Method for processing residual baths from the photographic and p

Details Method for processing residual baths from the photographic and p Method for processing residual baths from the photographic and p

1990-10-01

1992-07-07

Niebling, John

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

75713, 423 23, 423DIG20, 210912, C01G 100, C25C 100

Patent

active

051280027

ABSTRACT:
A method for processing residual liquids comprising organic complexes of heavy metals, sulphur and nitrogen compounds and amongst others originating from fixing baths and the like of the photographic and photochemical industries, whereby the residual liquid is sprayed in at least one spraying chamber or area with addition of nitrates and calcium ions into a hot, oxidizing gas flow, in particular originating from industrial installations or combustion furnaces.

REFERENCES:
patent: 3836987 (1974-09-01), Gibbons et al.
patent: 3954381 (1976-05-01), Marecaux
patent: 3982932 (1976-09-01), Korosi
patent: 4002524 (1977-01-01), Damgaard-Iverson et al.
patent: 4079585 (1978-03-01), Helleur
patent: 4132640 (1979-01-01), Filzmoser
patent: 4294812 (1981-10-01), Oler
patent: 4323430 (1982-04-01), Glassman et al.
patent: 4462911 (1984-07-01), Samhaber

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