TREATMENT OF SEWAGE AND OTHER CONTAMINATED LIQUIDS WITH RECOVERY OF WATER BY DISTILLATION AND OXIDATION

摘要

In a process for distillation of water and combustion of waste and other contaminants in liquids, the contaminated liquid is introduced onto the surface of a molten salt bath which acts as an efficient heat transfer mechanism for producing flash distillation of the water and as a catalyst in promoting efficient oxidation of the organic contaminants. In one form, the salt bath may be a mixture of neutral salts; in another form, the salt bath contains a chemical oxidizer which continuously releases nascent oxygen and retakes ambient oxygen, thereby maintaining an equilibrium pressure of oxygen gas which aids the oxidation process. Where the liquid contains only salty residues, the water is evaporated off while the salt residue remains and adds to the molten bath without impairment of the heat transfer capability of the bath.