1. College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China; 2. Shanghai Environmental Sanitation Engineering Design Institute Co., Ltd, Shanghai 200323, China
Abstract：The fermentation liquid of kitchen waste was used to adjust the ratio of carbon and nitrogen (C/N) in the denitrification system with facultative condition. Results showed that there was no accumulation of organic matter in the system, while the maximum accumulation concentration and efficiency of nitrite under high C/N conditions were higher than those of low C/N conditions. With the increase of C/N, the nitrogen removal rate and denitrification rate continued to increase. When C/N was 13, the denitrification rate achieved the maximum of 9.79mg/(gVSS·h), and the denitrification rate exceeded 95%. Besides, the denitrification rate and the maximum accumulation concentration of nitrite were directly proportional to influent nitrate concentration under the same C/N conditions. For facultative system, the removal of unit nitrogen required more organics, and the denitrification and nitrite reduction rate were lower than that of anaerobic system, although there was no COD residual occurring in the denitrification process.
袁京,张地方,李赟,等.外加碳源对厨余垃圾生物干化效果的影响[J]. 中国环境科学, 2017,37(2):628-635. Yuan J, Zhang D F, Li Y, et al. Effect of external carbon sources on biodrying of kitchen waste[J]. China Environmental Science, 2017, 37(2):628-635.
[2]
张波,史红钻,张丽丽,等.pH对厨余废物两相厌氧消化中水解和酸化过程的影响[J]. 环境科学学报, 2005,25(5):665-669. Zhang B, Shi H Z, Zhang L L, et al. The influence of pH on hydrolysis and acidogenesis of kitchen wastes in two-phase anaerobic digestion[J]. Acta Scientiae Circumstantiae, 2005,25(5):665-669.
[3]
蒋建国,王岩,隋继超,等.厨余垃圾高固体厌氧消化处理中氨氮浓度变化及其影响[J]. 中国环境科学, 2007,27(6):721-726. Jiang J G, Wang Y, Sui J C, et al. Variations of the ammonia concentration of high solid anaerobic digestion technology for organic waste[J]. China Environmental Science, 2007,27(6):721-726.
[4]
唐嘉陵,王晓昌,夏四清.厨余发酵液作为中试A/O-MBR外增碳源的脱氮特性[J]. 中国环境科学, 2015,35(10):3018-3025. Tang J L, Wang X C, Xia S Q. Characteristics of nitrogen removal in a pilot-scale A/O-MBR with Fermentation Liquid of Food Waste (FLFW) as external carbon sources[J]. China Environmental Science, 2015,35(10):3018-3025.
[5]
Fu Z, Yang F, Zhou F, et al. Control of COD/N ratio for nutrient removal in a modified membrane bioreactor (MBR) treating high strength wastewater[J]. Bioresource Technology, 2009,99(1):136-141.
[6]
Park S, Seon J, Byun I, et al. Comparison of nitrogen removal and microbial distribution in wastewater treatment process under different electron donor conditions[J]. Bioresource Technology, 2010,101(9):2988-2995.
[7]
Zheng X, Zhang S, Huang D, et al. A pilot-scale deep bed denitrification filter for secondary effluent treatment using sodium acetate as external carbon[J]. Water Environment Research, 2019, 91(6):491-499.
[8]
Liu F, Tian Y, Ding Y, et al. The use of fermentation liquid of wastewater primary sedimentation sludge as supplemental carbon source for denitrification based on enhanced anaerobic fermentation[J]. Bioresource Technology, 2016,219:6-13.
[9]
Jiang J, Zhang Y, Li K, et al. Volatile fatty acids production from food waste:Effects of pH, temperature, and organic loading rate[J]. Bioresource Technology, 2013,143:525-530.
[10]
Yan, F, Jiang J, Zhang H, et al. Biological denitrification from mature landfill leachate using a food-waste-derived carbon source[J]. Journal of Environmental Management, 2018,214:184-191.
[11]
Zhang H, Jiang J, Li M, et al. Biological nitrate removal using a food waste-derived carbon source in synthetic wastewater and real sewage[J]. Journal of Environmental Management, 2016,166:407-413.
[12]
Zhang Y, Wang X, Cheng Z, et al. Effect of fermentation liquid from food waste as a carbon source for enhancing denitrification in wastewater treatment[J]. Chemosphere, 2016,144(2):689-696.
[13]
Ahmed Z, Lim B R, Cho J, et al. Biological nitrogen and phosphorus removal and changes in microbial community structure in a membrane bioreactor:Effect of different carbon sources[J]. Water Research, 2008,42(1/2):198-210.
