Evaluation of a treatment system for spent machine coolants and oily wastewater

Montmorillonite-based formulation are available which offer the low volume producer of emulsified oil or petrochemical waste an alternative to capital intensive systems such as ultrafiltration and to chemical systems which require multiple pH adjustments and polymer additions. The value of the system lies in its ability to treat oily or petrochemical waste using one addition of reactant and one low cost piece of machinery. Of great future importance is the final production of encapsulated, nonleachable sludge which can usually be disposed of in an ordinary refuse landfill.