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Jean Marie Rovel, Claude Prevot, Roger Nicol: Process and apparatus for the anaerobic treatment of waste water in a filter including granular material. Degremont, Wenderoth Lind & Ponack, November 13, 1984: US04482458 (56 worldwide citation)

Waste water to be treated is introduced into a filter including granular material for supporting the biomass resulting from an anaerobic treatment operation. During such treatment operation biogas is formed, and the waste water being treated and the granular material supporting the biomass are conti ...


2
Jacques Bernard, Jean Marie Rovel, Roger Nicol, Claude Prevot: Apparatus for the anaerobic filtration of waste water. Degremont, Wenderoth Lind & Ponack, December 31, 1985: US04561974 (28 worldwide citation)

An apparatus for the anaerobic filtration of waste water includes a filter of filling material through which the waste water to be treated is passed from the bottom to the top. The filter includes upper and lower superposed layers of filling material separated by an intermediate layer of material. T ...


3
Roger Nicol: Method for the purification of waste water, notably of urban waste water. Degremont, Sandler & Greenblum, November 29, 1988: US04787978 (15 worldwide citation)

A method for the treatment of activated slurries of waste water, notably of urban waste water, characterized in that the water to be treated, previously subjected to the standard prior treatments such as screening, renewal of sediments, degreasing, and possibly a primary decantation, is directed to ...


4
Roger Nicol, Vincent Savall: Reactor for the biological treatment of sewage. Degremont, Pollock VandeSande & Priddy, March 23, 1993: US05196111 (12 worldwide citation)

Improved reactor for the biological treatment of sewage, intended to replace the aeration tank in plants comprising an anaerobic tank in which denitrification takes place, an anaeration tank where the nitrification of the effluents by aerobic bacteria is carried out and a final clarifier, which comp ...


5
Jean Durot, Roger Nicol: Apparatus for the anaerobic treatment of waste water. Degremont, Sandler & Greenblum, April 4, 1989: US04818393 (2 worldwide citation)

An apparatus for the anaerobic treatment of waste water, including in a same closed enclosure, under a gas pressure, a fermentation zone and a decantation zone, with internal recycling of the slurries from the decantation zone to the fermentation zone, made of at least two attached identical cells i ...


6
Caroline Bouchet, Roger Nicol, Claude Prevot: Method for desulphuration of the digestate and the biogas of a digester, and biogas production facility implementing said method. DEGREMONT, The Belles Group P C, June 7, 2016: US09359240

The invention relates to a method for desulphuration of the digestate and biogas in a digester (1) of urban and/or agricultural and/or industrial effluent, by biochemical and/or thermochemical processes, the digester consisting of an enclosure (2) which is closed at the top, in which anaerobic diges ...


7
Vincent Savall, Roger Nicol: Improved reactor for biological treatment of waste water.. Degremont, March 27, 1992: FR2667057-A1

Réacteur perfectionné pour le traitement biologique des eaux résiduaires, destiné à remplacer le bassin d'aération dans les installations comportant un bassin d'anoxie dans lequel s'effectue la dénitrification, un bassin d'aération où est réalisée la nitrification des effluents par des bactéries aér ...


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