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WO2010131991A1 - Installation de purification par sorption d'eaux polluées - Google Patents

Installation de purification par sorption d'eaux polluées Download PDF

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Publication number
WO2010131991A1
WO2010131991A1 PCT/RU2009/000465 RU2009000465W WO2010131991A1 WO 2010131991 A1 WO2010131991 A1 WO 2010131991A1 RU 2009000465 W RU2009000465 W RU 2009000465W WO 2010131991 A1 WO2010131991 A1 WO 2010131991A1
Authority
WO
WIPO (PCT)
Prior art keywords
chemical treatment
water
pipe
hydrocyclone
tank
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/RU2009/000465
Other languages
English (en)
Russian (ru)
Inventor
Владимир Олеговнч АБРАМОВ
Вадим Муратовιιч БАЯЗИТОВ
Альфредо Алехандро ЗОЛЕЗЗИ ГАРРЕТОН
Георгий Борисович ВЕКСЛЕР
Марат Салавагович МУЛЛАКАЕВ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OBSCHESTVO S OGRANICHENNOI OTVETSTVENNOSTJU "SONOVITA"
Original Assignee
OBSCHESTVO S OGRANICHENNOI OTVETSTVENNOSTJU "SONOVITA"
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by OBSCHESTVO S OGRANICHENNOI OTVETSTVENNOSTJU "SONOVITA" filed Critical OBSCHESTVO S OGRANICHENNOI OTVETSTVENNOSTJU "SONOVITA"
Priority to EA201101640A priority Critical patent/EA019906B1/ru
Publication of WO2010131991A1 publication Critical patent/WO2010131991A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/28—Treatment of water, waste water, or sewage by sorption
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
    • C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • C02F1/463—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrocoagulation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/20—Heavy metals or heavy metal compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/32—Hydrocarbons, e.g. oil

