EFFECT OF AIR-FLOW RATE ON BIO-DRYING OF ORGANIC WASTE

XIANG Hong-lin; JIANG Jian-guo; GAO Yu-chen; MENG Yuan; XU Yi-wen; AIKELAIMU Aihemaiti; JU Tong-yao; HAN Si-yu; GUO Yan-ran

doi:10.13205/j.hjgc.202002017

Volume 38 Issue 2

Feb. 2020

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2020 > 38(2): 128-134

XIANG Hong-lin, JIANG Jian-guo, GAO Yu-chen, MENG Yuan, XU Yi-wen, AIKELAIMU Aihemaiti, JU Tong-yao, HAN Si-yu, GUO Yan-ran. EFFECT OF AIR-FLOW RATE ON BIO-DRYING OF ORGANIC WASTE[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(2): 128-134. doi: 10.13205/j.hjgc.202002017

Citation:

XIANG Hong-lin, JIANG Jian-guo, GAO Yu-chen, MENG Yuan, XU Yi-wen, AIKELAIMU Aihemaiti, JU Tong-yao, HAN Si-yu, GUO Yan-ran. EFFECT OF AIR-FLOW RATE ON BIO-DRYING OF ORGANIC WASTE[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(2): 128-134. doi: 10.13205/j.hjgc.202002017

Citation:

XIANG Hong-lin, JIANG Jian-guo, GAO Yu-chen, MENG Yuan, XU Yi-wen, AIKELAIMU Aihemaiti, JU Tong-yao, HAN Si-yu, GUO Yan-ran. EFFECT OF AIR-FLOW RATE ON BIO-DRYING OF ORGANIC WASTE[J]. ENVIRONMENTAL ENGINEERING , 2020, 38(2): 128-134. doi: 10.13205/j.hjgc.202002017

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EFFECT OF AIR-FLOW RATE ON BIO-DRYING OF ORGANIC WASTE

doi: 10.13205/j.hjgc.202002017

School of Environment, Tsinghua University, Beijing 100084, China

Received Date: 2019-07-15

Abstract

Abstract

The effect of air-flow rate on bio-drying was studied in the bio-drying experiments on typical organic waste. The experiment set three gradients of air-flow rate using typical organic wastes, such as fruits and vegetables, kitchen waste and garden waste as the raw materials. The comparison of temperature, moisture contents (MC) and volatile solid (VS) showed that the air-flow rate would significantly affect the bio-drying index air efficiencies and lower heating value (LHV). On the condition of lower air-flow rate, the reactor temperature rose rapidly and the air efficiency would be higher, but had poor ability to carry water vapor, which was difficult to effectively remove the moisture content; under the condition of higher air-flow rate, it was hard for the reactor to maintain higher temperature with more heat loss, but got the lowest final moisture content. At an air-flow rate of 48 L/(kg·h), the final moisture content could be reduced to 13.97%,and the bio-drying index was 2.34. The final LHV was found as high as 13932 kJ/kg, increased by 322% compared with initial one, which met the requirement of refuse derived fuel(RDF) production and improved the bio-drying effect at a lower energy consumption.
- organic waste,
- bio-drying,
- air-flow rate,
- lower heating value

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References(39)

References

中华人民共和国住房和城乡建设部. 中国城乡建设统计年鉴[G]. 2017.

张军文, 沈建. 城市果蔬垃圾处理现状及再利用对策[J]. 安徽农业科学, 2017, 45(36):41-43.

MOHAMMED M, OZBAY I, DURMUSOGLU E. Bio-drying of green waste with high moisture content[J]. Process Safety and Environmental Protection, 2017, 111:420-427.

HE P J, 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.

YUAN J, ZHANG D F, LI Y, et al. Effects of adding bulking agents on biostabilization and drying of municipal solid waste[J]. Waste Management, 2017, 62:52-60.

ZHOU H B, CHEN T B, GAO D, et al. Simulation of water removal process and optimization of aeration strategy in sewage sludge composting[J]. Bioresource Technology, 2014, 171:452-460.

赵进. 城市生活垃圾生物干化工艺优化设计研究[D]. 武汉:武汉理工大学, 2015.

余旺, 黄绍松, 孙水裕, 等. 接种菌剂和外加能源对污泥生物干化效果的影响[J]. 环境污染与防治, 2012, 34(8):39-43.

MOHAMMED M, DONKOR A, OZBAY I. Bio-drying of biodegradable waste for use as solid fuel:a sustainable approach for green waste management[J]. Agricultural Waste and Residues, 2018.

ZHANG D F, LUO W H, YUAN J, et al. Co-biodrying of sewage sludge and organic fraction of municipal solid waste:role of mixing proportions[J]. Waste Management, 2018, 77:333-340.

