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1. WO2022005297 - METHOD OF LOWERING CONCENTRATIONS OF STRONG OXIDANTS IN WASTEWATER FROM AQUACULTURE

Publication Number WO/2022/005297
Publication Date 06.01.2022
International Application No. PCT/NO2021/050154
International Filing Date 25.06.2021
IPC
C02F 1/32 2006.1
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
30by irradiation
32with ultra-violet light
C02F 1/70 2006.1
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
70by reduction
CPC
A01K 61/10
AHUMAN NECESSITIES
01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
KANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
61Culture of aquatic animals
10of fish
A01K 61/13
AHUMAN NECESSITIES
01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
KANIMAL HUSBANDRY; CARE OF BIRDS, FISHES, INSECTS; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
61Culture of aquatic animals
10of fish
13Prevention or treatment of fish diseases
C02F 1/32
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
30by irradiation
32with ultra-violet light
C02F 1/58
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
58by removing specified dissolved compounds
C02F 1/66
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
66by neutralisation; pH adjustment
C02F 1/70
CCHEMISTRY; METALLURGY
02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
1Treatment of water, waste water, or sewage
70by reduction
Applicants
  • NIVA [NO]/[NO]
Inventors
  • CARLSSON, Pernilla Marianne
  • GARMO, Øyvind A.
  • ESCUDERO, Carlos
  • UMAR, Muhammad
Agents
  • ZACCO NORWAY AS
Priority Data
2020077301.07.2020NO
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) METHOD OF LOWERING CONCENTRATIONS OF STRONG OXIDANTS IN WASTEWATER FROM AQUACULTURE
(FR) PROCÉDÉ D'ABAISSEMENT DE CONCENTRATIONS D'OXYDANTS FORTS DANS LES EAUX USÉES PROVENANT DE L'AQUACULTURE
Abstract
(EN) The present invention relates to a method of lowering high concentration of strong oxidants such as halogens in oxidation state 0 or higher, peroxides, organic peroxides, persulphates or ozone in wastewater from aquaculture using an agent selected from sulphur dioxide and easily dissolvable salts of reduced oxyanions of sulphur, in combination with UV light treatment. In one embodiment, the method of the invention relates to neutralizing high concentration of hydrogen peroxide (H2O2) in aquaculture delousing wastewater using an agent mentioned above in combination with UV light treatment.
(FR) La présente invention concerne un procédé pour abaisser la concentration élevée d'oxydants forts tels que des halogènes à l'état d'oxydation 0 ou plus, des peroxydes, des peroxydes organiques, des persulfates ou de l'ozone dans les eaux usées provenant de l'aquaculture en utilisant un agent choisi parmi le dioxyde de soufre et les sels facilement solubles d'oxyanions réduits de soufre, en combinaison avec un traitement par lumière UV. Dans un mode de réalisation, le procédé de l'invention concerne la neutralisation d'une concentration élevée de peroxyde d'hydrogène (H2O2) dans les eaux usées d'épouillage provenant de l'aquaculture en utilisant un agent mentionné ci-dessus en combinaison avec un traitement par lumière UV.
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