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  • 彭荷衢,刁兴兴,张伟军,彭立宇,赵晴,孟了,张鑫,吕慧.两级自养反硝化实现垃圾渗滤液的深度脱氮[J].环境工程学报,2019,13(9):2113-2120.DOI:10.12030/j.cjee.201901114    [点击复制]
  • PENG Hequ,DIAO Xingxing,ZHANG Weijun,PENG Liyu,ZHAO Qing,MENG Liao,ZHANG Xin,LYU Hui.Deep denitrification of landfill leachate by two-stage autotrophic denitrification process[J].,2019,13(9):2113-2120.DOI:10.12030/j.cjee.201901114   [点击复制]
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两级自养反硝化实现垃圾渗滤液的深度脱氮
彭荷衢1,2, 刁兴兴3, 张伟军3, 彭立宇1,2, 赵晴4, 孟了5, 张鑫6, 吕慧1,2
0
(1. 中山大学环境科学与工程学院,广州 510275;2. 中山大学深圳研究院,深圳 518057;3. 深圳市利赛实业发展有限公司,深圳 518029;4. 广州大学土木工程学院,广州 510006;5. 深圳市下坪固体废弃物填埋场,深圳 518047;6.6. 黑龙江工程学院土木与建筑工程学院,哈尔滨 150050)
摘要:
针对目前生物工艺难以解决垃圾渗滤液深度脱氮的问题,探究了短程硝化反硝化-厌氧氨氧化-硫自养反硝化(两级自养)工艺处理高氨氮、低C/N比垃圾渗滤液的脱氮效果。结果表明, 当进水垃圾渗滤液中氨氮平均浓度为2 560 mg·L−1,COD值为4 000~5 000 mg·L−1时,经过短程硝化反硝化-厌氧氨氧化处理后,总氮去除负荷可达1.19 kg·(m3·d)−1、总氮去除率可达93.1%(出水TN=176.3 mg·L−1)、COD去除率可达52.2%。但是,厌氧氨氧化反应器出水中NOx--N浓度为154.5 mg·L−1,仍未达到我国生活垃圾填埋场垃圾渗滤液处理排放标准(TN≤40 mg·L−1)。在厌氧氨氧化反应器之后串联硫自养反硝化,整体工艺最终出水NH4+-N、NO2--N、NO3--N平均浓度分别为1.9、0.6、9.7 mg·L−1,TN≤15 mg·L−1,进水总氮去除率为99.5%。在短程硝化反硝化-厌氧氨氧化-硫自养反硝化两级自养深度脱氮反应系统中实现了垃圾渗滤液深度脱氮。
关键词:  自养脱氮  垃圾渗滤液  厌氧氨氧化  硫自养反硝化
DOI:10.12030/j.cjee.201901114
投稿时间:2019-01-16
基金项目:国家自然科学基金资助项目(51508115);广州市珠江科技新星项目(201610010165);广东省特支计划科技创新青年拔尖人才(2016TQ03Z336);哈尔滨市科技创新人才研究专项资金项目(2017RAQXJ020)
Deep denitrification of landfill leachate by two-stage autotrophic denitrification process
PENG Hequ1,2, DIAO Xingxing3, ZHANG Weijun3, PENG Liyu1,2, ZHAO Qing4, MENG Liao5, ZHANG Xin6, LYU Hui1,2
(1. School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou 510275, China;2. Shenzhen Research Institute of Sun Yat-Sen University, Shenzhen 518057, China;3. Shenzhen Lisai Development Co. Ltd., Shenzhen 518029, China;4. School of Civil Engineering, Guangzhou University, Guangzhou 510006, China;5. Shenzhen Xiaping Municipal Solid Waste Landfill Site, Shenzhen 518047, China;6.6. School of Civil and Architecture Engineering, Heilongjiang Institute of Technology, Harbin 150050, China)
Abstract:
In view of the difficulty of deep denitrification in the treatment of landfill leachate by biological process at present, a new process coupling partial nitrification-denitrification-anaerobic ammonia oxidation (ANAMMOX) and sulfur-driven autotrophic denitrification (SAD) was applied to treat the landfill leachate with high ammonia nitrogen and low C/N ratio. The results showed that at the ammonia concentrations of 2 560 mg·L-1 and COD of 4 000~5 000 mg·L-1 in the influent landfill leachate, the total nitrogen removal load, nitrogen removal efficiency and COD removal efficiency were 1.19 kg·(m3·d)-1, 93.1% (the total nitrogen concentration in effluent was 176.3 mg·L-1), and 52.2% after partial nitrification-denitrification-ANAMMOX treatment, respectively. However, NOx--N concentration in the effluent of the ANAMMOX reactor was 154.5 mg·L-1, which could not meet the effluent quality standard of TN≤40 mg·L-1 in domestic solid waste landfill. When the SAD was coupled with partial nitrification-denitrification-ANAMMOX process in a series connection mode, the average concentrations of NH4+-N, NO2--N, NO3--N in the effluent of the whole process were 1.9, 0.6 and 9.7 mg·L-1, respectively, the total nitrogen concentration was below 15 mg·L-1, the nitrogen removal efficiency reached 99.5%. Deep denitrification of landfill leachate was achieved by two-stage autotrophic deep denitrification process of partial nitrification-denitrification-ANAMMOX-SAD.
Key words:  autotrophic denitrification  landfill leachate  anaerobic ammonia oxidation  sulfur-driven autotrophic denitrification