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Water treatment method for removing pollution through cooperation of ruthenium and high-valence iron

A high-priced iron and water treatment technology, used in water/sewage treatment, oxidized water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of poor chemical stability and weak oxidation ability, and make up for the decline in oxidation ability. , strong oxidizing ability, and the effect of a wide range of pH

Inactive Publication Date: 2017-12-08
HOHAI UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Technical problem to be solved: In order to solve the technical problems of poor stability and weak oxidation ability of existing high-valent iron water treatment agents, the present invention provides a water treatment method that combines ruthenium with high-valent iron to remove pollution

Method used

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  • Water treatment method for removing pollution through cooperation of ruthenium and high-valence iron

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specific Embodiment approach 1

[0017] Specific embodiment one: present embodiment is the water treatment method that ruthenium combines high-valent iron to remove pollution, and it is realized by the following steps: to the reactor that water to be treated is housed, add ruthenium agent and high-valent iron, make the concentration of high-valent iron be 0.1-200mg / L, the molar ratio of ruthenium agent to high-valent iron is 1:1-100, that is, the water treatment method of using ruthenium combined with high-valent iron to remove pollution is completed, wherein the residence time of the water to be treated in the reactor is controlled to be 5- For 60 minutes, keep stirring during the water treatment process, and the water to be treated is sewage, secondary effluent of sewage plant and source water.

[0018] The way of adding high-valent iron in this embodiment is: hexavalent iron is directly added in solid form, or is added in its solution; both pentavalent iron and tetravalent iron are directly added in solid f...

specific Embodiment approach 2

[0020] Embodiment 2: This embodiment is different from Embodiment 1 in that the high-valent iron is one or a mixture of hexavalent iron, pentavalent iron or tetravalent iron. Other steps and parameters are the same as those in Embodiment 1.

[0021] In this embodiment, when the high-valent iron is a mixture of hexavalent iron, pentavalent iron or tetravalent iron, the three are mixed in any ratio. Among them, hexavalent iron is K 2 FeO 4 、Na 2 FeO 4 or MgFeO 4 One or a mixture of several; five valent iron is KFeO 3 or NaFeO 3 One or a mixture of two; four valent iron is K 2 FeO 3 or Na 2 FeO 3 one or a mixture of the two.

specific Embodiment approach 3

[0022] Specific embodiment three: the difference between this embodiment and specific embodiment one is that the high-valent iron is hexavalent iron, wherein the hexavalent iron is K 2 FeO 4 、Na 2 FeO 4 or MgFeO 4 one or a mixture of several. Other steps and parameters are the same as those in Embodiment 1.

[0023] In the present embodiment, hexavalent iron is K 2 FeO 4 , Na 2 FeO 4 and MgFeO 4 Mix in any ratio.

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Abstract

The invention provides a water treatment method for removing pollution through the cooperation of ruthenium and high-valence iron. The method particularly comprises the step of adding a ruthenium medicament and high-valence iron into a reactor containing to-be-treated water, wherein a stirring state is maintained in the water treatment process, and to-be-treated water is sewage, secondary effluent of a sewage plant and source water. The ruthenium medicament is high in oxidative activity, so that the oxidation rate of the high-valence iron can be greatly increased; and the ruthenium medicament has particularly outstanding performance under a faintly acid condition and a neutral condition, so that the phenomenon that the oxidizing capacity of the high-valence iron degraded due to poor stability of the high-valence iron under the faintly acid condition and the neutral condition can be made up, and the problems that an existing high-valence iron water treatment agent is poor in stability, weak in oxidizing capacity and the like are effectively solved.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a water treatment method for removing pollution by combining ruthenium with high-valent iron. Background technique [0002] In recent years, with the development of industry and agriculture, the types and quantities of organic pollutants discharged into water bodies have increased significantly, and drugs, personal care products, endocrine disruptors, etc. that have potential toxicity to organisms can often be detected in drinking water. organic matter. At present, the oxidation method is generally used to remove organic matter in water, such as adding chlorine-containing oxidants, ozone, hydrogen peroxide, etc. as oxidizing agents. Among them, chlorine-containing oxidants and ozone will produce substances harmful to organisms during water treatment, such as bromate (carcinogenic) and chlorite (destruction of red blood cells), etc.; the use of hydrogen pero...

Claims

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Application Information

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IPC IPC(8): C02F1/72C02F101/34C02F101/30C02F101/38
CPCC02F1/725C02F2101/30C02F2101/345C02F2101/38
Inventor 张静高莹朱亮史震宇
Owner HOHAI UNIV
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