[14]
刘国华,刘禹琛,陈燕,等.低DO对活性污泥系统碳和氮去除影响的研究[J]. 中国环境科学, 2020,40(6):2503-2512. Liu G H, Lu Y C, Chen Y, et al. Effects of low dissolved oxygen on carbon and nitrogen removal in activated sludge process[J]. China Environmental Science, 2020,40(6):2503-2512.
[15]
高春娣,武联菊,郝坤,等.低溶解氧污泥微膨胀的发生及脱氮除磷效果优化[J]. 环境科学, 2010,31(10):2385-2389. Gao C D, Wu L J, Hao K, et al. Induction of low dissolved oxygen limited filamentous bulking and optimization of nitrogen and phosphorus removal[J]. Environmental Science, 2010,31(10):2385-2389.
[16]
易成豪,秦伟,陈湛,等.聚己内酯与聚羟基丁酸戊酸酯的脱氮性能对比[J]. 环境科学, 2019,40(9):4143-4151. Yi C H, Qin W, Chen Z, et al. Comparison of polycaprolactone and poly-3-hydroxybutyrate-co-3-hydroxyvalerate for nitrogen removal[J]. Environmental Science, 2019,40(9):4143-4151.
[17]
国家环境保护局.水和废水监测分析方法[M]. 4版.北京:中国环境科学出版社, 2006. State Environmental Protection Administration of China. Water and waste water monitoring and analysis method (Fourth Edition)[M]. Beijing:China Environmental Science Press, 2006.
[18]
Kujawa K, Klapwijk B. A method to estimate denitrification potential for predenitrification systems using NUR batch test[J]. Water Research, 1999,33(10):2291-2300.
[19]
张永梅,王晓昌,程喆,等.厨余垃圾短程发酵产物的性质及其反硝化性能[J]. 环境工程学报, 2017,11(5):3017-3023. Zhang Y M, Wang X C, Cheng Z, et al. Characteristics of free fermentation products from food wastes and its denitrification performance[J]. Chinese Journal of Environmental Engineering, 2017, 11(5):3017-3023.
[20]
Guellil A, Thomas F, Block J C, et al. Transfer of organic matter between wastewater and activated sludge flocs[J]. Water Research, 2001,35(1):143-150.
[21]
程喆,王晓昌,张永梅,等.厨余发酵液作为反硝化碳源的规律研究[J]. 环境工程学报, 2015,9(2):719-724. Cheng Z, Wang X C, Zhang Y M, et al. Fermentation liquid of food waste as carbon source for denitrification[J]. Chinese Journal of Environmental Engineering, 2015,9(2):719-724.
[22]
郑冰冰,吴怡伟,李云辉,等.不同碳氮比对海水养殖废水脱氮效果的影响[J]. 环境科学研究, 2020,33(8):1848-1856. Zheng B B, Wu Y W, Li Y H, et al. Effect of different C/N ratio on nitrogen removal of mariculture wastewater[J]. Research of Environmental Sciences, 2020,33(8):1848-1856.
[23]
马勇,彭永臻,王淑莹.不同外碳源对污泥反硝化特性的影响[J]. 北京工业大学学报, 2009,35(6):820-824. Ma Y, Peng Y Z, Wang S Y. Sludge denitrification characteristics with different external carbon source[J]. Journal of Beijing University of Technology, 2009,35(6):820-824.
[24]
Soto O, Aspe E, Roeckel M. Kinetics of cross-inhibited denitrification of a high load wastewater[J]. Enzyme & Microbial Technology, 2007,40(6):1627-1634.
[25]
Sun H, Yang Q, Peng Y, et al. Nitrite Accumulation during the Denitrification Process in SBR for the Treatment of Pre-treated Landfill Leachate[J]. Chinese Journal of Chemical Engineering, 2009, 17(6):1027-1031.
[26]
Wang H, Li J, Wang B, et al. Deciphering pollutants removal mechanisms and genetic responses to ampicillin stress in simultaneous heterotrophic nitrification and aerobic denitrification (SHNAD) process treating seawater-based wastewater[J]. Bioresource Technology, 2020,315.
[27]
李亚坤,王晓昌,唐嘉陵.混合态厨余发酵液作为外碳源强化脱氮的特性[J]. 中国给水排水, 2017,33(5):16-21. Li Y K, Wang X C, Tang J L. Characteristics of enhanced nitrogen removal with mixed fermentation liquid of food waste as external carbon sources[J]. China Water & Wastewater, 2017,33(5):16-21.
[28]
唐嘉陵,王晓昌,蒲云辉,等.餐厨垃圾酸性发酵及其产物为碳源的脱氮特性[J]. 中国环境科学, 2017,37(4):1426-1433. Tang J L, Wang X C, Pu Y H, et al. Characteristics of food waste acidogenic fermentation and its products as external carbon sources for nitrogen removal[J]. China Environmental Science, 2017,37(4):1426-1433.
