The suspended pollutants would be incorporated into the final hardened concrete. During this solidification process, the concrete formation binds and strengthens the mass, coals and incorporates some contaminant molecules in the siliceous solids, and block pathways between nores. Due to the elevated pH of cement mixtures in the range of 9-11, most multivalent cations are converted into insoluble hydroxides or carbonates. Thus, this process is highly effective for waste components with high levels of toxic metals. However, the presence of certain inorganic compounds and organic compounds in the waste can create an interference mechanism delaying the setting and curing of the final product. Biczok (1967) presented two lists of industrial wastes that are harmless or deemed to be aggressive to cementitous products. The list of wastes that can be tolerated includes