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Study on Behavior of Hazardous Organic Compounds with Volatile and Nonionic Characteristic in Solid Waste and Soil Layer

固体废物和土层中具有挥发性和非离子特性的有害有机化合物的行为研究

基本信息

批准号：
63550390
负责人：
TANAKA Nobutoshi
金额：
$ 1.47万
依托单位：
Hokkaido University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1988
资助国家：
日本
起止时间：
1988 至 1989
项目状态：
已结题

项目摘要

1.PURPOSE: Hazardous organic compounds with volatile and nonionic characteristic such as chlorinated organic solvents have been caused environmental pollution -for example underground water pollution. As gas, liquid and solid phase exist simultaneously in solid waste and soil layer, the hazardous compounds in the layer can transport to underground water by water flow penetrating through the layer or transport to the atmosphere by gas flow. In this research the sorption characteristics of tri-chloro-ethylene(TCE) to solid waste were studied from the respects of both equilibrium and kinetics to elucidate such transport phenomena.2.RESULTS: (1)Distribution coefficients of TCE between water and solid waste were experimentally obtained. Consequently for example, the distribution coefficients are greater than those to soil or sediment and TCE sorption mechanism is considered for TCE to dissolve into organic matter in solid waste. (2)The improvement of the method of obtaining partition coefficients was presented and Henry's constants at several temperature level were obtained. (3)Partition coefficients of TCE between gas and wetted solid wastes were studied. (4)The experimental method and the method of analyzing the data from the experiment to elucidate sorption kinetics of TCE in saturated water to solid wastes and TCE in gas to wetted solid wastes were developed theoretically. (5)On the base of the theory described in (4),sorption kinetics were experimentally studied in column experiments. (6)on the above basic research,the behavior of TCE in various solid wastes layer were calculated and discussed under various conditions. (7)Under the same concept superintendence level for rejecting the waste containing high concentration TCE or permission level for accepting solid wastes were discussed.

1.用途：具有挥发性和非离子特性的有害有机化合物，如氯化有机溶剂，已造成环境污染，例如地下水污染。由于固体废弃物和土层中气、液、固三相同时存在，因此，地层中的有害化合物可以通过水流穿透地层运移到地下水中，也可以通过气流运移到大气中。本研究从平衡和动力学两个方面研究了三氯乙烷对固体废物的吸附特性，以阐明这种迁移现象。结果：(1)通过实验获得了水与固体废弃物之间的总有机碳排放分配系数。因此，例如TCE的分布系数大于土壤或沉积物的分布系数，并且考虑了TCE在固体废物中溶解到有机物中的吸附机制。(2)改进了分区系数的计算方法，得到了不同温度水平下的亨利常数。(3)研究了湿化固体废物与气体之间的TCE分配系数。(4)从理论上建立了饱和水中TCE对固体废物和气体中TCE对湿态固体废物吸附动力学的实验方法和实验数据分析方法。(5)在(4)理论的基础上，对吸附动力学进行了柱实验研究。(6)在上述基础研究的基础上，计算并讨论了不同条件下TCE在不同固体废物层中的行为。(7)在同一概念下，讨论了对含高浓度TCE废物的拒收监管级别和对固体废物的接收许可级别。