作　　者： ; ;

机构地区： 华南理工大学环境科学与工程学院

出　　处： 《陕西科技大学学报（自然科学版）》 2007年第2期47-51,共5页

摘　　要： 通过对6种来源不同的印染污泥试样在分析其含水率、灰分、pH值、重金属含量等基本理化特性的基础上,对印染污泥进行了浸出毒性研究.结果表明,印染污泥属于高水分、高灰分含量的偏碱性物质,pH在7.0-9.0之间.总量分析表明;印染污泥中Zn、Pb、Cu的含量较高,Cr、Ni及Cd的含量较低,平均值分别为983.42 mg·kg^-1、251.83 mg·kg^-1、216.06 mg·kg^-1、67.22 mg·kg^-1、27.25 mg·kg^-1及1.48 mg·kg^-1,但就农业利用来看,Zn、Pb是印染污泥中主要的重金属污染物;浸出毒性试验表明,各试样浸出液中重金属等有害组成的浓度均远远低于国家标准值,说明印染污泥属于非危险废物,但各重金属的浸出特性又各自不同,可能主要与它们在试样中存在的化学形态有关. Water content, ash content, and pH values were studied, together with total content of heavy metals, identification of leaching toxicity, by 6 samples from 6 different textile dyeing plants. All textile dyeing sludges had very high moisture levels and high ash levels, and were slightly alkaline with pH range of 7.60-9.09. The total concentrations of Zn, Pb, and Cu in all sludge samples were relatively higher than that of Cr, Ni, and Cd, with the average values of 983.42 mg·kg^-1, 251.83 mg ·kg^-1 , 216.06 mg ·kg^-1 , 67.22 mg·kg^-1 , 27.25 mg·kg^-1, and 1.48 mg ·kg^-1, respectively. But Zn and Pb were main contaminants with respect to agricultural use. Leaching tests indicated that textile dyeing sludges belonged to non-hazardous wastes due to the very lower concentrations of hazardous compositions such as heavy metals in the leachates than that of the state control standard. But each of metals in samples showed obvious different leaching behavior, possibly depending on their chemical forms.

关 键 词： 印染污泥 理化特性 重金属 浸出毒性

领　　域： [环境科学与工程]