Chemical and olfactive impacts of organic matters on odor emission patterns from the simulated construction and demolition waste landfills  

作　　者：Kunyu Jiang Zhaowen Cheng Ziyang Lou Luochun Wang Hailin Lu Bijun Xu Ningben Jin 

机构地区：[1]College of Environmental and Chemical Engineering,Shanghai Uniuersityof Electric Poiuer,Shanghai 200090,China [2]School of Environmental Science and Engineering,Shanghai Jiao Tong University,Shanghai 200240,China [3]Shanghai Engineering Research Center of Solid Waste Treatment and Resource Recovery,Shanghai 200092,China [4]Institute for Urban Governance,Shanghai Jiao Tong University,Shanghai 200240,China [5]Shanghai Environment Group co.,Ltd,Shanghai 200336,China [6]Shanghai Environmental Sanitation Engineering Design Institute Co.,Ltd,Shanghai 200001,China

出　　处：《Journal of Environmental Sciences》2021年第5期196-206,共11页环境科学学报（英文版）

基　　金：supported by the Project of Scientific Research Plan of Science and Technology Commission of Shanghai Municipality(No.17DZ1202404);the National Natural Science Foundation of China(No.51678357,U1662128);National Key Research and Development Program of China(No.2018YFC1900704)。

摘　　要：The explosive increase of construction and demolition waste(CDW) caused the insufficient source separation and emergency disposal at domestic waste landfills in many developing countries. Some organic fractions were introduced to the CDW landfill process and resulted in serious odor pollution. To comprehensively explore the impacts of organic matters on odor emission patterns, five CDW landfills(OIL), with organic matters/inert CDW components(O/I) from 5% to 30%, and the control group only with inert components(IL) or organics(OL) were simulated at the laboratory. The chemical and olfactive characters of odors were evaluated using the emission rate of 94 odorants content(ER_(total)), theory odor concentration(TOC_(total)), and e-nose concentration(ER_(ENC)), and their correlations with waste properties were also analyzed. It was found that the main contributors to ER_(total)(IL: 93.0% NH_(3);OIL: 41.6% sulfides, 31.0% NH_(3), 25.9% oxygenated compounds) and TOC_(total)(IL: 64.1% CH_3SH, 28.2% NH_(3);OIL: 71.7% CH_(3)SH, 24.8% H_(2)S) changed significantly. With the rise of O/I, ER_(total), TOC_(total), and ER_(ENC) increased by 10.9, 20.6, and 2.1 times, respectively. And the organics content in CDW should be less than 10%(i.e., DOC < 101.3 mg/L). The good regressions between waste properties(DOC, DN, pH) and ER_(total),( r = 0.86, 0.86,-0.88, p < 0.05), TOC_(total),( r = 0.82, 0.79, -0.82, p < 0.05) implied that the carbon sources and acidic substances relating to organics degradation might result in that increase. Besides, the correlation analysis results( ER_(ENC) vs. TOC_(total,, r = 0.96, p < 0.01;vs. ER_(ENC), r = 0.86, p < 0.05) indicated that e-nose perhaps was a reliable odor continuous monitoring tool for CDW landfills.

关 键 词：Construction and demolition waste LANDFILLS Emission rate Volatile odor compounds Organic matters Theory odor concentration 

分 类 号：X799[环境科学与工程—环境工程] X512