA sludge was fed with nitrate prior to anaerobic stage, the DNPA would weaken even disappear. When acetate was used as sole carbon resource in the influent and nitrate did not exist in anaerobic,1 hour of anaerobic time was optimal . NO3-- concentration in the anoxic was one of the factors affecting DNPA. When nitrate concentration was advanced from 5mg/L to 20 mg/L, the percentage of DNPA increased from 11.9% to 48.7% under the condition of anaerobic(2h)-anoxic(1h)-aerobic(2h). But when the NO3-- concentration was enhanced upwards of 20mg/L, the efficiency cannot be improved. Induced DNPA did not disappear even though there was aerobic stage following anoxic stage, but the shorter the aerobic stage lasted the higher proportions of phosphorus removal via DNPA to total removal. |
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