Magnetic field enhanced capacitive deionization continuous water purification device and method thereof

Abstract

The invention provides a magnetic field enhanced capacitive deionization continuous water purification device, which comprises isolation chambers which are arranged in a packaging shell and insulated from each other, wherein the isolation chambers are in rolling connection with a rotary driving roller, a packaging shell fixes and supports a wastewater injection pipe to inject water into the isolation chambers, a closed magnetic field along the side wall is arranged in the isolation chamber, the packaging shell is provided with a plurality of groups of sliding contact electrodes, an elastic isolation baffle is arranged on the bottom plate of the packaging shell, and the upper end of the elastic isolation baffle makes elastic contact with the outer edge of the isolation chamber. The method comprises the following steps: injecting wastewater into an isolation chamber of an electric field loading area for ion adsorption; discharging purified water subjected to electric field adsorption treatment through a guide groove; enabling an atomization flushing mechanism to flush ions on the desorption surface, wherein the flushing solution enters a sedimentation tank; and enabling the isolation chamber to continuously rotate to enter the electric field loading area, and repeatedly performing the steps to continuously purify and treat the industrial water. According to the invention, the device has the characteristics of low energy consumption, low cost, long service life, high efficiency, no pollution, environmental protection and energy conservation.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a continuous water purification method of magnetic field enhanced capacitive deionization (MECDI) for industrial water treatment. Background technique [0002] With the rapid development of my country's economy, water pollution, industrial water softening related to environmental protection, water-soluble radioactive waste, sewage from power plant circulating cooling systems, comprehensive wastewater from steel mills, papermaking wastewater, synthetic ammonia wastewater, cold rolling wastewater from steel mills and Water treatment technologies such as petrochemical refinery wastewater have received widespread attention because they involve the national economy and people's livelihood. At present, widely used water treatment technologies include ion exchange, reverse osmosis, and electrodialysis. However, these methods have limitations such as high ener...

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Problems solved by technology

[0005] In order to overcome the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a method for continuous water purification (MECDI) of magnetic field-enhanced capacitive deionization, which uses a wheel model or a waterwheel model to periodically load the electric field on the electrode plate to realize waste water purification. The adsorption process of positive and negative ions and the desorption process of adsorbed ions solve the problem of periodic replacement of electrodes in the existing CDI technology due to ion adsorption saturation on the electrode surface, ensuring the reliability of the continuous water treatment process; using the principle of magnetic field enhancement , using a closed magnetic field (magnetic field line) to constrain the ion movement space on the electrode surface, thereby realizing the effective adsorption of ions on the electrode surface, and solving the problems of high electrode cost and difficult desorption of adsorbed ions caused by the existing CDI technology relying on the high specific surface area of ​​the electrode

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