Abstract:A laboratory study was carried out to obtain data on the influence of external carbon source on biostabilization-biodrying of kitchen waste. Two different external carbon sources (cornstalks and wood peat) were used to bio-dried with kitchen waste. A control treatment was studied using kitchen waste without a external carbon source. The two treatments with external carbon sources reduced the time taken to reach the high temperature, the highest temperature of three treatments could reach above 70℃. After 21d bio-drying, the moisture content decreased 15.25%, 28.0% and 20.3% for the control, adding cornstalks and wood peat treatments, respectively. The organic matter degraded 26.8%, 19.3% and 15.1%, respectively. The moisture content significantly positively correlated with organic matter content. No leachate was produced in the adding cornstalks treatment, whereas leachate was produced at a rate of 0.16 and 0.04kg/kg in the control and adding wood peat treatments, respectively. The water removal per initial raw waste was 0.40, 0.54 and 0.42kg/kg for the control, adding cornstalks and wood peat treatment, respectively. The water loss significantly positively correlated with temperature. The initial low calorific value of kitchen waste was 266kJ/kg, after 21d bio-drying, the moisture content decreased, the low calorific value increased to 1331kJ/kg. The treatments of adding cornstalks and woody peat showed the higher low calorific value, the final low calorific value of bio-drying product were 8400 and 6331kJ/kg.
袁京, 张地方, 李赟, 李国学, 李煜, 王国英. 外加碳源添加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 Jing, ZHANG Di-fang, LI Yun, LI Guo-xue, LI Yu, WANG Guo-ying. Effect of external carbon sources on biodrying of kitchen waste. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(2): 628-635.
Velis C A, Longhurst P J, Drew G H, et al. Biodrying for mechanical-biological treatment of wastes:A review of process science and engineering[J]. Bioresource Technology, 2009, 100(11):2747-2761.
[6]
Sugni M, Calcaterra E, Adani F. Biostabilization-biodrying of municipal solid waste by inverting air-flow[J]. Bioresource Technology, 2005,96(12):1331-1337.
[7]
Adani F, Baido D, Calcaterra E, et al. The influence of biomass temperature on biostabilization-biodrying of municipal solid waste[J]. Bioresource Technology, 2002,83(3):173-179.
[8]
Tambone F, Scaglia B, Scotti S, et al. Effects of biodrying process on municipal solid waste properties[J]. Bioresource technology, 2011,102(16):7443-7450.
Adani F, Baido D, Calcaterra E, et al. The influence of biomass temperature on biostabilization-biodrying of municipal solid waste[J]. Bioresource Technology, 2002,83(3):173-179.
[11]
Garg A, Smith R, Hill D, et al. Wastes as co-fuels:the policy framework for solid recovered fuel (SRF) in Europe, with UK implications[J]. Environmental Science & Technology, 2007, 41(14):4868-4874.
He P, Tang J, Zhang D, et al. Release of volatile organic compounds during bio-drying of municipal solid waste[J]. Journal of Environmental Sciences, 2010,22(5):752-759.
[17]
He P, Zhao L, Zheng W, et al. Energy Balance of a Biodrying Process for Organic Wastes of High Moisture Content:A Review[J]. Drying Technology, 2013,31(2):132-145.
[18]
Zhang D, Zhang H, Wu C, et al. Evolution of heavy metals in municipal solid waste during bio-drying and implications of their subsequent transfer during combustion[J]. Waste Management, 2011,31(8):1790-1796.
[19]
Zhang D, He P, Jin T, et al. Bio-drying of municipal solid waste with high water content by aeration procedures regulation and inoculation[J]. Bioresource Technology, 2008,99(18):8796-8802.
Yuan J, Yang Q, Zhang Z, et al. Use of additive and pretreatment to control odors in municipal kitchen waste during aerobic composting[J]. Journal of Environmental Sciences, 2015,37:83-90.