鸟粪石负载硅藻土复合材料对土壤中锌的稳定化作用  

Stabilization effects of Zn in soil with struvite loaded diatomite composite

作　　者：王健 夏鹏[1,2] 张志昊 王学江[1] 赵建夫[1] WANG Jian1,XIA Peng1,2,ZHANG Zhihao1,WANG Xuejiang1,ZHAO Jianfu1(1. State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China 2. Architectural Design and Research Institute of Guangdong Province, Guangzhou 510010, Chin)

机构地区：[1]同济大学环境科学与工程学院污染控制与资源化国家重点实验室 [2]广东省建筑设计研究院

出　　处：《环境工程学报》2018年第4期1164-1170,共7页Chinese Journal of Environmental Engineering

基　　金：国家重点研发计划(2016YFC0400805);国家自然科学基金资助项目(51678421)

摘　　要：在模拟氮磷废水中制备回收了一种鸟粪石负载硅藻土复合材料(MAP-D材料)用于土壤中锌的稳定。通过SEM-EDS、XRD和FTIR表征以及重金属各形态、土壤酸中和能力、土壤速效磷和酶活性测定等分析手段,探讨了MAP-D材料对土壤中锌的稳定化的影响。结果表明,MAP-D材料主要成分为负载有鸟粪石的硅藻土,当投加10%的MAP-D材料,稳定8周后,土壤中锌的可交换态含量降低56.9%,残渣态增加50.5%,土壤酸中和能力提升1倍,并提升了被锌抑制的过氧化氢酶和脲酶的活性。由此说明,MAP-D材料对土壤中的锌存在一定的稳定能力,进而实现废水中回收产品的资源化利用。Struvite loaded diatomite composite（MAP-D material） was recycled in simulative wastewater and it was adhibited to the stabilization of Zn in contaminated soil. The stabilization effect of the material was explored through SEM-EDS, XRD and FTIR characterizations and the determination of heavy metal in various forms, acid neutralization capacity（ANC）, soil available P and soil enzyme activities. The results showed that the main ingredient of MAP-D material was struvite loaded diatomite. After adding 10% MAP-D into the Zn contaminated soil in 8 weeks,the content of exchangeable Zn decreased by 56.9% while the residual Zn and ANC increased almost half and one times respectively. Also, the activities of catalase and urease, inhibited by Zn, were promoted. It＇s indicated that MAP-D material has a certain stabilizing ability in Zn contaminated soil, which implements the utilization of recycling products in wastewater.

关 键 词：鸟粪石 硅藻土 土壤 重金属 稳定化 

分 类 号：X53[环境科学与工程—环境工程]