초록 ▼

Apparatus (10) for denitrification of a liquid, such as water, comprises a vertical processing tank (11) including: a bottom section (20) partially filled with activated sludge (22), bottom section (20) having a bottom (12) having a concave upward facing inner surface (13); a horizontal filter (40)

Apparatus (10) for denitrification of a liquid, such as water, comprises a vertical processing tank (11) including: a bottom section (20) partially filled with activated sludge (22), bottom section (20) having a bottom (12) having a concave upward facing inner surface (13); a horizontal filter (40) spanning tank (11) above sludge (22); an anaerobic process section (50) including a denitrifying biomass section (54); and an oxidation section (60) including a diffuser (61). The method comprising the steps of: injecting impure water (90) into sludge (22) so as to travel helically upward to mix with sludge (22); filtering with filter (40); denitrifying with denitrifying biomass (54); and oxidizing the effluent water from anaerobic biomass (54) in oxidation section (60) including bubbling air from diffuser (63). Water (90) effluent from tank (11) is sterilized with an ozonation device (86).

대표청구항 ▼

[ I claim:] [16.] A microbiological process for denitrification of water, consisting of the following steps:injecting the impure water into activated sludge in the bottom of a processing tank; the sludge including denitrifying microorganisms capable of converting nitrate into molecular nitrogen and

[ I claim:] [16.] A microbiological process for denitrification of water, consisting of the following steps:injecting the impure water into activated sludge in the bottom of a processing tank; the sludge including denitrifying microorganisms capable of converting nitrate into molecular nitrogen and oxygen or oxide gas; the water is injected so as to travel helically upward to mix with the sludge; andpassing the effluent water from the sludge upward through a horizontal filter to remove particles.