【作者】 蒋胜韬；

【导师】 万金保；

【作者基本信息】 南昌大学 ， 环境工程， 2006， 硕士

【摘要】 本课题立足于国内外同步硝化反硝化最新研究成果，在考察活性污泥系统和膜生物反应器(MBR)系统中的同步硝化反硝化现象的基础上，重点对膜生物反应器(MBR)系统中的同步硝化反硝化进行了实验研究和理论分析，得出如下主要结论： (1) 实验在活性污泥系统中和膜生物反应系统中都证明了同步硝化反硝化的存在。并同时发现：在相同工作条件下，膜生物反应器系统对COD、氨氮和TN的去除效率比活性污泥系统中去除效率高。总体来说膜生物反应器系统中更容易实现同步硝化反硝化，并且同步硝化反硝化效果更好。 (2) 通过在活性污泥系统和膜生物反应器系统中的研究说明：DO是同步硝化反硝化的一个限制条件，本实验表明，膜生物反应器系统中DO控制在0.8mp／L-1.0 mg／L时，能实现比较好的同步硝化反硝化效果；C／N比是同步硝化反硝化的一个重要影响因素，进水COD／TN比值越低，总氮的去除率相应的也越低；pH值是影响同步硝化反硝化的重要因素，且最佳pH值在中性略微偏碱处；F／M能影响同步硝化反硝化，在不影响硝化过程的前提下，F／M的提高是有利于同步硝化反硝化的进行。 (3) 通过对活性污泥系统和膜生物反应器系统中同步硝化反硝化机制的探讨表明：微观环境理论和微生物学理论可以对同步硝化反硝化的机理进行阐述。 (4) 通过本实验可以说明：DO、C／N比对同步硝化反硝化的影响机制在两种系统(活性污泥系统和膜生物器系统中)是一致的。 (5) 污泥有机负荷是影响同步硝化反硝化效果的另一关键因素。不同溶解氧浓度下，发生同步硝化反硝化现象的污泥有机负荷也是不一样的。通过本实验发现，膜生物反应器系统中，当DO为0.8mg／L时，污泥有机负荷在0.15-0.36KgCOD／KgMLSS·d之间时能发生比较好的同步硝化反硝化现象。更多还原

【Abstract】 The paper has researched the theory of simultaneous nitrification and denitrification (SND) in Activated Sludge System and MBR which based on domestic and foreign researchs on SND. And the paper has paid more attention research on the theory of simultaneous nitrification and denitrification (SND) in MBR. The main conclusions are as follows:(1) According to the experimental results,the paper has proved that Simultaneous nitrification and denitrification(SND) can occur concurrently in Activated Sludge System and MBR. Compared SND in the Activated Sludge System with SND in MBR and found that the MBR has a higher removal efficiency of COD, ammonia and TN than the Activated Sludge System. As a whole,In the MBR is easier to realize simultaneous nitrification and denitrification (SND) than activated Sludge System ,and the effect is better.(2) The experimental results in Activated Sludge System and MBR showed that DO is a limiting factor to Simultaneous nitrification and denitrification(SND), C/N is a key factor to Simultaneous nitrification and denitrification(SND),and pH is a important factor to Simultaneous nitrification and denitrification(SND).According to the experimental results, The efficiency of simultaneous nitrification and denitrification is the best when DO concentration is 0.8mg/L-1.0 mg/L and pH is neutral to alkalescent. With reduction of COD/TN,the TN removal efficiency becomes lower. But the TN removal efficiency increasing with enhancing F/M.(3) The influence mechanism on the efficiency of nitrogen by SND in Activated Sludge System and MBR was discussed. The effects of different factors on the efficiency of nitrogen by SND in Activated Sludge System and MBR could be explained by the theory which including microscopic environment theory and microbiology theory.(4) According to the experimental results, the influence mechanism which DO and C/N affect on SND is consistent in Activated Sludge System and MBR.(5) F/M is another key factor impacting on the simultaneous nitrification and denitrification(SND).For the best efficiency of simultaneous nitrification and更多还原