硫自养反硝化工艺亚硝酸盐积累研究进展  

Research progress on nitrite accumulation in sulfur-based autotrophic denitrification process

作　　者：平彩霞 周鑫[1,2] 聂裕婷 PING Caixia;ZHOU Xin;NIE Yuting(College of Environmental Science and Engineering,Taiyuan University of Technology,Jinzhong 030600,China;Innovation Center for Postgraduate Education in Municipal Engineering of Shanxi,Jinzhong 030600,China)

机构地区：[1]太原理工大学环境科学与工程学院,山西晋中030600 [2]山西省市政工程研究生教育创新中心,山西晋中030600

出　　处：《工业水处理》2024年第8期21-28,共8页Industrial Water Treatment

基　　金：国家自然科学基金项目(21607111);山西省基础研究计划项目(20210302123198);山西省专利转化计划项目(202401011)。

摘　　要：厌氧氨氧化(Anammox)由于具有不需外加碳源、污泥产量少、运行费用低等优势,被认为是一种最为高效、经济的污水生物脱氮新技术。然而,亚硝酸盐(NO_(2)^(-)-N)积累是Anammox发生的必要前提。研究表明:短程硝化存在亚硝酸盐氧化菌活性难以稳定抑制的问题,而异养短程反硝化又存在需要外加碳源、碳排放量大等问题。近年来,硫驱动的短程自养反硝化(SPAD)作为一种NO3--N还原为NO_(2)^(-)-N的新方法,因其具有不需要投加有机碳源、经济成本低、环境友好等优势而受到广泛关注。基于此,结合大量国内外文献,全面介绍了SPAD的工艺原理、NO_(2)^(-)-N积累影响因素、脱氮过程副产物、关键菌群和功能基因,并系统总结了SPAD处理效能,最后对各种类型SPAD工艺的经济性能进行了比较分析并提出了未来的研究展望。Anaerobic ammonia oxidation(Anammox)is regarded as one of the most cost-effective wastewater biologi⁃cal nitrogen removal technologies due to no need for external organics,low sludge production,and low operating costs.However,nitrite(NO_(2)^(-)-N)accumulation is an necessary prerequisite for Anammox.Researches have shown that partial nitrification has the difficulty of stably suppressing the activity of nitrite oxidizing bacteria,while hetero⁃trophic partial denitrification has some issues such as additional carbon source and high carbon emissions.In recent years,sulfur-based partial autotrophic denitrification(SPAD)as a new method of reducing NO3--N to NO_(2)^(-)-N has at⁃tracted extensive attentions because of no need for external organic carbons,low economic costs,and environmental friendliness.Therefore,the study comprehensively reviewed the process principle,NO_(2)^(-)-N accumulation influenc⁃ing factors,by-products of denitrification process,key bacterial and functional genes and systematically summarized the efficiency of SPAD.Finally,the economic performance of different types of SPAD was compared and the future research prospect was proposed.

关 键 词：硫短程自养反硝化 亚硝酸盐积累 电子供体 

分 类 号：X703[环境科学与工程—环境工程]