RU96114464A - METHOD FOR CLEANING WATER FROM DISSOLVED ORGANIC SUBSTANCES - Google Patents

METHOD FOR CLEANING WATER FROM DISSOLVED ORGANIC SUBSTANCES

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Publication number
RU96114464A
RU96114464A RU96114464/25A RU96114464A RU96114464A RU 96114464 A RU96114464 A RU 96114464A RU 96114464/25 A RU96114464/25 A RU 96114464/25A RU 96114464 A RU96114464 A RU 96114464A RU 96114464 A RU96114464 A RU 96114464A
Authority
RU
Russia
Prior art keywords
membrane
organic substances
dissolved organic
oxidizing agent
purified water
Prior art date
Application number
RU96114464/25A
Other languages
Russian (ru)
Other versions
RU2117517C1 (en
Inventor
Ф.А. Махмутов
Р.Н. Мишкин
Е.И. Царева
Original Assignee
Институт физиологически активных веществ РАН
Filing date
Publication date
Application filed by Институт физиологически активных веществ РАН filed Critical Институт физиологически активных веществ РАН
Priority to RU96114464A priority Critical patent/RU2117517C1/en
Priority claimed from RU96114464A external-priority patent/RU2117517C1/en
Priority to JP34415496A priority patent/JPH1043775A/en
Priority to EP19970111977 priority patent/EP0819649A1/en
Application granted granted Critical
Publication of RU2117517C1 publication Critical patent/RU2117517C1/en
Publication of RU96114464A publication Critical patent/RU96114464A/en

Links

Claims (9)

1. Способ очистки воды от растворенных органических веществ, включающий приведение раствора в контакт с полупроводниковым фотокатализатором, облучение их ультрафиолетом в течение времени, достаточного для разрушения примесей, и отделение очищенной воды от фотокатализатора мембранной фильтрацией, отличающийся тем, что все три стадии осуществляют одновременно путем фильтрации раствора с объемной скоростью 30 - 180 л/ч • м2 и давлении 0,15 - 12 атм через пористую мембрану из полупроводникового материала на основе TiO2, CdS, SrTiO3, Fe2O3, являющуюся фотокатализатором, при одновременном облучении мембраны ультрафиолетом в присутствии избытка окислительного агента.1. A method of purifying water from dissolved organic substances, including bringing the solution into contact with a semiconductor photocatalyst, irradiating them with ultraviolet light for a time sufficient to destroy impurities, and separating the purified water from the photocatalyst membrane filtration, characterized in that all three stages are carried out simultaneously by filtering the solution with a bulk velocity of 30 - 180 l / h • m 2 and a pressure of 0.15 - 12 atm through a porous membrane of a semiconductor material based on TiO 2 , CdS, SrTiO 3 , Fe 2 O 3 , which is f otocatalyst, while irradiating the membrane with ultraviolet light in the presence of an excess of an oxidizing agent. 2. Способ по п. 1, отличающийся тем, что окислительный агент вводят предварительно и в качестве окислительного агента используют кислород или перекись водорода в количестве 3 - 35-мольного избытка по отношению к суммарной концентрации растворенных органических веществ в очищаемой воде. 2. The method according to p. 1, characterized in that the oxidizing agent is introduced preliminarily and oxygen or hydrogen peroxide is used as the oxidizing agent in an amount of 3 to 35 molar excess with respect to the total concentration of dissolved organic substances in the purified water. 3. Способ по п. 1, отличающийся тем, что в очищаемую воду предварительно в качестве окислительного агента вводят озон в количестве 2 - 16-мольного избытка по отношению к суммарной концентрации растворенных органических веществ в очищаемой воде. 3. The method according to p. 1, characterized in that ozone is introduced into the purified water first as an oxidizing agent in an amount of 2-16 molar excess relative to the total concentration of dissolved organic substances in the purified water. 4. Способ по пп. 1 - 3, отличающийся тем, что суммарная концентрация растворенных органических веществ не превышает 2400 ppm. 4. The method according to PP. 1 to 3, characterized in that the total concentration of dissolved organic substances does not exceed 2400 ppm. 5. Способ по пп. 1 - 4, отличающийся тем, что введение кислорода или озона осуществляют через газопроницаемую водонепроницаемую мембрану. 5. The method according to PP. 1 to 4, characterized in that the introduction of oxygen or ozone is carried out through a gas-permeable waterproof membrane. 6. Способ по пп. 1 - 5, отличающийся тем, что в качестве пористой мембраны используют динамическую мембрану в виде слоя тонкодисперсной суспензии полупроводникового фотокатализатора с размером частиц 0,02 - 3,0 мкм на крупнопористой подложке. 6. The method according to PP. 1 to 5, characterized in that a dynamic membrane is used as a porous membrane in the form of a layer of a finely dispersed suspension of a semiconductor photocatalyst with a particle size of 0.02 - 3.0 μm on a large-pore substrate. 7. Способ по пп. 1 - 6, отличающийся тем, что пористая подложка выполнена из УФ-прозрачного материала, а облучение мембраны ультрафиолетом ведут со стороны пористой подложки. 7. The method according to PP. 1 - 6, characterized in that the porous substrate is made of UV-transparent material, and the membrane is irradiated with ultraviolet light from the side of the porous substrate. 8. Способ по пп. 1 - 5, отличающийся тем, что в качестве пористой мембраны используют спеченную керамическую мембрану с размерами пор 0,004 - 0,50 мкм. 8. The method according to PP. 1 to 5, characterized in that as a porous membrane using a sintered ceramic membrane with pore sizes of 0.004 - 0.50 μm. 9. Способ по пп. 1 - 8, отличающийся тем, что раствор подают на пористую мембрану тангенциальным потоком со скоростью 0,2 - 5,0 м/с. 9. The method according to PP. 1 to 8, characterized in that the solution is fed onto the porous membrane by a tangential flow at a speed of 0.2 - 5.0 m / s.
RU96114464A 1996-07-16 1996-07-16 Method of removing dissolved organics from water RU2117517C1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
RU96114464A RU2117517C1 (en) 1996-07-16 1996-07-16 Method of removing dissolved organics from water
JP34415496A JPH1043775A (en) 1996-07-16 1996-12-24 Decomposing method of organic matter in water by photocatalyst
EP19970111977 EP0819649A1 (en) 1996-07-16 1997-07-14 Photocatalytic method for treatment of contaminated water

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU96114464A RU2117517C1 (en) 1996-07-16 1996-07-16 Method of removing dissolved organics from water

Publications (2)

Publication Number Publication Date
RU2117517C1 RU2117517C1 (en) 1998-08-20
RU96114464A true RU96114464A (en) 1998-10-27

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
RU96114464A RU2117517C1 (en) 1996-07-16 1996-07-16 Method of removing dissolved organics from water

Country Status (3)

Country Link
EP (1) EP0819649A1 (en)
JP (1) JPH1043775A (en)
RU (1) RU2117517C1 (en)

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