同步短程硝化反硝化工艺启动性能研究  

Study on Start-Up and Nitrogen Removal Performance of Synchronous Short-Cut Nitrification and Denitrification Process

作　　者：叶啸天 戎振英 刘行平 唐思敏 孙静亚 阳广凤 YE Xiao-tian;RONG Zhen-ying;LIU Xing-ping(School of Marine Science and Technology of Zhejiang Ocean University,Zhoushan 316022,China)

机构地区：[1]浙江海洋大学海洋科学与技术学院,浙江舟山316022

出　　处：《浙江海洋大学学报（自然科学版）》2022年第1期76-80,共5页Journal of Zhejiang Ocean University：Natural Science

基　　金：浙江省省属高校基本科研业务费(2019J00050);“海洋科学”浙江省一流学科建设开放课题(20190009)。

摘　　要：水体氮素污染治理是当下全球环境保护重要的课题之一,氮素污染易导致水体富营养化从而破坏水生生态系统。同步短程硝化反硝化工艺作为新型且高效的废水生物脱氮工艺,得到广泛关注。为研究同步短程硝化反硝化工艺的启动运行性能,试验在室温条件下,以模拟废水为处理对象,采用逐步降低亚硝氮浓度和提高氨氮水平的方式启动同步短程硝化反硝化工艺。试验结果表明,反应器在短程反硝化阶段亚硝氮的平均去除率为92.0%,部分同步短程硝化反硝化亚硝氮的平均去除率为97%,而同步短程硝化反硝化因为游离氨抑制和污泥洗出导致氨氮去除率降低,但短程反硝化作用较好,系统出水几乎无亚硝氮和硝氮累积。Nitrogen pollution in water body can easily lead to eutrophication and damage aquatic ecosystem.As a new and efficient biological nitrogen removal process,simultaneous shortcut nitrification and denitrification process(SND)has been widely concerned.In order to study the start-up performance,simultaneous shortcut nitrification and denitrification process was established at room temperature and started by gradually reducing the nitrite concentration and increasing the ammonia nitrogen level.Experimental results showed that the average nitrite removal efficiency was 92.0%in the short cut denitrification stage,and 97%in the partial simultaneous short cut nitrification and denitrification stage.However,the removal efficiency of ammonia was reduced in the simultaneous short cut nitrification and denitrification because of free ammonia inhibition and washing out of sludge,but the short cut denitrification was allways better and no nitrite and nitrate was accumulated in the effluent.

关 键 词：同步短程硝化反硝化 废水 脱氮 亚硝氮 

分 类 号：X703.1[环境科学与工程—环境工程]