Intelligent electrodialysis control system

Abstract

The invention provides an intelligent electrodialysis control system. The intelligent electrodialysis control system adopts the structure that an electroplate waste liquid storage tank is connected with a first electrical conductivity detector through a first water pump; the first electrical conductivity detector is connected to the waste water inlet of an electrodialytic device; a second electrical conductivity detector is connected to the waste water outlet of the electrodialytic device; a concentrated solution storage tank is connected to a third electrical conductivity detector through a second water pump; the third electrical conductivity detector is also connected to the concentrated solution inlet of the electrodialytic device; a fourth electrical conductivity detector is connected to the concentrated solution outlet of the electrodialytic device; electric conductivity probes and temperature sensors are respectively arranged in the first electrical conductivity detector, the second electrical conductivity detector, the third electrical conductivity detector and the fourth electrical conductivity detector; the electric conductivity probes, the temperature sensors, the first water pump and the second water pump are connected to a PC controller. The intelligent electrodialysis control system is high in dialysis separation rate, increase an effective usable area of a film set, and meanwhile, and is long in service life.

Description

【Technical field】 [0001] The invention relates to an intelligent electrodialysis control system. 【Background technique】 [0002] Common treatment methods for electroplating wastewater mainly include chemical precipitation, ferrite, ion exchange, and membrane separation. Electrodialysis is a membrane separation that uses different potentials to separate different ions in the solution through ion exchange. process. Electrodialysis equipment is a device used to concentrate, extract, and remove ions in water. Electrodialysis is mostly used for seawater desalination, extraction of precious metals in water, and an effective physical and chemical reaction for the separation of liquid Chinese medicinal components. Due to the difference in its composition and structure and the applied film, its application range is also different. The structure of the electrodialysis filter element is different according to the composition of the membrane, and its use is also different. At home a...

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Problems solved by technology

The operation process is relatively flexible, but the piping is complicated and the power consumption is large

Due to the influence of voltage, current and other factors, the electrode and membrane surface of the electrodialysis filter element is easy to adhere to a layer of solid salt or electroplating or metal. This adhesion layer directly affects the dialysis process, reducing the yield and increasing power consumption. In some special electrodialysis processes (recovery of metal salts from electroplating waste liquid), the amount of metal adhesion is too large, so people have to consider how to eliminate this layer of adhesion. Generally, regular maintenance of the membrane group can solve the problem. Effects of fouling and reactivation of the membrane

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