Co-Disposal of Hazardous and Municipal Wastes in Landfills: Experimental Work

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Abstract
During the past 15 years considerable research has taken place in the U.K. to investigate the decomposition processes occurring within municipal waste landfills. This, in turn, has led to a better understanding of the environmental fate of many industrial wastes currently, or formerly, co-disposed with municipal refuse. Co-disposal is defined in this paper as the disposal of chemical wastes in an admixture with domestic waste so that full advantage is taken of the attenuation and biochemical processes operating within a landfill to reduce the environmental impact to an insignificant level. Central to this philosophy is the maintenance of a balanced input of different wastes to ensure that attenuation and degradation processes are not overwhelmed. It is contended that co-disposal is an effective disposal option for a wide range of industrial wastes at correctly sited and well managed landfills. Co-disposal research findings for three selected industrial waste types are presented and related to the scientific basis for the prohibition, or continuation of their disposal to landfills.

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