Title:
STRUCTURE FOR INHIBITING TOXIC SUBSTANCE IN DUST DEPOSIT LEACHATE CONTAINING TOXIC SUBSTANCE HAVING SEALING LAYER CONSISTING OF MINERAL MATERIAL AND MANUFACTURE OF SEALING LAYER
Document Type and Number:
Japanese Patent JPS63310689
Kind Code:
A
Abstract:
To retain contaminants from landfill leachates, it is proposed to assign to a sealing layer (2) of mineral sealing materials, for example clay minerals, an adsorptive layer (6) which contains, at least in the form of mixtures, materials which are able to bind contaminants in the leachate by physical and/or chemical adsorption. In the case of very slow percolation through a layer of mineral sealing materials, as corresponds to a leaching or diffusion process, it is possible to withdraw the contaminants from the leachate on the solid body, and thus retain them. The essential advantage of the invention is that as a result of these adsorption processes, the permeability of the complete system lessens with increasing age, and the sealing action therefore improves to beyond geological time periods.
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Inventors:
KUREMENSU FUINSUTERUUARUDERU
YURUGEN SHIYUPIIRURESU
YURUGEN SHIYUPIIRURESU
Application Number:
JP12861088A
Publication Date:
December 19, 1988
Filing Date:
May 27, 1988
Export Citation:
Assignee:
DYCKERHOFF & WIDMANN AG
International Classes:
B09B1/00; E02D19/18; E02D31/00; (IPC1-7): B09B1/00
Domestic Patent References:
| JPS52150783A | 1977-12-14 | |||
| JPS63194789A | 1988-08-11 |
Attorney, Agent or Firm:
Mitsuyoshi Ezaki (1 person outside)