硫自养反硝化深度脱氮中试研究  

Sulfur-based Autotrophic Denitrification Process for Advanced Nitrogen Removal

作　　者：任争鸣 刘雪洁[2] 苏晓磊[2] 李激[1] 陈亚松 张超 梁鹏[2] 黄霞[2] 

机构地区：[1]江南大学环境与土木工程学院,江苏无锡214100 [2]清华大学环境学院环境模拟与污染控制国家重点联合实验室,北京100084 [3]宜兴市建邦环境投资有限责任公司,江苏宜兴212400

出　　处：《中国给水排水》2016年第19期31-35,共5页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2014ZX07305001)

摘　　要：利用硫自养反硝化技术实现城市污水厂二级出水深度脱氮。在构建中试硫填充床的基础上,优化系统运行参数,考察该系统对城市污水厂二级出水的深度脱氮效果,并核算运行成本。结果表明,硫填充床能够有效去除二级出水中的NO_3^--N,HRT高于0.24 h时,NO_3^--N去除率达90%以上;当HRT为0.21 h、进水NO_3^--N为12 mg/L时,NO_3^--N去除率达80%,装置日处理量最高达336 m^3,最大脱氮负荷达到1 158 mg/(L·d);通过反冲可以实现系统的稳定运行,反冲后1 h内即可恢复正常处理性能;系统运行成本较传统反硝化低,费用为0.11元/m^3。The sulfur-based autotrophic denitrification process was used for advanced nitrogen removal from secondary effluent of wastewater treatment plant. Based on the building of a pilot-scale sulfur packed bed reactor, the operation parameters of the reactor was optimized, the reactor efficiency in advanced nitrogen removal from secondary effluent of wastewater treatment plant was investigated, and the operation cost was estimated. The results showed that the sulfur packed bed reactor could effectively remove NO3^ - N from the secondary effluent, and more than 90% of NO3^- - N could be removed when the hydraulic retention time （HRT） was higher than 0.24 h. When HRT was 0. 21 h, and the influent concentration of NO3^- - N was about 12 mg/L, the removal rate of NO3^ - N could reach 80%. The reactor had the maximum daily capacity of 336 m^3 and the maximum nitrogen removal load of 1 158 mg/（ L ·d）. The pilot-scale reactor could be recovered backwash. The operation cost of the reactor was al denitrification reactor. to its normal treatment performance within an hour after 0. 11 yuan/m^3 which was lower than that of the traditional denitrification reactor.

关 键 词：硫自养反硝化 深度脱氮 中试 

分 类 号：X703[环境科学与工程—环境工程]