环境工程学报2017，Vol.11Issue(5)：3091-3098,8.DOI:10.12030/j.cjee.201512185
基于氨氮抑制效应的污泥厌氧产酸
Sludge anaerobic acidification based on ammonia-nitrogen inhibition
摘要
Abstract
Preprocess the high-solid sludge by microwave-acid method,then the ammonia nitrogen of corresponding concentration was removed by struvite precipitation method,the effect of ammonia concentration on anaerobic digestion via sludge was indicated in this study.This study investigated that can meet the needs of anaerobic fermentation microbial growth when ammonia nitrogen concentration exceeding 500 mg · L-1.Struvite precipitation method can achieve the purpose of improving VFAs production,the TVFAs was up to 6 521.95 mg · L-1.In the IC50 ammonia inhibition state,NH4+-N has different inhibition action on anaerobic microbial,especially propionate-degrading bacteria and isobutyrate-degrading bacteria.With rise in NH4+-N concentration,not only homoacetogens and syntrophic acetogens were suppressed,but also the homoacetogens/syntrophic acetogens synergism was damaged in varying degrees.关键词
高含固污泥/氨氮抑制效应/鸟粪石法/产氢产乙酸菌/同型产乙酸菌Key words
high-solid sludge/ammonia-nitrogen inhibition/struvite precipitation method/syntrophic acetogens/homoacetogens分类
资源环境引用本文复制引用
王晋,李习伟,方新磊,徐冉,李定龙..基于氨氮抑制效应的污泥厌氧产酸[J].环境工程学报,2017,11(5):3091-3098,8.基金项目
江苏省产学研联合创新前瞻性研究项目(BY2014037-25) （BY2014037-25）
