Electric flocculation and tubular micro-filtration coupled high-concentration brine deep defluorination device

A tubular microfiltration and tubular microfiltration membrane technology, applied in water pollutants, filtration treatment, water/sewage treatment, etc., can solve the problems of electrode coating corrosion, affecting the life of evaporative crystallizer, pitting corrosion, etc.

Pending Publication Date: 2021-01-01
宝武水务科技有限公司
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Problems solved by technology

When the high-concentration fluorine-containing brine of coking wastewater enters electrodialysis treatment, calcium fluoride will be generated under the condition of low concentration of calcium and magnesium ions, resulting in scaling of the diaphragm. In addition, fluoride ions penetrate the membrane and enter the polar water, resulting in corrosion of the electrode coating , the life of the electrode is shortened
Secondly, the high-concentration fluorine-containing salt water enters the sodium chlorid

Method used

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  • Electric flocculation and tubular micro-filtration coupled high-concentration brine deep defluorination device

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Embodiment Construction

[0022] The specific implementation manner of the present invention will be described in more detail below with reference to schematic diagrams. The advantages and features of the present invention will be more apparent from the following description. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0023] Such as figure 1 As shown, this embodiment provides an electrocoagulation plus tubular microfiltration coupled high-concentration brine deep defluorination device for removing fluoride ions in high-concentration brine, including:

[0024] The electrocoagulation system includes a reaction cell 1 and an electrolytic assembly, the electrolytic assembly includes a periodic inverted DC power supply 2 and a plurality of positive electrode plates and a plurality of negative electrode plates located in the reaction...

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Abstract

The invention provides an electric flocculation and tubular micro-filtration coupled high-concentration brine deep defluorination device. The device comprises an electric flocculation system that comprises a reaction tank and an electrolytic assembly, wherein the electrolytic assembly comprises a periodic inverse DC power supply, a plurality of positive electrode plates and a plurality of negativeelectrode plates, the positive electrode plates and the negative electrode plates are arranged in the reaction tank, are arranged alternatively, and made of aluminum; a sedimentation assembly, whichcomprises a sedimentation tank, wherein the sedimentation tank is communicated with the reaction tank and receives the high-concentration brine in the reaction tank; and a tubular micro-filtration assembly, which comprises a circulating pump, a tubular micro-filtration membrane, a circulating water pipe and a water production pipe. The high-concentration brine flows out of the sedimentation tank and then enters the tubular micro-filtration membrane through the circulating pump, part of the high-concentration brine penetrates through the tubular micro-filtration membrane and then enters the water production pipe, and the rest of the high-concentration brine flows back into the reaction tank through the circulating water pipe. Through electric flocculation and tubular micro-filtration coupling, the fluorine removal rate of high-concentration brine is very high, and the problems of blockage and corrosion of effluent to subsequent electro-dialysis and evaporative crystallizers can be effectively avoided.

Description

technical field [0001] The invention relates to the technical field of high-concentration brine treatment, in particular to an electrocoagulation plus tube-type microfiltration coupling high-concentration brine deep defluorination device. Background technique [0002] The composition of coking wastewater is complex, with high content of organic matter, polycyclic aromatic hydrocarbons and macromolecules. Even after biochemical treatment, long-chain and persistent organic compounds in coking wastewater meet the discharge standards and may still pose a hazard to the environment. Conventional coking wastewater is first biochemically treated, and the biochemical effluent is then discharged or reused after advanced treatment. "Access Conditions for the Coking Industry (2008 Edition)" requires that phenol-cyanide wastewater must be recycled and must not be discharged. The domestic construction of the "zero discharge" project for phenol-cyanide wastewater has begun. The treatment ...

Claims

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Application Information

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IPC IPC(8): C02F9/06C02F101/14
CPCC02F1/001C02F1/444C02F1/463C02F9/00C02F2001/007C02F2101/14C02F2201/46105
Inventor 杨帆殷玫婕朱筱滢裘慕贤李树庭张利杰杨翠平
Owner 宝武水务科技有限公司
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