Definitions

  • the invention relates to the field of purification of industrial and waste water from harmful impurities, including heavy metal ions, oil products and organic pollutants by sorption. It is known to use magnetite Fe 3 O 4 as a sorbent for removing oil and oil-containing organic pollutants [US 3767571] and oils [JP 53055659] from wastewater, as well as for effective purification of raw water from bacteria [JP 62053785].
  • magnetite is its use as an active layer of flow filters, for example, such as those specified in [JP 11057735, JP 7232160].
  • magnetite with adsorbed substances is precipitated using flocculants and the precipitate formed is magnetically separated [JP 52056758].
  • the disadvantage of magnetic separation is the possibility of slip of both magnetite as a sorbent and a sorbent with purified water, which leads to the necessity of separating and removing heavy metal hydroxide adsorbed on the surface of the sorbent from the stream of purified water, otherwise heavy metals can again enter the already purified water during the aging process.
  • the quality of treatment is determined precisely by the above-mentioned breakthroughs. It is known that for the purification of water from oil products, natural magnetite is pulverized and a sieve with a 200 mesh mesh is used [CN 101234806]. It was possible to achieve the efficiency of oil removal only by 78 percent, which corresponds to a decrease in the value of chemical oxygen consumption (COD) by about 76 percent.
  • COD chemical oxygen consumption
  • the main economic disadvantage of the above technologies is the significant cost of the preparation of pulverized magnetite.
  • the centrifugation method has found development.
  • the disadvantage of this installation is that the degree of purification is not high enough due to a significant breakthrough of solid particles from water, especially if the solid particles are small fractions with sizes up to 5 microns.
  • a galvanocoagulator is known [RU 2006480], in which insoluble magnetite compounds such as clathrates and goethites are formed due to electrochemical processes between the carbon-containing charge and scrap, which efficiently and reliably sorb heavy metal ions from water (the degree of purification reaches 99.9%) and suspended particles (purity 95%).
  • the treatment is carried out in an averaging tank, where the precipitate after galvanocoagulation is also sent.
  • the resulting mixture is subjected to magnetoacoustic resonance in the sound frequency range from 3.5 to 16 kHz with a radiation power of 15 ⁇ 20 mW from one to three times a day for 50 ⁇ 60 minutes.
  • the liquid phase is directed to sequential galvanic coagulation in two galvanic coagulators, the galvanic couple in the first galvanic coagulator being formed from coke and iron particles, and in the second from a mixture of coke and aluminum.
  • the precipitate is sent to the pre-treatment process, and the liquid phase is treated wastewater used in water recycling systems.
  • a device for wastewater treatment, characterized by the presence of series-connected pretreatment reactor, primary sump, galvanic coagulator, ferritor reactor, secondary sump and mechanical filter, while the sediment outlet of the primary sump is connected the sediment accumulator and the filter press are connected in series, the output of the galvanocoagulator sediment through the ferritor reactor is connected to the preliminary purification reactor, and air supply lines are connected to the preliminary purification reactor and ferritor reactor.
  • the intensification of the formation of magnetically susceptible ferrites of heavy and non-ferrous metals is carried out in an additional ferritizer reactor.
  • the disadvantage is that the device does not provide sufficient fermentation of the precipitate, which is finely dispersed, and does not allow to separate it from the treated solution, which makes it insufficiently effective in operation.
  • a plant for the treatment of industrial wastewater [RU 2130433] (prototype), containing a receiving tank for wastewater, an ejector, a water pump, a galvanic coagulator and a solid phase separation unit, characterized in that it further comprises an ultrasonic generator and an electromagnet, while an ultrasonic generator is installed between the galvanic coagulator and the electromagnet, and an ejector is installed between the receiving tank and the water pump and is connected to the compressed air line and the ballot filled with carbon dioxide, the solid phase separation unit is made in the form of a thin-layer sedimentation tank and a sand filter installed in series.
  • this installation consists of a series-connected pipeline between the intake of contaminated water to a clean water tank through the stream of purified water: a water pump; galvanocoagulator; ultrasonic generator; electromagnet; thin-layer sump and sand filter.
  • Contaminated water is provided with carbon dioxide to increase its acidity.
  • Wastewater treatment after passing through a galvanic coagulator is carried out in an ultrasonic generator with a frequency of 22 ⁇ 44 kHz to alkalize the aqueous medium and the subsequent quantitative precipitation of hydroxides of iron and heavy metals.
  • Subsequent treatment of wastewater with a magnetic field with a strength of 150 ⁇ 300 Oe provides an increase in the rate of formation of crystalline iron hydroxide nuclei, which makes it possible to increase the degree of purification of wastewater from anions, and an increase in the growth rate of crystals proper allows for subsequent stages of the wastewater treatment process in a thin-layer sump and on a sand filter, it is more efficient to separate the solid phase.
  • the main disadvantage of the installation is that the treatment of wastewater in the field of a galvanic couple leads to overgrowing of its elements by deposits of contaminated water, i.e. to passivation of the surface of the filler elements forming the galvanic pair.
  • Another disadvantage is that the cleaning performance is determined by the dynamics of the formation of magnetically susceptible forms of iron in the galvanic coagulator, which, in turn, occurs in the stream of the water being purified.
  • the technical task is to improve the quality of treatment of industrial and wastewater from harmful impurities by sorption.
  • the inventive complex is aimed at improving the sorption properties of magnetite produced by a galvanic coagulator, at optimizing the processes of separation of the sorbent and, as a result, at achieving an economically viable technology for purifying contaminated water from heavy metal ions, oil products and other contaminants.
  • a complex of sorption treatment of contaminated water comprising sequentially interconnected by a pipeline from the intake of contaminated water to a clean water tank by the flow of purified water, a chemical treatment tank, a pump and a clarification filter, while the chemical treatment tank is also connected to the galvanic coagulator a pipeline on which a buffer tank with a scraper trap function, a second pump and ultrasonic activation means are arranged in series from the galvanic coagulator to the indicated capacity, the chemical treatment tank provided with an additional pipeline forming a circulation loop on which the hydrocyclone is placed, while the circulation loop is connected to the pipeline section between the pump and the clarification filter, the branch pipe of the output of the solid phase of the hydrocyclone is connected to the chemical treatment tank, and The outlet of the discharge of the liquid fraction of the hydrocyclone is connected by a pipeline to a clarification filter.
