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Machine translation
1. (WO1980002281) A PROCESS FOR PRECIPITATING HEAVY METALS FROM WASTEWATER
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/002281    International Application No.:    PCT/SE1980/000121
Publication Date: 30.10.1980 International Filing Date: 22.04.1980
IPC:
C02F 1/52 (2006.01), C02F 3/12 (2006.01), C02F 3/34 (2006.01), C22B 3/18 (2006.01)
Applicants:
Inventors:
Priority Data:
7903598 24.04.1979 SE
Title (EN) A PROCESS FOR PRECIPITATING HEAVY METALS FROM WASTEWATER
(FR) PROCEDE DE PRECIPITATION DE METAUX LOURDS A PARTIR D"EAUX RESIDUAIRES
Abstract: front page image
(EN)A process for precipitating heavy metals from wastewater containing sulfate ions by treatment of the water with sulfate reducing bacteria. S aid bacteria will reduce the sulfate ions to hydrogen sulfide which in its turn will precipitate the metal ions in the form of metal sulfides. According to the invention the bacteria are cultured in one or more culturing vessels in the presence of a nutritive solution and a portion of the wastewater, and the resulting aqueous solution containing hydrogen sulfide produced by the bacteria is introduced into a precipitation vessel together with the remaining major portion of the wastewater.
(FR)Un procede de precipitation de metaux lourds a partir d"eaux residuaires contenant des ions sulfates consiste a traiter l"eau avec des bacteries de reduction du sulfate. Ces bacteries reduisent les ions sulfates en sulfure d"hydrogene qui a son tour precipite les ions metalliques sous forme de sulfures metalliques. Selon l"invention, les bacteries sont cultivees dans un ou plusieurs recipients de culture en presence d"une solution nutritive et une partie des eaux residuaires, et la solution aqueuse resultante contenant le sulfure d"hydrogene produit par les bacteries est introduite dans un recipient de precipitation avec la partie principale restante des eaux residuaires.
Designated States:
Publication Language: English (EN)
Filing Language: English (EN)