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(19)

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2 830 483

(13)

(51)

IPC

C02F1/24(2006-01-01)

C02F11/15(2019-01-01)

C02F11/08(2006-01-01)

(21) (22)

Application

2023116383, 2023-06-22

(24)

Start date

2023-06-22

(22)

Actual filing date

2023-06-22

(45)

Published

2024-11-19

(72)

Inventor

Nikolaev Mikhail DmitrievichSysoeva Tatiana IgorevnaKondratev Viktor ViktorovichNemarov Aleksandr AlekseevichBriukhanova Natalia NikolaevnaTarasova Iuliia IgorevnaBudiak Aleksandr Evgenevich

(73)

Holder

Obshchestvo S Ogranichennoi Otvetstvennostiu Tsentr Energo-Resursosberegaiushchie Tekhnologii"Fgbun Institut Geokhimii Im. A.P. Vinogradova So Ran

METHOD FOR FLOTATION DEHYDRATION OF SLUDGE-LIGNIN OF PULP-AND-PAPER MANUFACTURING WASTE WATER Russian patent published in 2024 - IPC C02F1/24 C02F11/15 C02F11/08

Abstract RU 2830483 C1

FIELD: chemistry.

SUBSTANCE: invention relates to treatment of sewage sludge, particularly sludge-lignin of pulp and paper industry. Sludge-lignin is dehydrated by flotation. Current with density less than or equal to 0.01 A/cm² is supplied to sludge-lignin, which is sufficient for destruction of part of hydrate layers on surface of sludge-lignin and formation of hydrophobic sections on them. Then, aeration is performed with oversludge water saturated with air or air.

EFFECT: dehydration of sludge-lignin without use of reagents with reduction of power consumption.

4 cl, 3 ex

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RU 2 830 483 C1

Authors

Nikolaev Mikhail Dmitrievich

Sysoeva Tatiana Igorevna

Kondratev Viktor Viktorovich

Nemarov Aleksandr Alekseevich

Briukhanova Natalia Nikolaevna

Tarasova Iuliia Igorevna

Budiak Aleksandr Evgenevich

Dates

2024-11-19—Published

2023-06-22—Filed