LIU H T, WANG Y W, LIU X J, et al. Reduction in greenhouse gas emissions from sludge biodrying instead of heat drying combined with mono-incineration in China[J]. Journal of the Air & Waste Management Association, 2017, 67(2):212-218.

TOM A P, PAWELS R, HARIDAS A. Biodrying process:a sustainable technology for treatment of municipal solid waste with high moisture content[J]. Waste Management, 2016, 49:64-72.

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.

YUAN J, ZHANG D F, LI Y, et al. Effects of the aeration pattern, aeration rate, and turning frequency on municipal solid waste biodrying performance[J]. Journal of Environmental Management, 2018, 218:416-424.

SONG X, MA J, GAO J D, et al. Optimization of bio-drying of kitchen waste:inoculation, initial moisture content and bulking agents[J]. Journal of Material Cycles and Waste Management, 2017, 19(1):496-504.

YANG B Q, HAO Z D, JAHNG D. Advances in biodrying technologies for converting organic wastes into solid fuel[J]. Drying Technology, 2017, 35(16):1950-1969.

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.

李春萍, 蔡先明, 秦侠, 等. 通风、翻堆和添加剂对垃圾生物干化和臭气排放的影响[J]. 环境工程, 2014, 32(3):83-86.

YU D W, YANG M, QI L, et al. Effects of aeration on matrix temperature by infrared thermal imager and computational fluid dynamics during sludge bio-drying[J]. Water Research, 2017, 122:317-328.

COLOMER-MENDOZA E J, HERRERA-PRATS L, ROBES-MARTINEZ F, et al. Effect of airflow on biodrying of gardening wastes in reactors[J]. Journal of Environmental Sciences, 2013, 25(5):865-872.

FREI K M, CAMERON D, STUART P R. Novel drying process using forced aeration through a porous biomass matrix[J]. Drying Technology, 2004, 22(5):1191-1215.

WU Z Y, CAI LU, KRAFFT THOMAS, et al. Biodrying performance and bacterial community structure under variable and constant aeration regimes during sewage sludge biodrying[J]. Drying Technology, 2017, 36(1):84-92.

ZHAO L, GU W M, SHAO L M, et al. Sludge bio-drying process at low ambient temperature:effect of bulking agent particle size and controlled temperature[J]. Drying Technology, 2012, 30(10):1037-1044.

MA J, ZHANG L, MU L, et al. Thermally assisted bio-drying of food waste:synergistic enhancement and energetic evaluation[J]. Waste Management, 2018, 80:327-338.

ZHANG D Q, HE P J, JIN T F, 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.

MA J, ZHANG L, LI A M. Energy-efficient co-biodrying of dewatered sludge and food waste:synergistic enhancement and variables investigation[J]. Waste Management, 2016, 56:411-422.

HUILINIR C, VILLEGAS M. Simultaneous effect of initial moisture content and airflow rate on biodrying of sewage sludge[J]. Water Research, 2015, 82:118-128.

VILLEGAS M, HUILINIR C. Biodrying of sewage sludge:kinetics of volatile solids degradation under different initial moisture contents and air-flow rates[J]. Bioresource Technology, 2014, 174:33-41.

SEN R, ANNACHHATRE A P. Effect of air flow rate and residence time on biodrying of cassava peel waste[J]. Internation Journal of Environmental Technology & Management, 2015, 18(1):9-29.

YANG B Q, ZHANG L, JAHNG D. Importance of initial moisture content and bulking agent for biodrying sewage sludge[J]. Drying Technology, 2014, 32(2):135-144.

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.

赵卫兵, 汪家权, 胡淑恒, 等. 城市垃圾生物干化最佳工艺参数的优化研究[J]. 环境工程, 2015, 33(8):97-100.

SUGNI M, CALCATERRA E, ADANI F. Biostabilization-biodrying of municipal solid waste by inverting air-flow[J]. Bioresource Technology, 2005, 96(12):1331-1337.

ZHAO S Q, HUANG W X, YIN R, et al. The effect of bio-drying pretreatment on heating values of municipal solid waste[J]. Advanced Materials Research, 2014, 1010-1012:537-546.

SHAO L M, HE X, YANG N, et al. Biodrying of municipal solid waste under different ventilation modes:drying efficiency and aqueous pollution[J]. Waste Management & Research, 2012, 30(12):1272-1280.

何品晶, 邵立明. 固体废物管理[M]. 北京:高等教育出版社, 2004.

SLEZAK R, KRZYSTEK L, LEDAKOWICZ S. Biological drying of municipal solid waste from landfill[J]. Drying Technology, 2019, 15:189-199.

李玉龙, 蔡文倍, 李登新. 碳氮比对垃圾干化及能源化利用的影响[J]. 环境工程学报, 2017, 11(6):3773-3779.

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.

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