四川环境2017，Vol.36Issue(5)：19-23,5.
工业建筑废物中含锌铅烟尘的风力分选及其碱介质浸出与脱氯技术研究
Research on Wind Classification and Separation of Zinc and Lead from Industrial Construction Waste and their Alkaline Leaching and Dechlorination Technology
摘要
Abstract
Zinc and lead containing waste are often mixed with industrial construction wastes in many factories,and generated large quantities of hazardous waste abundant in heavy metals.This paper performed wind classification process with a venturi throat to separate flue dust from the industrial construction wastes.The Zinc content increased by 10％ ～ 20 ％ in the sample,however,there is still 5％ ～ 15 ％ silicon in the sample.Alkaline leaching was performed on the sample using NaOH,and results showed that the dissolution rate of zinc decreased to 45 ％ ～65 ％,which was much lower than the original material.Subsequently,established a combined dechloriation process,dust with high chloride were heated for 3 minutes by 500W microwave radiation,followed by water washing dechloriation process,85％ Cl can be removed.The optimum parameters for washing step were 10∶1 L/S ratio,temperature at 50 ℃,40 min,150 W ultrasound power.关键词
工业建筑废物/锌铅危险废物/碱介质浸取/风力分选Key words
Industrial construction wastes/zinc and lead hazardous waste/alkaline leaching/wind classification分类
资源环境引用本文复制引用
赵由才,曹伟华,王琦,戴世金,李强,陈善平,钱春军,徐勤,史昕龙,黄仁华,周海燕,张美兰..工业建筑废物中含锌铅烟尘的风力分选及其碱介质浸出与脱氯技术研究[J].四川环境,2017,36(5):19-23,5.基金项目
建筑废物处置和资源化污染控制技术研究,2013年环保部公益性科研专项项目(201309025) （201309025）
污染控制与资源化研究国家重点实验室自主课题资助(PCRRK14001) （PCRRK14001）
污泥热干化特性及污染控制技术研究,上海市科学技术委员会科研计划课题(14DZ1208404). （14DZ1208404）
