固相碳源的特性对生物反硝化脱氮技术的影响研究进展  

Research progress on the influence of solid carbon source characteristics on biological denitrification technology

作　　者：柴文云 郭亚南 杨铮 朱烨 侯俊[1,2] 苗令占[1,2] CHAI Wenyun;GUO Yanan;YANG Zheng;ZHU Ye;HOU Jun;MIAO Lingzhan(College of Environment,Hohai University;Key Laboratory of Integrated Regulation and Resources Development on Shallow Lakes of Ministry of Education;Evaluation Center of Ecological Environment Bureau of Qamdo City;Guangzhou Urban Construction Planning and Design Institute Co.,Ltd.Yunnan Branch)

机构地区：[1]河海大学环境学院 [2]浅水湖泊综合治理与资源开发教育部重点实验室 [3]昌都市生态环境局评估中心 [4]广州市城建规划设计院有限公司云南分公司

出　　处：《环境工程技术学报》2024年第3期963-972,共10页Journal of Environmental Engineering Technology

基　　金：国家重点研发计划项目(2023YFC3208903);河海大学优秀硕士学位论文培育计划(422003474)。

摘　　要：固相碳源反硝化技术是处理低碳氮比污水的重要手段之一,其影响生物反硝化效率的重要因素是碳源特性。针对碳源的自身特性对反硝化的作用原理尚不明晰的问题,从固相碳源应用于脱氮的原理出发,比较和揭示了不同类型固相碳源(人工合成可生物降解聚合物、天然纤维素物质和混合固相碳源)的优势与应用前景,详细梳理了碳源的理化性质(合成物质、释碳组成、表面特性)和投加位点等对污水处理中生物反硝化过程的影响。结果表明,固相碳源的释碳量和利用率是影响反硝化效率的重要因素,通过优化材料组成和混合方式等来改变材料特性可以实现释碳最大化利用,使释放组分更好地被反硝化微生物利用。提出未来固相碳源领域应从改进碳源合成方式和研究电子传递机理等角度优化释碳能力及提高反硝化速率,以期深入开发及推广新型的固相碳源。Solide carbon source denitrification technology is a pivotal strategy for treating low carbon-to-nitrogen(C/N)wastewater,and the important factor affecting the efficiency of biological denitrification is the characteristics of the carbon source.The advantages and application prospects of various types of solid carbon sources,including synthetic biodegradable polymers,natural cellulosic substances,and mixed solid carbon sources,were compared and elucidated,aiming at the unclear principle of their application in nitrogen removal.Detailed analysis was conducted on the influences of physical and chemical properties of carbon sources(such as synthetic substances,carbon released composition,and surface characteristics)and the dosing sites,etc.on the biological denitrification process.The results indicated that the carbon release and its subsequent utilization rate by denitrifying microorganisms were crucial determinants of denitrification efficiency.By optimizing material composition and mixing methods to modify the material characteristics,carbon release could be maximized and the released components could be better utilized by denitrifying microorganisms.It was proposed that the future solid carbon source field should focus on enhancing carbon release capabilities and denitrification rates through advancements in the synthesis of carbon sources and the elucidation of electron transfer mechanisms,to deeply develop and promote novel solid carbon sources.

关 键 词：反硝化 固相碳源 特性 可生物降解聚合物 氮污染 

分 类 号：X703[环境科学与工程—环境工程]