东南大学学报（自然科学版）2026，Vol.56Issue(8)：1176-1182,7.DOI:10.3969/j.issn.1001-0505.2026.08.009
厨余垃圾粉碎直排对反硝化过程氧化亚氮排放的影响研究
Study on effects of food waste crushing and direct discharge on nitrous oxide emissions during denitrification
摘要
Abstract
Food waste(FW)crushing and direct discharge is a sustainable treatment strategy,but its impact on emissions of the potent greenhouse gas,nitrous oxide(N2O),remains to be assessed.The influence mecha-nism of FW degradation products on N2O emissions during denitrification were explored by simulating the mu-nicipal wastewater under the scenario of FW crushing and direct discharge into sewer.The experimental re-sults show that FW degradation products inhibit the reduction rates of both nitrate and nitrite,with the decline of 23.3%and 19.0%,respectively,while increasing the N2O reduction rate by 9.8%.Under the condition of non-limiting carbon source,FW degradation products enhance the electron acquisition capacity of N2O reduc-tase(Nos),and intensify the electron competition among denitrification reductases,prompting more electrons to flow towards Nos.The alteration of the electron distribution pattern is the key mechanism of the improve-ment of N2O reduction capability by FW degradation products,which helps to reduce N2O accumulation during denitrification.关键词
氧化亚氮(N2O)/生物脱氮/厨余垃圾/粉碎直排/反硝化Key words
nitrous oxide(N2O)/biological nitrogen removal/food waste/crushing and direct discharge/de-nitrification分类
资源环境引用本文复制引用
刘轶文,李权,王晗炜,张树军,何衍英,王玉芬,朱婷婷..厨余垃圾粉碎直排对反硝化过程氧化亚氮排放的影响研究[J].东南大学学报（自然科学版）,2026,56(8):1176-1182,7.基金项目
国家自然科学基金资助项目(52470108) （52470108）
国家重点研发计划资助项目(2024YFC3810200). （2024YFC3810200）
