摘要
借助深床反硝化生物滤池对葡萄糖和乙酸钠两种碳源的挂膜及硝态氮去除性能进行了对比研究。试验结果表明,当碳氮比为3时,连续投加葡萄糖36 h以上,滤池内部开始进入缺氧环境,此时出水硝态氮浓度开始降低;而乙酸钠在碳氮比为3.2时,需连续投加碳源26 h,出水DO才开始降低到0.5 mg/L以下,此时滤池出水硝态氮浓度开始降低。当碳源均按照葡萄糖和乙酸钠的最佳碳氮比进行投加时,硝态氮最大去除率分别为82%和85%;此外,当以葡萄糖作为碳源时,反洗排水中MLSS约为乙酸钠的3倍。
Biofilm formation and nitrate nitrogen removal performance were compared in a deep bed denitrification biological filter with glucose and sodium acetate as carbon sources. When the carbon and nitrogen ratio was 3,anoxic environment was formed inside the filter after continuous addition of glucose for more than 36 hours,and the effluent nitrate nitrogen began to decrease. When the carbon and nitrogen ratio was 3. 2,the effluent DO decreased to less than 0. 5 mg/L after continuous addition of sodium acetate for 26 hours,and the effluent nitrate nitrogen began to decrease. The maximum removal rates of nitrate nitrogen were 82% and 85%,respectively,when the carbon sources were added in accordance with the optimal carbon and nitrogen ratio of glucose and sodium acetate. In addition,MLSS of backwash drainage was about 3 times that of sodium acetate when glucose was used as carbon source.
作者
张朋锋
马乐宁
赵金
王程
赵书勤
ZHANG Peng-feng;MA Le-ning;ZHAO Jin;WANG Cheng;ZHAO Shu-qin(Xylem<China>Co.Ltd.,Shanghai 200051,China;China ENFI Engineering Corporation,Beijing 100038,China;Chongqing Three Gorges Water Beibei Drainage Co.Ltd.,Chongqing 400700,China)
出处
《中国给水排水》
CAS
CSCD
北大核心
2020年第3期92-96,共5页
China Water & Wastewater
关键词
深床反硝化生物滤池
葡萄糖
乙酸钠
碳氮比
溶解氧
deep bed denitrification biological filter
glucose
sodium acetate
carbon and nitrogen ratio
dissolved oxygen