  • a buffer tank with a scrap trap function and a chemical treatment tank have connections to a compressed air supply line.
  • the ultrasonic activation means is made in the form of a hollow chamber equipped with inlet and outlet nozzles for the medium to be treated, into which a waveguide is placed, which has an external connection with an electro-acoustic transducer of vibrations coming from an ultrasonic generator, while the waveguide is made in the form rod with a variable cross-section along its length.
  • a buffer tank with a scrap trap function and a chemical treatment tank have additional return lines located after the respective pumps and equipped with control valves. It is possible that the galvanic coagulator is connected by a pipe to a clean water tank.
  • the implementation of the claimed complex sorption treatment of contaminated water allows you to optimize the process of removing excessive amounts of heavy metals, petroleum products and other contaminants.
  • the system provides for an operational change in the cleaning mode due to the regulated use of the circulation circuit with a hydrocyclone on an additional pipeline. So, separation
  • the purified water from the sorbent occurs mainly in the hydrocyclone, the solid phase from which returns to the chemical treatment tank to maximize the use of its sorption ability.
  • Almost pure water from the hydrocyclone enters the clarification filter, and only a part of the aqueous suspension of the sorbent comes from the chemical treatment tank. Thus, the load on the clarification filter is reduced and its service life is increased.
  • the iron and coke (or copper) iron hydroxide obtained in a galvanic coagulator with electrodes is in a state far from thermodynamic equilibrium and, therefore, has high internal and surface energy, and, therefore, sorption and ion exchange ability.
  • the ultrasonic activation means located on the pipeline for feeding the pulp to the chemical treatment tank allows you to further develop the sorption surface of magnetite and, thus, significantly increase the productivity of the proposed complex.
  • the complex is unified for the treatment of contaminated waters, subject to unpredictable changes in quality indicators.
  • the invention is illustrated in FIG. 1 and 2.
  • FIG. 1 is a diagram of the equipment of the complex for sorption treatment of contaminated waters, on which: 1 - galvanic coagulator; 2 - buffer tank with scrap trap function; Behind,
  • FIG. 2 is a schematic drawing of ultrasonic activation means 4 in which: 10 is an ultrasonic generator; 11 - electro-acoustic transducer; 12 - waveguide; 13 - hollow chamber; 14 and 15, respectively, the inlet and outlet nozzles for the medium to be treated.
  • 10 is an ultrasonic generator
  • 11 - electro-acoustic transducer
  • 12 - waveguide
  • 13 - hollow chamber
  • 14 and 15 respectively, the inlet and outlet nozzles for the medium to be treated.
  • the use of the allocated capacity of chemical treatment allows you to quickly adjust the processes of sorption of contaminants on magnetite.
  • compressed air is supplied to its bottom part.
  • the clarification filter the sorbent is deposited from the chemical treatment tank, and spalling solid particles are captured from the water coming from the hydrocyclone, the water is cleaned of impurities.
  • Using a clean water tank allows the consumer to accumulate purified water.
  • a galvanic coagulator which is a cylindrical body loaded with coke (or copper) and iron scrap, and having a supply of clean water, for example from a reservoir of pure water, the formation of hydroxide forms of iron occurs, with stirring, mainly in the form of magnetite.
  • a buffer tank with a scrap trap function allows, firstly, the water purification process to be carried out regardless of the operability of the galvanic coagulator and, secondly, to prevent leakage of iron scrap unreacted in the galvanic coagulator together with the magnetite suspension. Due to the fact that magnetite compounds such as clathrates and goethites are also insoluble, but have greater buoyancy, compressed air is supplied to the bottom of the buffer tank.
  • ultrasonic activation means allows to crush the sorbent developed by the galvanocoagulator, i.e. further develop the sorption surface of magnetite.
  • a variable cross-section of the waveguide rod allows you to organize the mixing of each unit volume of the liquid medium as it passes through the zone of exposure to ultrasound.
  • the circulation circuit with a hydrocyclone placed on it allows the separation of the solid phase and purified water to the filtration stage and the sorbent is efficiently used, returning magnetite in a chemical treatment tank, to maximize the use of its sorption ability.
  • the complex works as follows (Fig. 1). From the intake, the contaminated water enters the chemical treatment tank 5, the aqueous suspension of magnetite obtained in the galvanic coagulator 1 also flows through the pipeline, from which the suspension by gravity first enters the buffer tank with the function of scrap trap 2 and then pump Sv is fed into the chemical treatment tank 5, passing through ultrasonic activation means 4. Pollution adsorbed by magnetite in the form of a suspension of the sorbent from the chemical treatment tank 5 by the pump Z are sent to the clarification filter 7.
  • the remaining part of the sorbent suspension from the pipeline section between the Za pump and the clarification filter 7 is directed to the circulation circuit, on which the hydrocyclone 6 is placed, from the pipe outlet of the solid phase of the hydrocyclone, the sorbent and unreacted magnetite are returned to the chemical treatment tank 5, and water is removed from the discharge pipe of the liquid fraction of the hydrocyclone with break-through solid particles is sent through a pipeline to a clarification filter 7.
  • the clarification filter 7 that has passed through a mixture of a suspension of the adsorbent from the chemical treatment tank 5 and the liquid fraction from the hydrocyclone 6 is considered purified water and is sent to a clean water tank 9, where it is accumulated for the consumer.
  • the ultrasonic activation means (Fig. 2) works as follows.
  • the aqueous magnetite suspension through the inlet pipe 14 enters the hollow chamber 13, into which a waveguide 12 is placed, which is externally connected to the electro-acoustic transducer of vibrations 11 coming from the ultrasonic generator 10.
  • the grinding process is intensified by the fact that the waveguide 12 is made in the form of a rod with step thickenings along its length, providing mixing of the liquid medium in the zone of ultrasonic exposure.
  • Example 1 As an example, the following are the data of the protocol of laboratory studies of the effluents of the galvanic shop 121 of the aircraft repair plant in the city of Kubinka, Moscow Region. The results of wastewater treatment by the claimed sorption treatment complex are shown in Table 1.
  • Example 2 As an example, the following are the data from the protocol of laboratory studies of the effluents of the washing section of the rolling stock of the Hevskoe depot of the St. Russia metro. The results of wastewater treatment by the claimed sorption treatment complex are shown in Table 2. Table 2.
  • the claimed complex of sorption treatment of contaminated water allows you to effectively remove excessive amounts of heavy metals, petroleum products and other contaminants. Improving the sorption properties of magnetite and optimizing the processes of separation of the suspension of sorbent makes the treatment technology economically viable.

