循环流化自养反硝化塔用于养猪废水深度脱氮  

Advanced Nitrogen Removal from Swine Wastewater Using Circulating Fluidized Autotrophic Denitrification Tower

作　　者：杨雪 王燕[1,2] 支尧 周政 李激 YANG Xue;WANG Yan;ZHI Yao;ZHOU Zheng;LI Ji(School of Environment and Civil Engineering,Jiangnan University,Wuxi 214000,China;Wuxi Puhui Environmental Protection Technology Co.Ltd.,Wuxi 214122,China;Jiangsu Key Laboratory of Anaerobic Biotechnology,Wuxi 214122,China;Jiangsu Collaborative Abstract Innovation Center of Water Treatment Technology and Materials,Suzhou 215009,China)

机构地区：[1]江南大学环境与土木工程学院,江苏无锡214000 [2]无锡普汇环保科技有限公司,江苏无锡214122 [3]江苏省厌氧生物技术重点实验室,江苏无锡214122 [4]江苏省高校水处理技术与材料协同创新中心,江苏苏州215009

出　　处：《中国给水排水》2024年第10期132-136,共5页China Water & Wastewater

摘　　要：某生猪养殖厂污水处理站采用两级AO工艺处理养殖废水,出水总氮较高,需进行深度脱氮,因此在二沉池后设计嵌入循环流化自养脱氮塔,考察其脱氮效能。结果表明,循环流化自养脱氮塔稳定运行后冬季出水NO_(3)^(-)-N浓度稳定在5 mg/L以下,脱氮负荷达240 mgNO_(3)^(-)-N/(L·d),较传统异养反硝化可节省运行成本20~40万元/a。The total effluent nitrogen concentration in a swine wastewater treatment station with two-stage AO process was high,which required deep nitrogen removal.Therefore,the circulating fluidized autotrophic denitrification tower was designed after the secondary sedimentation tank and its advanced nitrogen removal efficacy was then evaluated.The results showed that the effluent NO_(3)^(-)-N concentration remained below 5 mg/L and the nitrogen loading rate reached 240 mgNO_(3)^(-)-N/(L·d) in winter after the stable operation of the circulating fluidized autotrophic denitrification tower,which could save the operation cost of 200 to 400 thousand yuan/a compared to the conventional heterotrophic denitrification process.

关 键 词：猪场废水 深度脱氮 硫自养反硝化 循环流化塔 

分 类 号：TU992[建筑科学—市政工程]