Remediation of Environmental Pollution Released from Industrial Wastes by Functional Clay Minerals

功能粘土矿物修复工业废弃物环境污染

基本信息

批准号：
11555203
负责人：
CHOHJI Tetsuji
金额：
$ 4.35万
依托单位：
Toyama National College of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2001
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11555203/
关键词：
functional clay minerals waste environment remediation fluoride heavy metals endocrine disrupter soil groundwater 環境ホルモン

项目摘要

A land fill is the primary method of waste disposal. The hazardous wastes that are released from various advanced industries are also disposed. All land fills produce some leachate. Whether the leachate contaminates groundwater depends on how the land fill is built, as well as on characteristics of the site. Leachate, the rainwater which becomes contaminated as it seeps through land fill can pose a significant threat to aquifers, rivers, lakes and watersheds if left untreated. In order to study the method to stop leaks to groundwater, rivers and lakes, the functional materials were developed based on the equilibrium theory and experimental results.In order to study the chemical behavior of hazardous materials in the land fill, it is important to investigate chemical characteristics of precipitation on the land fill. The Japan Sea side of Japan receives a relatively high amount of precipitation in winter and Kosa aerosols in spring. It is well known that the precipitation in winter is a … More lmost acidic and the precipitation containing Kosa aerosols is alkaline. In this study, it was found that the amount of Kosa aerosols precipitated on Japan was increasing year by year.In the land fill, the wastes are covered with a layer of soil, which is a kind of clay. Although the clay has a function of adsorption for some hazardous materials, it is weak. In this study, calcium fluoride is investigated as an example of most popular wastes in the land fill. The solubility of calcium fluoride was analysed by the equilibrium theory and adsorption of fluoride by clay minerals was experimentally investigated. On the other hand, although activated sludge is increasing year by year, it is difficult to secure land fill for throwing it. A carbonizing method has been developed as one of methods of reducing and recycling activated sludge. In this study, we presented that carbonized activated sludge is useful for avoiding harmful metals to leach out from land fill. It is found that the carbonized activated sludge has functions to neutralize strongly the leachate containing harmful materials, to adsorb heavy metals in the leachate and to release phosphate to make insolublematerials with harmful metals. Less

土地填充是废物处置的主要方法。还处置了从各种高级行业释放的危险废物。所有土地填充都会产生一些铅。酵地下水是否取决于土地填充的建造以及现场的特征。如果不加以治疗的话，渗滤液，通过陆地填充而被污染的雨水会对含水层，河流，湖泊和流域构成重大威胁。为了研究阻止地下水，河流和湖泊泄漏的方法，基于等效的理论和实验结果开发了功能材料。日本的日本海面在冬季收到相对较高的降水量，春季的kosa气溶胶。众所周知，冬季的降水量是……最大的酸性，含有Kosa气溶胶的沉淀是醇。在这项研究中，发现在日本保存的Kosa气溶胶量逐年增加。在土地填充物中，废物覆盖有一层土壤，这是一种粘土。尽管粘土对某些危险材料具有吸附功能，但它很弱。在这项研究中，研究了氟化钙作为土地填充物中最受欢迎的废物的一个例子。通过等效理论分析了氟化钙的溶解度，并通过实验研究了粘土矿物质对氟化物的吸附。另一方面，尽管激活的污泥逐年增加，但很难确保将其扔掉。已经开发了一种碳化方法，是减少和回收活化污泥的方法之一。在这项研究中，我们介绍了碳化活性污泥对于避免有害金属从陆地填充中走出来是有用的。发现碳化活性污泥的功能可以强烈中和含有有害材料的领先，以吸附在离开中的重金属并释放磷酸盐，以使不易易符的金属用有害金属产生不可证实的材料。较少的