浙江农业学报2026，Vol.38Issue(7)：1410-1419,10.DOI:10.3969/j.issn.1004-1524.20250326
基于生物滴滤氨氮硝化的猪场沼液控氨固氮运行参数优化
Optimization of operation parameters of ammonia nitrogen fixation in swine farm biogas slurry based on ammonia nitrogen nitrification by bio-trickling filter
摘要
Abstract
To address the nitrogen loss caused by ammonia volatilization during the storage and land application of biogas slurry from swine farm,a bio-trickling filter reactor equipped with micro-foam packing was designed in this study.Sequential batch single-factor experiments were conducted to investigate the effects of key parameters,inclu-ding circulating water flow,packing height,and influent ammonia nitrogen(NH4+-N)concentration,on the ammo-nia nitrogen nitrification efficiency of biogas slurry.The results indicated that under ambient temperature conditions,the reactor exhibited excellent nitrification performance when the circulating water flow was 2.0-3.0 L·min-1,the packing height was 90 cm,and the influent NH4+-N concentration ranged from 80 to 100 mg·L-1.The maximum 24 h NH4+-N conversion rate reached 86.6%,the total nitrogen(TN)loss rate was 6.5%-13.8%,and the ratio of nitrate nitrogen(NO3--N)production to NH4+-N conversion[Δ(NO3--N)/Δ(NH4+-N)]in effluent was as high as 0.90 or above.Microbial community analysis of the reaction processes with different influent NH4+-N concentra-tions revealed that the dominant bacterial phylum in the packing biofilm was Proteobacteria,with a relative abun-dance exceeding 85%.This phylum showed higher relative abundance when the influent NH4+-N concentration was 125-150 mg·L-1,indicating its major role in the nitrification process.However,excessively high influent NH4+-N concentrations exerted inhibitory effect on the dominant bacterial communities in the biofilm.关键词
生物滴滤/氨氮硝化/猪场/沼液/参数优化Key words
bio-trickling filter/ammonia nitrogen nitrification/swine farm/biogas slurry/parameter optimization分类
资源环境引用本文复制引用
王振旗,杨静仁,周雪飞,倪远之,胡双庆,苗文亮..基于生物滴滤氨氮硝化的猪场沼液控氨固氮运行参数优化[J].浙江农业学报,2026,38(7):1410-1419,10.基金项目
上海市农业科技创新项目(沪农科A2025006) （沪农科A2025006）
国家自然科学基金青年科学基金(52200104) （52200104）
