Patent · US Expired

Aerobic biological nitrification using biomass granulates

US5228997A · kind A · utility

14Cited by

3References

14Claims

0Family size

Assignee

Atochem · FR

Inventors

Guy Martin
Gilbert Blanchard · Belleville, FR
Michel Pouillot · Salon-de-Provence, FR

Key dates

Filing date	Dec 17, 1990
Grant date	Jul 20, 1993
Priority date	—
Expiry date	Dec 17, 2010

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S210/903
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

Effluents contaminated with NH.sub.4.sup.+ values, e.g., domestic sewage, are purified by aerobic biological nitrification within a bed of biomass granulates, e.g., a fluidized bed, such granulates comprising a nitrification effective amount of at least one nitrifying microorganism firmly adhered to support, preferably carbonate granules consumable thereby.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.