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physical Water Treatments (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

L'invention concerne le domaine de la purification des eaux, y compris des eaux industrielles, potables ou usées, y compris de celles polluées par des métaux et des produits pétroliers, la purification s'effectuant par sorption. L'installation de purification par sorption d'eaux polluées comprend, reliés en série depuis la prise d'eau polluées jusqu'au réservoir d'eau pure (9) en direction de l'écoulement de l'eau à purifier, une cuve de traitement chimique (5), une pompe (3a) et un filtre d'éclaircissement (7). La cuve de traitement chimique (5) est reliée à un coagulateur galvanique (1) par une canalisation sur lequel sont montés en série, depuis le coagulateur galvanique (1) jusqu'à la cuve de traitement chimique (5), un réservoir tampon (2) à fonction de capture de résidus, une deuxième pompe (3c) et un moyen d'activation ultrasonique (4). La cive de traitement chimique (5) est dotée d'une canalisation supplémentaire formant un circuit de circulation dans lequel est monté un cyclone hydraulique (6). Le circuit de circulation est raccordé à un segment de la canalisation entre la pompe (3a) et le filtre d'éclaircissement (7), la tubulure de sortie de phase liquide du cyclone hydraulique est reliée à la cuve de traitement chimique (5) et la tubulure d'évacuation de fraction liquide du cyclone hydraulique (6) est reliée par une canalisation au filtre d'éclaircissement (7). L'installation de purification par sorption d'eaux polluées de l'invention permet d'éliminer efficacement les résidus en excès de métaux lourds, de produits pétroliers et d'autres polluants. L'amélioration des propriétés de sorption de la magnétite et l'optimisation des processus de séparation de la suspension de sorbant rendent cette technologie de purification rentable du point de vue économique.
PCT/RU2009/000465 2009-05-15 2009-09-10 Installation de purification par sorption d'eaux polluées Ceased WO2010131991A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EA201101640A EA019906B1 (ru) 2009-05-15 2009-09-10 Комплекс сорбционной очистки загрязненных вод

