Method for biologically treating ammonium perchlorate with pooling of the microfiltration
AssigneeArianegroup SAS
InventorAurélie Mano
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Abstract
TA method for treating an aqueous solution containing ammonium perchlorate and optionally nitrate ions, the method having a nitrification/denitrification sequence then a step of reducing perchlorates, the liquid effluent obtained at the end of this step of reducing perchlorates being subjected to a first membrane filtration, the liquid effluent obtained following this first membrane filtration being put into contact, in a reactor in aerobic conditions, with microorganisms able to carry out the oxidation of organic materials, then the liquid effluent leaving this reactor being subjected to a second membrane filtration, the first membrane filtration and the second membrane filtration being carried out on the same membrane filtration unit.
Claims7
A method for treating an aqueous solution containing ammonium perchlorate and optionally nitrate ions, said method having a nitrification/denitrification sequence then a step of reducing perchlorates, a liquid effluent obtained at the end of the step of reducing perchlorates being subjected to a first membrane filtration,
- wherein a permeate obtained from the first membrane filtration is put into contact, in a reactor in aerobic conditions, with microorganisms able to carry out the oxidation of organic materials,
- then in that a liquid effluent leaving the reactor is subjected to a second membrane filtration,
- the first membrane filtration and the second membrane filtration being carried out on a same membrane filtration unit.
Dependencies are inferred from the claim text.