Electrochemical reduction assistance-based biosorption integrated reactor and treatment method of hexavalent chromium-containing wastewater
A technology of biological adsorption and hexavalent chromium, applied in electrochemical water/sewage treatment, chemical instruments and methods, adsorption water/sewage treatment, etc., can solve the problems of long adsorption equilibrium time, slow adsorption rate, and low adsorption efficiency , to achieve the effect of fast speed, simple operation and high selectivity
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[0033] Example 1.
[0034] See figure 1 , The integrated reactor based on electrochemical reduction-assisted biosorption treatment of wastewater containing hexavalent chromium includes: cathode 2, anode 3, modified brown algae biosorbent 4, proton exchange membrane 5, stirring paddle 6, stirring motor 7 and DC power supply 8.
[0035] The proton exchange membrane 5 separates the container as the main body 1 of the integrated reactor into two parts: a cathode chamber and an anode chamber, wherein the cathode 2 and the stirring motor are arranged in the cathode chamber. The stirring paddle 6 connected to 7 phases is provided with the anode 3 in the anode chamber; the cathode 2 and the anode 3 are respectively connected to the DC power supply 8 outside the container through wires Phase connection.
[0036] A water outlet 10 equipped with a valve is provided on the container wall at the lower part of the cathode chamber, and a water inlet 9 equipped with a valve is provided on the con...
Example Embodiment
[0042] Example 2.
[0043] The integrated reactor for treating wastewater containing hexavalent chromium based on the electrochemical reduction assisted biosorption of Example 1 was used.
[0044] The modified brown algae biosorbent is modified Sargassum, and the modification method is: drying the Sargassum, grinding and sieving, and then sieving the algae with a particle size of 500-800 μm. The pellets are immersed in an aqueous formaldehyde solution with a mass concentration of 5g / L, the immersion time is 10 hours, and the solid-to-liquid ratio is 15g sargassum pellets / 1L of water.
[0045] The surface pretreatment method of the titanium (Ti) plate substrate is the same as that of Example 1. The pretreated titanium (Ti) plate substrate is immersed in a metal gold plating solution for electrodeposition reaction. The preparation of the metal gold plating solution is to dissolve a metered gold soluble precursor compound in a hydrochloric acid solution, and the preparation concentrati...
Example Embodiment
[0048] Example 3.
[0049] The integrated reactor for treating wastewater containing hexavalent chromium based on the electrochemical reduction assisted biosorption of Example 1 was used.
[0050] The modified brown algae biosorbent is modified Fucales, and the modification method is: drying the fucus, grinding and sieving, and then sieving the particle size to be 500-800 μm The algae pellets are immersed in an aqueous formaldehyde solution with a mass concentration of 1g / L, the immersion time is 40 hours, and the solid-liquid ratio is 5g fucus pellets / 1L water.
[0051] The surface pretreatment method of the titanium (Ti) plate substrate is the same as that in Example 1. The pretreated titanium (Ti) plate substrate is immersed in a ruthenium metal plating solution for electrodeposition reaction. The preparation of the ruthenium metal plating solution is to dissolve a metered amount of the soluble precursor compound of ruthenium metal in a hydrochloric acid solution to a concentrati...
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