生活污水SBR亚硝化颗粒污泥的快速启动

发布时间：2018-03-25 01:16

本文选题：序批式反应器　切入点：亚硝化　出处：《高校化学工程学报》2016年01期

【摘要】：采用R1,R2两组序批式反应器(SBR),研究生活污水亚硝化颗粒污泥的快速启动策略。其中R1接种的硝化絮状污泥中添加30%亚硝化颗粒污泥,R2只接种硝化絮状污泥。结果表明,R1经12 d(48个周期)启动成功,R2经过42 d(168个周期)启动成功,两个反应器的亚硝化率均能稳定维持在95%以上,颗粒平均粒径在第60天分别达到了922μm和625μm。采用亚硝化和颗粒化同时进行的策略可以快速启动亚硝化颗粒污泥,接种部分亚硝化颗粒污泥可以进一步缩短启动时间。而R1中PS/PN的变化比较平稳,说明R1中的微生物能够尽快的适应新的环境,抵御环境的变化。出水浊度和SVI的检测结果表明,R1的颗粒结构比R2紧凑,且凝聚沉降性能比R2好,R1更有利于污泥浓度的增长。
[Abstract]:The rapid start-up strategy of nitrifying granular sludge in domestic sewage was studied by using R1 / R2 sequencing batch reactor, in which 30% nitrification granular sludge was added to the nitrifying flocculation sludge inoculated with R1, and only nitrifying flocculating sludge was inoculated with R1. The results show that only 30% nitrification granular sludge was added to the nitrifying granular sludge inoculated with R1. R1 was successfully started in 12 days (48 cycles) and R2 was successfully started in 42 days (168 cycles). The nitrification rate of the two reactors was stable above 95%, and the average particle size reached 922 渭 m and 625 渭 m on the 60th day, respectively. Using the strategy of simultaneous nitrification and granulation, the nitrosated granular sludge could be started quickly. Inoculation of partial nitrosated granular sludge can further shorten the start-up time, while the change of PS/PN in R1 is relatively stable, which indicates that the microorganisms in R1 can adapt to the new environment as soon as possible. The results of turbidity of effluent and SVI showed that the particle structure of R1 was more compact than R2, and the agglomeration of R1 was more favorable to the increase of sludge concentration than R2.
【作者单位】：北京工业大学水质科学与水环境恢复工程北京市重点实验室;哈尔滨工业大学城市水资源与水环境国家重点实验室;
【基金】：国家自然科学基金(51222807) 国家重大科技专项水专项(2012ZX07202-005)
【分类号】：X703.1

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