作　　者： ; ; ; ;

机构地区： 同济大学环境科学与工程学院污染控制与资源化研究国家重点实验室

出　　处： 《清洗世界》 2006年第1期1-4,共4页

摘　　要： 采用人工土柱淋溶试验方法,在不同pH值(2.9,5.0)的模拟酸雨作用下,对添加上海曲阳堆肥污泥的滩涂土壤进行了为期50天相当于3年降雨量的淋溶试验,研究了污泥中重金属Cd,Cr,Cu,Ni,Pb,Zn的溶出情况及其对环境可能产生的影响。结果表明,添加污泥的混合土壤中重金属的溶出量随着污泥比例的增加而逐渐增加,但当污泥添加用量控制在50%以内,淋溶渗滤液中6种重金属的含量均未超过农田灌溉水质标准,不会对环境产生不利影响。 For the mixed soil system added with the composted Quyang sewage sludge, the soil column models were used to study the release process of six kinds of metals under the condition of the simulated acid rain. The total amount of simulated acid rain was as much as the rainfalls of three years in Shanghai and the pH of the simulated acid rain was 2.9 or 5.0. The tested metals include cadmium, chromium, copper, nickel, lead and zinc. The results showed that the release of test heavy metals increased gradually with the increment ratio of sewage sludge in the mixed soils. It was also demonstrated that the application of the composted Quyang sewage sludge would not cause significant negative effect on the soil environment if the sludge ratio is kept under the extent of 50%.

关 键 词： 污泥 模拟酸雨 重金属 淋溶

领　　域： [环境科学与工程]