摘要
针对常规生物脱氮工艺硝化负荷低,氧气、碳源和碱度耗量大,亚硝化累积率难以稳定控制的问题,采用1种新型结构的悬浮生物滤池(SBF)工艺,对污水生物亚硝化脱氮与氨氮达标技术进行了实验。结果表明,在NH_(3)^(-)N容积负荷分别为0.6、0.3 kg/(m^(3)·d)的情况下,一级高负荷SBF出水NH_(3)^(-)N的质量浓度平均为198.5 mg/L,二级低负荷SBF出水NH3-N的质量浓度平均为16.5 mg/L,可达到GB 8978-1996的三级标准。一级NO2--N的质量浓度与NO_(2)^(-)-N和NO_(3)^(-)-N的质量浓度之和比为84.7%,实现了亚硝酸盐的累积,为实现短程硝化反硝化和厌氧氨氧化提供了条件。
Aiming at the problems of low nitrification load, high consumption of oxygen, carbon source and alkalinity, and difficulty in stably controlling the accumulation rate of nitrosation in conventional biological denitrification process, the experiment of nitrogen removal via nitrosation and reaching standard of ammonia nitrogen of wastewater was carried out by a novel suspended biological filter(SBF) process. The result showed that, when the volume load of NH_(3)^(-)N was 0.6 and 0.3 kg/(m^(3)·d) respectively, the average effluent NH_(3)^(-)N mass concentration of primary higher load SBF was 198.5 mg/L, the average effluent NH3-N mass concentration of secondary lower load SBF was 16.5 mg/L, it reached the class Ⅲ standard of GB 8978-1996. The ratio of the mass concentration of primary NO2--N to the sum of the mass concentrations of NO_(2)^(-)-N and NO_(3)^(-)-N was 84.7%, it realized nitrite accumulation and provided precondition for shortcut nitrification-denitrification and anaerobic ammonium oxidation.
作者
章一丹
谢娟
徐灏龙
白俊跃
徐佳佳
ZHANG Yidan;XIE Juan;XU Haolong;BAI Junyue;XU Jiajia(Environmental Science Research&Design Institute of Zhejiang Province,State Environmental Protection Engineer(Zhejiang)Center for Wastewater Pollution Control,310007;Tongji Vocational College of Science and Techology of Zhejiang Province,311231,Hangzhou,China)
出处
《水处理技术》
CAS
CSCD
北大核心
2021年第5期120-122,共3页
Technology of Water Treatment
基金
浙江省省属科研院所专项项目(2017F30028)
环境保护部环境规划院研究专题项目(2017A025)。
关键词
悬浮生物滤池
氨氮
亚硝化
脱氮
suspended biological filter
ammonia nitrogen
nitrosation
nitrogen removal
