Effects of adding bulking agents on the biodrying of kitchen waste and the odor emissions produced

作     者：Jing Yuan Yun Li Hongyu Zhang Difang Zhang David Chadwick Guoxue Li Guoying Wang Menghao Chi Fan Yang 

作者机构：Beijing Key Laboratory of Farmland Soil Pollution Prevention and RemediationCollege of Resources and Environmental ScienceChina Agricultural UniversityBeijing 100193China Beijing Building Materials Academy of Science Research/State Key Laboratory of Solid Waste Reuse for Building MaterialBeijing 100041China Bangor UniversityDeiniol Rd.BangorUnited Kingdom College of Resources and Environmental ScienceJilin Agricultural UniversityJilin 130118China Beijing Municipal Research Institute of Environmental ProtectionBeijing 100037China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2018年第30卷第5期

页      面：344-355页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 08[工学] 

基　　金：financially supported by the Ministry of Science and Technology of the People's Republic of Chinathrough the High Effective Intelligent Composting Process and Key Technology Research program(No.2016YFD0800601) the project of“State Key Laboratory of Solid Waste Reuse for Building Materials”(No.SWR-2014-005) 

主　　题：Biodrying Kitchen waste Bulking agent Water content Ammonia Volatile sulfur compounds (VSCs) 

摘      要：The effects of adding a bulking agent on the performance and odor emissions（ammonia and eight sulfur-containing odorous compounds） when biodrying kitchen waste were investigated. Three treatments were considered： the addition of either cornstalks（CS） or wood peat（WP） to kitchen waste as a bulking agent before biodrying, and a control treatment（CK）. The water-removal rates for CK, CS, and WP treatments were 0.35, 0.56, and0.43 kg/kg, respectively. Addition of bulking agents to kitchen waste produced less leachate,higher moisture-removal rates, and lower consumption of volatile solids. The CS treatment had the highest biodrying index（4.07）, and those for the WP and CK treatments were 3.67 and 1.97, respectively. Adding cornstalks or wood peat decreased NH3 emissions by 55.8%and 71.7%, respectively. Total sulfur losses were 3.6%–21.6% after 21 days biodrying, and H2 S and Me2 SS were the main（〉 95%） sulfur compounds released. The smallest amounts of sulfur-containing odorous compounds were emitted when cornstalks were added, and adding cornstalks and wood peat decreased total sulfur losses by 50.6%–64.8%.