A waste disposal facility is designed as a containment facility for pollution, and designed based on a waste classification thus determining the design requirements. The system as a whole consists of both a barrier and drainage. These complementary functions manage the resultant pollutants of the waste. The functions are integrally linked and any element thereof can affect its performance as a system or individual components.
The barrier component of the system comprises of a composite liner made up of a geomembrane and clay layer (if appropriate substituted for a geosynthetic clay liner). The options in geosynthetic material for the drainage layer can include one or more of the following; a cuspated drain, geocomposite drain, geo-net and geo-pipes.
Waste disposal facilities can include amongst others landfills (e.g. for municipal or industrial waste), tailing facilities (for mining or industrial waste) and pollution control dams (for liquid waste or contaminated water). These facilities have to be designed for site specific and waste specific conditions.