摘要
针对近年来水体中氮磷元素不断增多、水体富营养化现象日益严重的问题,采用4级三相式分段进水与生物流化床相结合的工艺,旨在能够有效的缓解这一问题,研究了影响脱氮效能的因素。结果表明,该工艺的优化反应条件为:进水分流体积比1.48、容积比2:3、HRT8h,DO的质量浓度1.5-2.0mg/L。4级三相式分段进水生物流化床具有良好的脱氮效能,可为实际工程的新建和改造提供理论基础。
In recent years, nitrogen and phosphorus in water for growing, phenomenon of eutrophication growing, so three-phase biological fluidized bed with four step-feed process can effectively alleviate the problem. The factors which affected the nitrogen removal were investigated. The result indicated that the optimal conditions were: the water diversion ratio was 1.48, the volume ratio was 2:3, the HRT was 8 h, and DO concentration of 1.5-2.0 mg/L. The three-phase biological fluidized bed with four step-feed process displayed a good efficiency on nitrogen removal, which had provided the theoretical foundation for engineering construction and rebuilding.
出处
《水处理技术》
CAS
CSCD
北大核心
2016年第8期120-123,共4页
Technology of Water Treatment
基金
沈阳市科委科研项目(F15-199-1-17)
国家自然科学基金(51508343)
关键词
生物流化床
脱氮效能
影响因素
分段进水
biological fluidized bed
denitriflcation efficiency
affecting factors
segmented water