WATER SOLUTION CLEANING METHOD (VERSIONS) Russian patent published in 2005 - IPC

FIELD: cleaning of sewage water.

SUBSTANCE: invention relates to reagent methods of cleaning of sewage water containing water-soluble polymers and radioactive admixtures. Proposed method of cleaning of water solution includes heating of solution to temperature of not less than 82.2°C (180°F), addition of at least one oxidizer into water solution and keeping water solution at reaction temperature of at least 82.2°C (180°F) for period sufficient for interaction, destruction or decomposition of at least part of polymer with forming at least one destruction product. Hydrogen peroxide can be used as oxidizer. Proposed method guarantees complete solubilization of polyvinyl alcohol, destruction of polymer material by hydroxyl radicals, sterilization, filtration and destruction of clothes, foot equipment and other articles made of polyvinyl alcohol and contaminated with radioactive material. Method includes also biodecomposition of formed organic acids with getting of safe and ecologically optimum cleaned flow good for discharge into waste water disposal system.

EFFECT: provision of reliable cleaning of water.

39 cl, 8 ex, 2 tbl, 12 dwg