Ion desorption method of electric water purification equipment and electric water purification equipment

Abstract

The invention discloses an electric water purification apparatus ion desorption method. The method comprises the following steps: a controller controls the electrode of an electric water purification module to enter an ion desorption process in an electrode polarity exchange manner, and water entrance and water drainage of the electric water purification module are stopped; whether ion desorption reaches a full desorption degree or not is judged; and if the ion desorption reaches a full desorption degree, water entrance and water drainage of the electric water purification module are started to drain wastewater generated in the ion desorption process of the electric water purification module. The invention also discloses an electric water purification apparatus. The water entrance and water drainage of the electric water purification module are stopped after the controller controls the electrode of the electric water purification module to enter the ion desorption process in an electrode polarity exchange manner, and the water entrance and water drainage of the electric water purification module are started after the ion desorption reaches a full desorption degree in order to drain wastewater generated in the ion desorption process of the electric water purification module, so water flow in the electric water purification module stops in the ion desorption process to make the ion concentration of water in the electric water purification module increase in order to increase the current of the ion desorption process, thereby the ion desorption efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of electric water purification equipment, in particular to an ion desorption method of the electric water purification equipment and the electric water purification equipment. Background technique [0002] In the water purification process of electric water purification equipment, the electrode absorbs ions in the water to reduce the ion concentration of the effluent to achieve the purpose of water purification; when the electrode is saturated, it is necessary to desorb the ion to the electrode to facilitate Recycle the electrode for water purification. At present, the way to perform ion desorption is usually to perform electrode reversal under the condition of continuous water flow. However, during the ion desorption process, the continuous flow of the water flow will cause the desorbed ions to be taken away by the water flow, making the ion concentration in the electric water purification module low, whic...

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Problems solved by technology

However, during the ion desorption process, the continuous flow of the water flow will cause the desorbed ions to be taken away by the water flow, making the ion concentration in the electric water purification module low, which in turn makes the current low during ion desorption, resulting in ion The desorption speed is slow, and even causes incomplete desorption of ions on the electrode, which affects the capacity of adsorbed ions in the next cycle

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