Bogatu, CorneliuCorneliuBogatuBotau, DimitrieDimitrieBotauAndres, LadislauLadislauAndresDemetrovici, LigiaLigiaDemetroviciChis, DianaDianaChisVlaicu, VasileVasileVlaicuMarsavina, DalilaDalilaMarsavina2017-04-192017-04-192010-08-30Patent no. RO 123025-B1 ; RO 123025-B8http://hdl.handle.net/123456789/856Patent Assignee Name(s) and Code(s): ECOIND INST NAT CERC DEZVOLTARE ECOLOGIE; REGIA AUTONOMA APA SI CANAL AQUATIM TIMISOARAThe invention relates to a process for treating deep waters for drinking purpose. It consists in pre-oxidizing Fe2+ ions and partially Mn2+ ions by treating water with 1 .6...2.6 mg/l ClO2 for 5 min, while slowly stirring with a rate of 50 rpm, followed by combined oxidation of Mn2+ and the ammonium ions by treating water with 0.72...0.90 mg/l ClO2 and with 2.0...2.5 mg/Cl2 for 30 minutes while slowly stirring with a rate of 50 rpm, the separation of ferric hydroxide and manganese dioxide precipitates by decantation for 50 min and filtration with a flow of 1.2-1.5 l/h per natural indigenous zeolite having the granulation of 1 3 mm, placed in the column with the height of 20 cm and the interior diameter of 2 cm, thus there being obtained iron and manganese concentrations in the treated water, of 0.05...0.1 0 mg/l and 0.02...0.04 mg/l, respectively.en-USGroundwaterTreatmentProcess for treating deep waters for drinking purpose, comprises e.g. preoxidizing iron ions and partially, manganese ions, by treating with chlorine dioxideMetoda de tratarea apelor de adancime in scop potabil prin utilizarea proceselor de oxidare cu bioxid de clor, clor si filtrare pe zeolit naturalPatent