Characteristics of Central Heating Cinder and Its Influence on Soil Properties  

作　　者：Guoyu GAN Chao LI Xu ZHANG Li YANG Yunfeng CHEN Bo LIU Yanli LI Jifu LI 

机构地区：[1]College of Agriculture/Analytical&Testing Center of Agricultural Resources and Environment,Yangtze University,Jingzhou 434025,China [2]Jingzhou District Agricultural Science and Technology Service Center,Jingzhou 434025,China [3]Key Laboratory of Fertilization Utilization of Waste,Ministry of Agriculture and Rural Areas,Wuhan 430070,China

出　　处：《Meteorological and Environmental Research》2022年第2期78-82,97,共6页气象与环境研究（英文版）

基　　金：Supported by Open Fund Project of the Key Laboratory of Waste Fertilizer Utilization of the Ministry of Agriculture and Rural Areas (KLFAW201901)

摘　　要：[Objective]The research was designed to explore the effect of long-term stacking of solid waste produced in the coal-burning process of central heating enterprises on physical and chemical properties of soil.[Method]This study took the heating enterprises in Shenyang City as the research object.The morphological structure and element composition of coal cinder were determined by continuously collecting coal and cinder samples in different periods.At the same time,the original soil and cinder soil of the stacking site were collected to determine the changes of soil morphological structure,element composition and physical and chemical properties,so as to provide reference for the resource utilization of local cinder waste and the potential pollution risk of the stacking site.[Result]The contents of C,H,O,N,and S non-metallic elements in coal cinder decreased by 69.5%,71.2%,76.0%,74.5%,and 34.6%,respectively when compared with raw coal;while the content of Si increased significantly by 95.7%.The contents of Al,K,and Fe in cinder decreased by 4.3%,60.2%,and 33.3%,respectively,while the contents of Mg and Na increased by 36.1%and 130.9%,respectively.Compared with the original soil,the contents of C,H,and O in shallow cinder soil and deep cinder soil increased by 126.5%,67.9%,80.93%,and 21.3%,25.0%and 42.3%,respectively.The residual carbon existed in the form of activated carbon.The contents of Mg,Al,K,Na,Ca,and Fe in shallow cinder soil and deep cinder soil increased by 61.6%,5.4%,46.1%,35.8%,32.5%,6.3%and 22.3%,12.3%,12.2%,15.6%,5.8%and 2.8%,respectively compared with the original soil.The content of heavy metal elements in coal cinder did not reach the detection limit.Under the scanning electron microscope,the raw coal is mainly block structure,while the cinder is honeycombed and porous and dust.[Conclusion]Cinder stacking can significantly improve the content of organic matter and available K in shallow cinder soil,and improve the porosity and permeability of soil.In addition,cinder waste has high pH and pore struc

关 键 词：Central heating Coal cinder Soil properties Element composition Morphology and structure 

分 类 号：X705[环境科学与工程—环境工程] S15[农业科学—土壤学]