液固流化床结晶造粒技术捕集水体中的重金属  

Liquid solid fluidized bed crystallization granulation technology for capturing heavy metals in water

作　　者：桂林涛 黄惠[1] 杨海涛[2,3] 胡超权 郭忠诚 吴聪聪[2] GUI Lintao;HUANG Hui;YANG Haitao;HU Chaoquan;GUO Zhongcheng;WU Congcong(Faculty of Metallurgical and Energy Engineering,Kunming University of Science and Technology,Kunming,650093,China;State Key Laboratory of Multiphase Complex Systems,Institute of Process Engineering,Chinese Academy of Sciences,Beijing,100190,China;School of Chemical Engineering,University of Chinese Academy of Sciences,Beijing,100049,China;Nanjing IPE Institute of Green Manufacturing Industry,Nanjing,211135,China)

机构地区：[1]昆明理工大学冶金与能源工程学院,昆明650093 [2]中国科学院过程工程研究所多相复杂系统国家重点实验室,北京100190 [3]中国科学院大学化学工程学院,北京100049 [4]中国科学院过程工程研究所南京绿色制造产业创新研究院,南京211135

出　　处：《环境化学》2022年第9期3042-3054,共13页Environmental Chemistry

基　　金：国家自然科学基金(22078328,51504231,52064028);云南省自然科学基金重点研究计划(2021FA026);复杂有色金属资源清洁利用国家重点实验室开放基金(CNMRCUKF1704);中国科学院过程工程研究所南京绿色制造产业创新研究院(E0010705)资助。

摘　　要：流化床结晶(FBC)造粒技术是一种强化诱导结晶的过程,可以同时实现水体净化和回收捕集水体中有价资源的目标.该技术具有传质速率高、不产生污泥、结晶颗粒含水率低、易于固液分离、绿色环保的优点.本文综述了技术的发展背景、工艺基础、工作原理,分析了进水浓度、沉淀药剂、载体、水力条件等因素对FBC处理重金属废水效果的影响.综述了国内外FBC造粒技术处理镍、铜、锌、铅、砷等单一废水和多金属混合废水的研究进展,应用研究表明该技术处理重金属废水是无害化、资源化的优良工艺.不仅解决重金属废水的排放问题,还将水体中的重金属转化为金属盐,可再利用于金属行业,对环境十分友好.最后指出了目前研究中存在的问题以及今后的研究方向和重点,对该技术的发展进行了展望.Fluidized bed crystallization(FBC) granulation technology refers to the process of enhanced induced crystallization, which can simultaneously achieve the goal of water purification and recovery of valuable resources in water. This technology have multiple advantages, namely, high mass transfer rate, no sludge, low moisture content of crystalline particles, easy solid-liquid separation and environmental protection. This work summarized the development background,process basis and working principle of the technology by analyzing the influence of influent concentration, precipitant, carrier, hydraulic conditions and other factors on the treatment of heavy metal wastewater by FBC. Moreover, the research progress and optimal process conditions of single wastewater and multi metal mixed wastewater treatment by FBC granulation technology at home and abroad have been summarized. Used in the metal industry and being very friendly to the environment, the application research reveals that this technology is harmless and resource-base,solving heavy metal wastewater discharge problems as well as converting the heavy metals in water into metal salts. Finally, the paper sheds light on the existing problems and future research directions and made it prospective argument on the development of the technology.

关 键 词：流化床 流态化 重金属 废水 结晶 

分 类 号：X703[环境科学与工程—环境工程]