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主管单位 中华人民共和国
工业和信息化部
主办单位 哈尔滨工业大学 主编 李隆球 国际刊号ISSN 0367-6234 国内刊号CN 23-1235/T

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引用本文:李建政,孟佳,赵博玮,艾斌凌.养猪废水厌氧消化液SBR短程硝化系统影响因素[J].哈尔滨工业大学学报,2014,46(8):27.DOI:10.11918/j.issn.0367-6234.2014.08.005
LI Jianzheng,MENG Jia,ZHAO Bowei,AI Binling.Main influence factors for shortcut nitrification in a SBR treating anaerobic digested piggery wastewater[J].Journal of Harbin Institute of Technology,2014,46(8):27.DOI:10.11918/j.issn.0367-6234.2014.08.005
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养猪废水厌氧消化液SBR短程硝化系统影响因素
李建政1,2, 孟佳1, 赵博玮1, 艾斌凌1
(1. 哈尔滨工业大学 市政环境工程学院, 150090 哈尔滨; 2. 哈尔滨工业大学 城市水资源与水环境国家重点实验室, 150090 哈尔滨)
摘要:
针对养猪废水厌氧消化液较高残留的氨氮,为开发短程硝化-反硝化脱氮工艺,以序批式活性污泥反应器(SBR)的运行为基础,探讨温度、氨氮负荷(Rnl)和曝气时间对活性污泥系统短程硝化特征的影响.结果表明: 在28和15 ℃ 条件下,将溶解氧控制为1.0~2.0 mg·L-1时,SBR系统均能实现良好的短程硝化功能;但在15 ℃条件下,氨氮去除率和亚硝酸盐积累率(Rna)较28 ℃均有显著下降,分别从71.1%和96.7%降到52.8%和85.4%;在28 ℃条件下,氨氮负荷由0.56 kg·m-3·d-1大幅提高到2.18 kg·m-3·d-1后,SBR系统的氨氮去除率显著降为48.6%,但Rna仍然高达96.8%,保持了良好的短程硝化性能.Rnl较高时,可适当延长曝气时间以强化SBR系统的氨氮氧化能力. 但曝气时间过长会导致大量NO2--N的氧化,Rna显著下降.
关键词:  养猪废水  厌氧消化液  序批式活性污泥反应器  短程硝化
DOI:10.11918/j.issn.0367-6234.2014.08.005
分类号:X703.1
基金项目:国家自然科学基金资助项目(51178136).
Main influence factors for shortcut nitrification in a SBR treating anaerobic digested piggery wastewater
LI Jianzheng1,2, MENG Jia1, ZHAO Bowei1, AI Binling1
(1. School of Municipal and Environmental Engineering, Harbin Institute of Technology, 150090 Harbin, China; 2. State Key Laboratory of Urban Water Resource and Environment,Harbin Institute of Technology,150090 Harbin,China)
Abstract:
To develop a shortcut nitrification process for treating anaerobic digested piggery wastewater with a high ammonia concentration, a sequencing batch reactor (SBR) was introduced, and the temperature, ammonia nitrogen loading rate (Rnl) and aeration time were investigated as the significant influence factors of the shortcut nitrification. The shortcut nitrification process could be established in the SBR at 28 ℃ or 15 ℃ with the identical dissolved oxygen (DO), ranged from 1 to 2 mg·L-1. But the ammonia removal and nitrite accumulation rate Rna were decreased from 71.1% and 96.7% to 52.8% and 85.4%, respectively, when the temperature was dropped from 28 ℃ to 15 ℃. Though the ammonia removal rate was decreased to 48.6% since the Rnl had been increased from 0.56 to 2.18 kg·m-3·d-1 at 28 ℃, a Rna as high as 96.8% was obtained, indicating that an excellent shortcut nitrification occurred in the SBR. To obtain a superior ammonia oxidation with a higher Rnl, extension of aeration time would be supportive. But an excessive aeration could result in an increase in nitrate and a decrease in Rna, which was unfeasible for the shortcut nitrification process in the SBR.
Key words:  piggery wastewater  anaerobic digestion liquor  sequencing batch reactor (SBR)  shortcut nitrification process

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