孙宁2,
李召旭1,
蒋然1
1.珠江水利委员会珠江水利科学研究院资源与环境研究所，广州510611
2.中国能源建设集团广东省电力设计研究院有限公司水务部，广州510663
基金项目: 国家自然科学基金资助项目（51409287）
广东省自然科学基金资助项目（2017A030313329）
广东省水利科技创新项目（2016-10）
Sulfide-driven and nitrite-oxidizing bacteria(NOB) inhibition shortcut nitrification and denitrification biological nitrogen removal technology
CHANG Ze1,SUN Ning2,
LI Zhaoxu1,
JIANG Ran1
1.Institute of Resources and Environment, Pearl River Hydraulic Research Institute, Pearl River Water Resources Commission, Guangzhou 510611,China
2.Water Engineering Department,China Energy Engineering Group Guangdong Electric Power Design Institude Co.LTD.,Guangzhou 510663,China
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摘要:利用硫化物对亚硝酸盐氧化菌的抑制作用，快速建立短程硝化。通过改变供氧条件，硫化物作为电子供体推动自养反硝化，实现同一序批反应器一体化脱氮。采用序批反应器SBR处理模拟市政污水，在DO浓度（1.5±0.5） mg·L-1，硫化物浓度50 mg·L-1，温度25 ℃，水力停留时间12 h的条件下，共运行90 d，控制反应器厌氧低氧时间，达到90%以上的总氮去除率。同时研究了硫化物对短程硝化的抑制作用、最适宜运行pH条件、污泥颗粒大小变化、污泥产生量等。硫化物抑制亚硝酸盐氧化菌推动短程硝化反硝化生物脱氮技术有着反应条件可控性高、短程硝化建立时间短、脱氮效果好等优点，适用于低碳氮比的市政污水处理。
关键词: 硫化物/
短程硝化反硝化/
市政污水/
低碳氮比
Abstract:The shortcut nitrification (nitritation) process can be rapidly and stably established by inhibition of sulfide on nitrite oxidizing bacteria (NOB). By changing oxygen supply conditions, sulfide was used as electron donors to promote autotrophic denitrification and to achieve integrated nitrogen removal in the same sequencing batch reactor. The batch reactor was used to treat simulated municipal wastewater for 90 d under the conditions of DO concentration （1.5±0.5） mg·L?1, sulfide concentration 50 mg·L-1, temperature 25 ℃ and hydraulic retention time 12 h. By controlling anaerobic and hypoxia time, the reactor can achieve 90% total nitrogen removal rate. At the same time, the inhibition of sulfide on shortcut nitrification, optimum pH conditions for operation, changes in sludge particle size, and sludge yields were investigated. The technology of sulfide inhibiting nitrite oxidizing bacteria(NOB) promoting shortcut nitrification and denitrification in biological nitrogen removal has the advantages of high controllability of reaction conditions, short-term nitrification establishment time and good effect on nitrogen removal, which is suitable for the municipal sewage treatment with low carbon to nitrogen ratio.
Key words:sulfide/
shortcut nitrification and denitrification/
municipal sewage/
low C/N ratio.
