土壤重金属污染特点及治理方法研究  

Research on the Characteristics and Treatment Methods of Soil Heavy Metal Pollution

作　　者：王鑫彤 Wang Xintong(Dalian Chengze Testing Co.,Ltd.,Dalian Liaoning 116000,China)

机构地区：[1]大连诚泽检测有限公司,辽宁大连116000

出　　处：《山西化工》2024年第5期222-223,226,共3页Shanxi Chemical Industry

摘　　要：简要介绍了混有较高重金属的土壤特点,从物理、生物各个方面,梳理了调整土壤重金属含量、降低土壤污染性的技术方法;以微生物法为例,联合电动法,对含镍土地进行综合治理,开展技术实践分析。经实践发现:案例矿区内,镍含量为50 mg/kg时,有助于盐生草生长。当镍含量高于50 mg/kg时,对于盐生草生长形成一定抑制作用。使用“电动+微生物”联合的形式,治理镍金属,当电压处于0~1.5 V/cm范围内时,土壤酸碱值会发生一定波动,有逐渐减小趋势。进行2周治理后,1.5 V/cm电压条件的镍含量最低,治理效果最好。使用联合法治理镍金属,治理2周内,镍残渣态占比增加,可交换态占比减少,使其状态更为平稳,技术效果显著。This article briefly introduces the characteristics of soil mixed with high levels of heavy metals,and summarizes the technical methods for adjusting soil heavy metal content and reducing soil pollution from physical and biological aspects.Taking microbial method as an example,combined with electric method,comprehensive treatment of nickel containing soil is carried out,and technical practice analysis is carried out.Through practice,it has been found that in the case mining area,a nickel content of 50 mg/kg is beneficial for the growth of halophytic grass.When the nickel content is higher than 50 mg/kg,it has a certain inhibitory effect on the growth of halophytic grass.Using a combination of electric and microbiological methods to treat nickel metal,when the voltage is within the range of 0 to 1.5 V/cm,the soil p H value will fluctuate and gradually decrease.After 2 weeks of treatment,the nickel content was the lowest under a voltage of 1.5 V/cm,and the treatment effect was the best.Using the joint rule of law to manage nickel metal,within 2 weeks of treatment,the proportion of residual nickel increased and the proportion of exchangeable nickel decreased,making its state more stable and achieving significant technical results.

关 键 词：土壤 电压 镍 

分 类 号：X53[环境科学与工程—环境工程]