Environmental Risk Control of the Waste Disposal in Landfills

垃圾填埋场废物处置环境风险控制

基本信息

批准号：
14205068
负责人：
KAMON Masashi
金额：
$ 32.28万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2004
项目状态：
已结题

项目摘要

The main objective of this study is to establish a series of strategies for controlling the environmental risk related to waste disposal in landfill site during the period from its construction to abolition or landfill utilization. The main results obtained in this study can be summarized as follows :1.Fate and transport of pollutants in subsurface were analyzed by the laboratory experiments. Heavy metals and volatile organic compounds (particularly Dense Non-Aqueous Phase Liquids) are of main concern in this research. Effect of microbial activities on the mobility of heavy metals in land-fills and their interactions with bottom clay layer were mainly examined through laboratory batch and column leaching tests. Mobility of heavy metals is reduced when low ORP condition is induced by the microbial activities. In addition, acid buffering capacity of clay layer is proved to greatly contribute to the immobility of heavy metals.2.Performance of waste sludge as landfill cover layer was evalu … More ated through a series of laboratory experiments on its water retention property and air permeability. Numerical analyses were conducted to verify its applicability from the viewpoints of water balance and landfillgas collection.3.Chemical compatibilities of geosynthetics used as landfill lining materials, such as geosynthetic clay liner(GCL) and geomembrane, were evaluated to verify their in-situ hydraulic barrier performance. Particularly, hydraulic conductivity values of GCL permeated with inorganic solutions or landfill leachate were investigated considering the effect of prehydration of GCL.4.A case study of environmental risk assessment is conducted to verify the effectiveness of the remedial action for the illegal dumping of wastes containing dioxins and PCBs with regard to reduction of human health risks. The scheme for environmental risk control of waste disposal, including the geotechnical utilization of landfill after its abolition, is proposed based on the achievements of this study. Less

这项研究的主要目的是建立一系列策略，以控制与废除或垃圾填埋场利用的期间，在垃圾填埋场中与废物处置有关的环境风险。在这项研究中获得的主要结果可以总结如下：1。通过实验室实验分析地下污染物的结果和运输。在这项研究中，重金属和挥发性有机化合物（尤其是致密的非水相）是主要关注的。微生物活性对陆地填充物中重金属的迁移率及其与底部粘土层的相互作用的影响主要通过实验室批次和柱杠杆测试检查。当微生物活性诱导低ORP条件时，重金属的迁移率会降低。此外，事实证明，粘土层的酸性缓冲能力有助于重金属的固定性。2。对垃圾填埋场覆盖层进行评估的废物，通过一系列有关其保留水分和空气渗透性的实验室实验。进行了数值分析，以从水平平衡和垃圾填料集合的角度来验证其适用性。3。用作垃圾填埋衬里材料的地质合成材料的化学兼容性，例如地质合成粘土衬里（GCL）和Geomembrane，用于评估其内部的hydruic hydruic hydruic hydroupic hydroupic hydroupic hydroupic hydroupic hydroupic hydroupic hydroupic barruier carrumier绩效。特别地，研究了GCL渗透或垃圾填埋场渗透的氢电导率值考虑了GCL预氢化的影响。4。进行环境风险评估的案例研究，以验证对含有含有二氧化速素和PCBS的废物对人类健康风险的废物的非法倾倒的补救措施的有效性。根据本研究的成就，提出了废除废物处置的环境风险控制，包括废除垃圾填埋场之后的岩土技术。较少的