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US 6,203,484 B1Granted
Methods for disinfecting wastes
AssigneeBASF SE
InventorsAnthony Lepore, Siegfried Lang
Life of this patent
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Abstract
The invention provided relates to the use of polyvinylpyrrolidone-iodine complexes in combination with gelling agents to produce strong disinfectants which not only physically stabilize biohazardous and infectious wastes but also kill pathogens contained in the wastes. The gelling agents include polyacyrlates that are superabsorbents.
Claims13
A method of treating liquid waste comprising:
- adding polyvinylpyrrolidone, iodine, and a gelling agent to an aqueous waste stream such that the concentration of the combined weight of the polyvinylpyrrolidone and iodine is greater than 0.3%, by weight, of the total weight of the waste, polyvinylpyrrolidone, iodine and gelling agent.
A system for treating liquid waste stream comprising:
- (a) an aqueous waste comprising human liquid waste;
- (b) a polyvinylpyrrolidone and iodine complex wherein the concentration of the complex is, by weight of the total weight of the system, greater than 0.3%;
- and (c) a gelling agent.
Dependencies are inferred from the claim text.