Global Patent Index - EP 1123719 A2

EP 1123719 A2 20010816 - Process for treatment of residues containing chromium (VI)

Title (en)

Process for treatment of residues containing chromium (VI)

Title (de)

Verfahren zur Behandlung von Chrom(VI)-haltigen Rückständen

Title (fr)

Procédé pour le traitement de résidus contenant du chrome (VI)

Publication

EP 1123719 A2 20010816 (DE)

Application

EP 00128428 A 20001228

Priority

DE 10000709 A 20000110

Abstract (en)

[origin: DE10000709A1] Treatment of residues containing chromium(VI) compounds from chemical, metallurgical and incineration processes comprises mixing the residues with additive(s) selected from ferrous sulfate mono- to heptahydrate, ferrous chloride, ferrous ammonium sulfate mono- to heptahydrate and manganous sulfate in a medium with pH greater than 4. Treatment of residues containing chromium(VI) compounds from chemical, metallurgical and incineration processes comprises mixing the residues with additive(s) selected from ferrous sulfate mono- to heptahydrate (FeSO4 . nH2O), ferrous chloride (FeCl2), ferrous ammonium sulfate mono- to heptahydrate [Fe(NH4)2(SO4)2 . nH2O] and manganous sulfate (MnSO4) n : 1-7 in a medium with pH greater than 4.

[origin: DE10000709A1] Treatment of residues containing chromium(VI) compounds from chemical, metallurgical and incineration processes comprises mixing the residues with additive(s) selected from ferrous sulfate mono- to heptahydrate, ferrous chloride, ferrous ammonium sulfate mono- to heptahydrate and manganous sulfate in a medium with pH greater than 4. Treatment of residues containing chromium(VI) compounds from chemical, metallurgical and incineration processes comprises mixing the residues with additive(s) selected from ferrous sulfate mono- to heptahydrate (FeSO4 . nH2O), ferrous chloride (FeCl2), ferrous ammonium sulfate mono- to heptahydrate (Fe(NH4)2(SO4)2 . nH2O) and manganous sulfate (MnSO4) n = 1-7 in a medium with pH greater than 4.

Abstract (de)

Um den Chrom(VI)-Gehalt von Rückständen aus chemischen, metallurgischen und Verbrennungsprozessen zu senken, wird der Rückstand mit einem oder mehreren der Stoffe Eisensulfat, Eisenchlorid, Eisenammoniumsulfat und Mangansulfat versetzt.

IPC 1-7

A62D 3/00

IPC 8 full level

A62D 3/33 (2007.01); A62D 101/08 (2007.01); A62D 101/43 (2007.01)

CPC (source: EP)

A62D 3/33 (2013.01); A62D 2101/08 (2013.01); A62D 2101/43 (2013.01)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

DOCDB simple family (publication)

DE 10000709 A1 20010719; EP 1123719 A2 20010816; EP 1123719 A3 20010912

DOCDB simple family (application)

DE 10000709 A 20000110; EP 00128428 A 20001228