Industrial Water Treatment ›› 2022, Vol. 42 ›› Issue (4): 46-56. doi: 10.19965/j.cnki.iwt.2021-0238

• SUMMARIES AND THESES ON SPECIAL TOPICS • Previous Articles     Next Articles

Research progress on influencing factors of partial nitrification and its coupling process

Kaicheng GUO1(), Wenru LIU1,2,3, Jiajun SONG1, Qian WANG1, Yaoliang SHEN1,2,3()   

  1. 1. School of Environmental Science and Engineering,Suzhou University of Science and Technology,Suzhou 215009,China
    2. National and Local Joint Engineering Laboratory for Municipal Sewage Resource Utilization Technology,Suzhou 215009,China
    3. Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment,Suzhou 215009,China
  • Received:2022-03-15 Online:2022-04-20 Published:2022-06-07

短程硝化的影响因素及其耦合工艺的研究进展

郭凯成1(), 刘文如1,2,3, 宋家俊1, 汪倩1, 沈耀良1,2,3()   

  1. 1. 苏州科技大学环境科学与工程学院, 江苏 苏州 215009
    2. 城市生活污水资源化利用技术国家地方联合工程实验室, 江苏 苏州 215009
    3. 江苏省水处理技术与材料协同创新中心, 江苏 苏州 215009

Abstract:

One of the direct causes of eutrophication in freshwater ecosystems is excessive nitrogen loading. Phytoplankton bloom caused by eutrophication in water will consume dissolved oxygen in water bodies, produce natural toxins that are threatening to humans, make water bodies unfit for drinking, key species disappear, and eventually lead to degradation of freshwater ecosystems. As the front-end treatment stage of biological denitrification, partial nitrification has been widely concerned for its high efficiency and low consumption. The influencing factors of partial nitrification, such as microorganisms, temperature, pH, FA, FNA, DO, carbon-nitrogen ratio, and chemical inhibitors in recent partial nitrification studies were summarized. The reaction mechanisms, types of treated wastewater and operating conditions of new biological denitrification processes such as partial nitrification coupled with denitrification(PND), partial nitrification coupled with anammox(PNA), partial nitrification coupled with denitrification and phosphorus removal(PN-DPR) were also reviewed. The coupled processes need to be further studied for efficient and energy-saving treatment of actual wastewater.

Key words: partial nitrification, coupling process, actual sewage

摘要:

氮素负荷过高是淡水生态系统富营养化的直接原因之一。水体富营养化会导致藻类水华现象发生,消耗水体中的溶解氧,产生对人体有威胁的天然毒素,使水体不宜饮用、关键物种消失,最终导致淡水生态系统的退化。作为生物脱氮的前端处理阶段,短程硝化具有高效、低耗的性能而被人们广泛关注。对近年来短程硝化研究中的各影响因素,如微生物、温度、pH、游离氮、游离亚硝酸盐、DO、碳氮比、化学抑制剂等进行总结,同时综述了短程硝化耦合反硝化(PND)、短程硝化耦合厌氧氨氧化(PNA)及短程硝化耦合反硝化除磷(PN-DPR)等新型生物脱氮工艺的反应机理、处理废水种类及运行条件。上述耦合工艺对实际污水进行高效节能处理还需进一步研究。

关键词: 短程硝化, 耦合工艺, 实际污水

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