同步硝化反硝化除磷颗粒污泥的快速启动与强化  

Rapid start-up and enhancement of simultaneous nitrification-denitrification phosphorus removal granular sludge

作　　者：解舒婷 代伟 XIE Shuting;DAI Wei(School of Equipment Engineering,Shanxi Vocational University of Engineering Science and Technology,Taiyuan 030000,Shanxi,China;School of Environment,Harbin Institute of Technology,Harbin 150090,Heilongjiang,China)

机构地区：[1]山西工程科技职业大学设备工程学院,山西太原030000 [2]哈尔滨工业大学环境学院,黑龙江哈尔滨150090

出　　处：《化工进展》2024年第10期5976-5983,共8页Chemical Industry and Engineering Progress

基　　金：山西省基础研究计划(自由探索类)(202303021212309);山西省住房和城乡建设厅科学技术计划(JJKJ2024020);山西工程科技职业大学高层次人才启动基金(RCK202213)。

摘　　要：为了探究同步硝化反硝化除磷颗粒污泥系统的快速启动,本研究首先通过饥饿-饱食、逐步缩短沉淀时间的培养方式进行污泥造粒;其次通过定期投加30mg/L的NO_(2)--N,提供高浓度亚硝酸盐环境以强化氮磷去除;最后进一步提高系统氮负荷,考察其运行氮磷去除效率。系统在28天的培养下实现污泥快速颗粒化,MLSS稳定在5.6~6.2g/L,SVI30/SVI5达到0.96,颗粒沉降性能良好。通过亚硝酸盐强化,系统厌氧释磷量从3.51mg/L提升至29.4mg/L,同时NOB活性被抑制,实现短程硝化反硝化除磷。系统在C/N/P质量比为420/80/10的条件下,实现了99.85%的总氮去除与99.43%的磷去除。微生物群落分析表示在该启动策略下Acinetobacter菌属占据主导地位。In order to explore the rapid start-up of simultaneous nitrification-denitrification phosphorus removal granular sludge system,this study first cultivated sludge granulation through starvation-repletion and gradually shortened sedimentation time.By regularly adding 30 mg/L NO_(2)--N,a high concentration of nitrite environment was provided to enhance nitrogen and phosphorus removal.The nitrogen load of the system was further increased to examine its nitrogen and phosphorus removal efficiency.The system achieved rapid sludge granulation after 28 days of cultivation,with MLSS stabilized at 5.6-6.2g/L and SVI30/SVI5 reaching 0.96,indicating good particle settling performance.Through nitrite enhancement,the anaerobic phosphorus release of the system increased from 3.51mg/L to 29.4mg/L,while NOB activity was inhibited,achieving short-cut nitrification-denitrification phosphorus removal.Under the condition of C/N/P=420/80/10(w/w/w),the system achieved 99.85%total nitrogen removal and 99.43%phosphorus removal.Microbial community analysis revealed that the genus Acinetobacter predominated under this initiation strategy.

关 键 词：同步硝化反硝化 强化除磷 颗粒污泥 微生物群落 亚硝酸盐 

分 类 号：X703[环境科学与工程—环境工程]