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2009118278/21A RU2422383C2 (ru) 2009-05-15 2009-05-15 Комплекс сорбционной очистки загрязненных вод
RU2009118278 2009-05-15

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WO2010131991A1 true WO2010131991A1 (fr) 2010-11-18

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PCT/RU2009/000465 Ceased WO2010131991A1 (fr) 2009-05-15 2009-09-10 Installation de purification par sorption d'eaux polluées

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012250214A (ja) * 2011-06-07 2012-12-20 Masanori Aritomi 海水浄化システム
CN106892521A (zh) * 2016-07-03 2017-06-27 佛山瑞箭体育器材有限公司 一种炼油废水预处理方法
CN113355535A (zh) * 2021-06-03 2021-09-07 昆明理工大学 一种超声波联合气浮法纯化单宁锗渣的方法及装置
CN118479597A (zh) * 2024-07-16 2024-08-13 山东大茂生态肥业有限公司 一种可循环回收利用的化肥加工用废水处理装置
CN120349055A (zh) * 2025-05-07 2025-07-22 盈祥过滤设备（上海）有限公司 一种带有压滤式过滤器的污水处理设备

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2607220C2 (ru) * 2015-03-10 2017-01-10 Публичное Акционерное Общество "Корпорация Всмпо-Ависма" Установка для очистки промышленных и ливневых сточных вод титано-магниевого производства
RU178125U1 (ru) * 2017-12-18 2018-03-23 Николай Михайлович Белковский Рыбоводная установка с замкнутым водоснабжением
RU2729787C1 (ru) * 2019-04-24 2020-08-12 Федеральное государственное бюджетное учреждение "33 Центральный научно-исследовательский испытательный институт" Министерства обороны Российской Федерации Установка для очистки водных сред от мышьяксодержащих соединений с использованием магнитоактивного сорбента

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2051121C1 (ru) * 1992-03-26 1995-12-27 Евгений Михайлович Фондорко Способ очистки воды
RU2130433C1 (ru) * 1997-05-22 1999-05-20 Новосибирский государственный проектно-изыскательский институт "ВНИПИЭТ" Способ очистки промышленных сточных вод, установка и гальванокоагулятор для его осуществления
US20040038817A1 (en) * 2000-12-13 2004-02-26 Geh Wasserchemie Gmbh & Co. Kg Process for producing an iron-containing sorption material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2051121C1 (ru) * 1992-03-26 1995-12-27 Евгений Михайлович Фондорко Способ очистки воды
RU2130433C1 (ru) * 1997-05-22 1999-05-20 Новосибирский государственный проектно-изыскательский институт "ВНИПИЭТ" Способ очистки промышленных сточных вод, установка и гальванокоагулятор для его осуществления
US20040038817A1 (en) * 2000-12-13 2004-02-26 Geh Wasserchemie Gmbh & Co. Kg Process for producing an iron-containing sorption material

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012250214A (ja) * 2011-06-07 2012-12-20 Masanori Aritomi 海水浄化システム
CN106892521A (zh) * 2016-07-03 2017-06-27 佛山瑞箭体育器材有限公司 一种炼油废水预处理方法
CN113355535A (zh) * 2021-06-03 2021-09-07 昆明理工大学 一种超声波联合气浮法纯化单宁锗渣的方法及装置
CN113355535B (zh) * 2021-06-03 2023-02-21 昆明理工大学 一种超声波联合气浮法纯化单宁锗渣的方法及装置
CN118479597A (zh) * 2024-07-16 2024-08-13 山东大茂生态肥业有限公司 一种可循环回收利用的化肥加工用废水处理装置
CN120349055A (zh) * 2025-05-07 2025-07-22 盈祥过滤设备（上海）有限公司 一种带有压滤式过滤器的污水处理设备

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Publication number Publication date
EA201101640A1 (ru) 2013-03-29
EA019906B1 (ru) 2014-07-30
RU2009118278A (ru) 2010-11-20
RU2422383C2 (ru) 2011-06-27

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