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| [2] | HENZE M,VAN LOOSDRECHT M C M,EKAMA G A, et al.Biological Wastewater Treatment: Principles, Design and Modelling[M].London:IWA,2008 |
| [3] | 宋宏宾,蒋进元,周岳溪,等.低C/N比水产养殖废水生物脱氮实验研究[J]. 环境工程学报,2010,4(5):998-1002 |
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| [8] | 曾薇,张悦,李磊,等.生活污水常温处理系统中AOB与NOB竞争优势的调控[J]. 环境科学,2009,30(5):1430-1436 |
| [9] | ERGUDER T H,BOON N,VLAEMINCK S E, et al.Partial nitrification achieved by pulse sulfide doses in a sequential batch reactor[J].Environmental Science & Technology,2008,42(23):8715-8720 |
| [10] | BECKER M,MARTIENSSEN M,FUHRMANN B, et al.Analyzing nitrogen and sulphide elimination from leachate by coulometric continuous flow titration[J]．Engineering in Life Sciences,1997,17(1):39-50 |
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| [15] | 荣宏伟,李权斌,邓杰,等.NaClO3对短程硝化系统的影响[J].中国给水排水,2016,32(15):108-113 |
| [16] | 宋学起,彭永臻,王淑莹,等.投加抑制剂实现短程硝化反硝化[J].水处理技术,2005,31(4):38-40 |
| [17] | 孙学影,高大文,卢健聪.基于硫化物硝酸菌抑制的城市污水单级自养脱氮工艺研究[J]. 环境科学学报,2013,33(8):2218-2225 |
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硫化物抑制亚硝酸氧化菌推动短程硝化反硝化生物脱氮技术
常赜1,孙宁2,
李召旭1,
蒋然1
1.珠江水利委员会珠江水利科学研究院资源与环境研究所，广州510611
2.中国能源建设集团广东省电力设计研究院有限公司水务部，广州510663
基金项目: 国家自然科学基金资助项目（51409287） 广东省自然科学基金资助项目（2017A030313329） 广东省水利科技创新项目（2016-10）
关键词: 硫化物/
短程硝化反硝化/
市政污水/
低碳氮比
摘要:利用硫化物对亚硝酸盐氧化菌的抑制作用，快速建立短程硝化。通过改变供氧条件，硫化物作为电子供体推动自养反硝化，实现同一序批反应器一体化脱氮。采用序批反应器SBR处理模拟市政污水，在DO浓度（1.5±0.5） mg·L-1，硫化物浓度50 mg·L-1，温度25 ℃，水力停留时间12 h的条件下，共运行90 d，控制反应器厌氧低氧时间，达到90%以上的总氮去除率。同时研究了硫化物对短程硝化的抑制作用、最适宜运行pH条件、污泥颗粒大小变化、污泥产生量等。硫化物抑制亚硝酸盐氧化菌推动短程硝化反硝化生物脱氮技术有着反应条件可控性高、短程硝化建立时间短、脱氮效果好等优点，适用于低碳氮比的市政污水处理。
English Abstract
Sulfide-driven and nitrite-oxidizing bacteria(NOB) inhibition shortcut nitrification and denitrification biological nitrogen removal technology
CHANG Ze1,SUN Ning2,
LI Zhaoxu1,
JIANG Ran1
1.Institute of Resources and Environment, Pearl River Hydraulic Research Institute, Pearl River Water Resources Commission, Guangzhou 510611,China
2.Water Engineering Department,China Energy Engineering Group Guangdong Electric Power Design Institude Co.LTD.,Guangzhou 510663,China
Keywords: sulfide/
shortcut nitrification and denitrification/
municipal sewage/
low C/N ratio
Abstract:The shortcut nitrification (nitritation) process can be rapidly and stably established by inhibition of sulfide on nitrite oxidizing bacteria (NOB). By changing oxygen supply conditions, sulfide was used as electron donors to promote autotrophic denitrification and to achieve integrated nitrogen removal in the same sequencing batch reactor. The batch reactor was used to treat simulated municipal wastewater for 90 d under the conditions of DO concentration （1.5±0.5） mg·L?1, sulfide concentration 50 mg·L-1, temperature 25 ℃ and hydraulic retention time 12 h. By controlling anaerobic and hypoxia time, the reactor can achieve 90% total nitrogen removal rate. At the same time, the inhibition of sulfide on shortcut nitrification, optimum pH conditions for operation, changes in sludge particle size, and sludge yields were investigated. The technology of sulfide inhibiting nitrite oxidizing bacteria(NOB) promoting shortcut nitrification and denitrification in biological nitrogen removal has the advantages of high controllability of reaction conditions, short-term nitrification establishment time and good effect on nitrogen removal, which is suitable for the municipal sewage treatment with low carbon to nitrogen ratio.
