Migration of harmful elements in municipal sludge under hightemperature oxidation conditions
作者机构：State Key Laboratory of Advanced Steel Processes and ProductsCentral Iron and Steel Research Institute Co.Ltd.Beijing 100081China Department of Science and Technology DevelopmentChina Iron and Steel Research Institute Group Co.Ltd.Beijing 100081China Production and Equipment DepartmentChengde Jianlong Special Steel Co.Ltd.Chengde 067200HebeiChina Technology DepartmentChengde Jianlong Special Steel Co.Ltd.Chengde 067200HebeiChina
出 版 物：《Journal of Iron and Steel Research International》 (国际钢铁研究杂志)
年 卷 期：2023年第30卷第9期
页 面：1701-1713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]
主 题：Municipal sludge Oxidizing atmosphere Mini-sintering Reforming process Element migration
摘 要：Municipal sludge is produced in large amounts and is difficult to *** is the most direct and thorough treatment *** order to study the feasibility of sintering for municipal sludge treatment,the municipal sludge reforming process was studied under high-temperature oxidation *** results showed that the sludge reforming process could be divided into four stages:the precipitation and evaporation of adsorbed water,the precipitation and combustion of the volatile,the combustion of the residual volatile and solid carbon,and the decomposition of salts and the melting of *** increase in the heating rate resulted in more intense sludge combustion and improved the sludge reaction capacity and combustion *** burning at 1300℃,Si,Ca,Mg,Al,K,Na,and Cu formed new phases and entered the slag.75%of P remained in the slag.80%of the S formed SO_(2) and entered the flue *** formed gaseous chlorides like HCl upon combustion and entered the flue *** sintering is a feasible method for treating municipal sludge,care must be taken to limit the amount of P that ends up in the ore.
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