Abstract: A method for treating liquid and semi-liquid wastes to render them fit for ultimate disposal, by first determining the ionic charge of the waste counter ions. An appropriate suspension of emulsified asphalt particles is then selected having an opposite particle charge to the ionic charge of the waste counter ions. The waste is then mixed with the selected suspension of emulsified asphalt particles at ambient temperature in an amount sufficient to react with the waste counter ions and coalesce into a hydrophobic mass.

Abstract: A method and apparatus for treating human waste by solidification. The method performed by the disclosed embodiment comprises receiving the waste in a toilet or receptacle, liquidizing the waste with a macerating pump, adding to the liquidized waste a solidification agent, mixing the liquidized waste and the solidification agent, and transferring the mixture of waste and solidification agent to a disposable container. The disposable container can be discarded through conventional solid waste handling procedures or discarded in sanitary landfills. The disclosed apparatus introduces a quantity of solidification chemicals into a liquidized waste provided from a holding tank of a recirculating toilet, and directs the mixture of waste and solidification agent into the disposable container.

Abstract: A method of controlling the gelling time during the solidification of multi-phased liquid and semi-liquid wastes comprising admixing the waste with cement, a powdered alkali metal silicate and a liquid alkali metal silicate.

Abstract: A method of treating aqueous liquid and semi-liquid wastes to render them fit for ultimate disposal in a sedentary mass, by admixing with the waste a solidification agent, encapsulating the admixture before solidification in an elongate, pliable, tubular membrane, sealing the ends of the membrane, and allowing the admixture to set to a sedentary mass.