A Method for Removing Heavy Metal Contaminant Chromium in Water by Using Capacitive Deionization Technology

of the invention The invention belongs to the technical field of water pollution remediation, in particular relates to a method for removing heavy metal contaminant chromium in water by using capacitive deionization technology. lt includes the following steps: Clarifying the amount of 5 raw water and the presence of chromium ions; Regulating the pH of chrome-containing wastewater so that chromium ions are present in an ideal form for easy treatment; The chromium-containing wastewater enters the mobile electrode membrane capacitive deionization device through peristaltic pump. After charging, the two electrode plates will generate uniform electric field, and the target chromium ions will be enriched in this region. 10 The voltage is set higher than the electrolytic voltage of water, the adsorption and desorption processes are carried out at the same time, and the desorption of the electrode will enrich the chromium-containing ions in the mobile electrode slurry, so as to achieve the purpose of chromium removal. The method can break through the voltage limit well, and at the same time, the Faraday reaction and the electrolysis reaction are utilized to simplify the operation 15 steps of electrode regeneration, and realize the efficient removal of heavy metal contaminant chromium in water.