不同pH值对施泥红壤中Pb、Cr形态影响的研究  

Study on the Influence of Pb、Cr Morphology in Applying Sewage Sludge Into Jiangxi Red Soil by Different pH

作　　者：童丽敏 陈谊 TONG Limin;CHEN Yi(Guangfeng Ecological Environment Bureau of Shangrao City,Shangrao Jiangxi 334600,China;Jiangxi Yichun Ecological Environment Monitoring Center,Yichun Jiangxi 336000,China)

机构地区：[1]上饶市广丰生态环境局,江西上饶334600 [2]江西省宜春生态环境监测中心,江西宜春336000

出　　处：《江西化工》2025年第1期90-93,共4页Jiangxi Chemical Industry

摘　　要：实验以江西典型红壤为供试土壤,向土壤中施加城镇生活污水处理厂二沉池剩余污泥,污泥含水率约为78%。同时,采用BCR技术探讨了不同污泥施加量(0%、5%、15%)对不同pH值(3、5、7、9)下土壤Pb、Cr的形态分布规律的影响研究。实验结果表明,重金属Pb各形态含量大小顺序为:残渣态>可还原态>可交换态>可氧化态,说明南方土壤铁锰氧化态的Pb较多;重金属Cr各形态含量大小顺序为:残渣态>可氧化态>可还原态>可交换态,说明南方土壤有机结合态的Cr较多。In this experiment,the red soil in Jiangxi was used as the tested soil,and the sludge was used as the remaining sludge in the two sedimentation tank of the sewage treatment plant.Meanwhile,BCR was used to study the effects of different amounts of sludge(0%,5%and 15%)on the morphology distribution of Pb and Cr in different pH(3,5,7 and 9).It is shown that the content of heavy metal Pb can be:Residue state>Reducible state>Exchange state>Oxidation state,It indicates that there are more Pb in the soil iron and manganese oxidation state in the southern soil;It is found that the content of heavy metal Pb can be:Residual state>Oxidation state>Reducible state>Exchange state,indicating that there is more organic bound Cr in southern soil.

关 键 词：红壤 重金属 BCR PH值 

分 类 号：X53[环境科学与工程—环境工程]