投加铁粉对长泥龄污泥高温厌氧消化的影响  

Effects of Adding Iron Powder on Thermophilic Anaerobic Digestion of Sludge with Long Sludge Retention Time

作　　者：寇晓梅[1] 王琳平 彭俊 吴世璋 邵甜 王怡[2] KOU Xiao-mei;WANG Lin-ping;PENG Jun;WU Shi-zhang;SHAO Tian;WANG Yi(PowerChina Northwest Engineering Co.Ltd.,Xi’an 710065,China;School of Environmental and Municipal Engineering,Xi’an University of Architecture and Technology,Xi’an 710055,China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,陕西西安710065 [2]西安建筑科技大学环境与市政工程学院,陕西西安710055

出　　处：《中国给水排水》2024年第5期87-92,共6页China Water & Wastewater

基　　金：西安市科技局社会发展科技创新示范项目(20SFSF0011)。

摘　　要：探讨了投加还原性铁粉对长泥龄污泥高温[(52±1)℃]厌氧消化的影响。结果表明,投加适量的铁粉对污泥高温厌氧消化有促进作用,可降低挥发性脂肪酸(VFAs)的积累、提高最大产甲烷潜能和沼气中甲烷的含量、降低生物营养物去除(BNR)工艺污泥消化液中磷酸盐浓度。当铁粉投加量为10 g/L时,最高累积甲烷产量为258.80 L/kgVS,沼气中甲烷含量为74%,同时可降低消化液中58.33%的磷酸盐。The effects of adding iron powder on thermophilic[(52±1)℃]anaerobic digestion(TAD)of sludge with long sludge retention time(SRT)was investigated.An appropriate dosage of iron powder could promote the TAD of sludge with long SRT,reduce the accumulation of volatile fatty acids(VFAs),increase the maximum methanogenic potential,boost the methane content in biogas,and reduce the phosphate concentration in the digestate entering into the biological nitrogen removal(BNR)process.When the dosage of iron powder was 10 g/L,the maximum cumulative methane production was 258.80 L/kgVS,the methane content in biogas was 74%,and the phosphate in the digestate was reduced by 58.33%.

关 键 词：高温厌氧消化 长泥龄污泥 铁粉 最大产甲烷潜能 

分 类 号：TU992[建筑科学—市政工程]